WO2017071651A1 - 一种用于扫描系统的准直器 - Google Patents

一种用于扫描系统的准直器 Download PDF

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Publication number
WO2017071651A1
WO2017071651A1 PCT/CN2016/103800 CN2016103800W WO2017071651A1 WO 2017071651 A1 WO2017071651 A1 WO 2017071651A1 CN 2016103800 W CN2016103800 W CN 2016103800W WO 2017071651 A1 WO2017071651 A1 WO 2017071651A1
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WO
WIPO (PCT)
Prior art keywords
slicing
filter
assembly
collimator
filters
Prior art date
Application number
PCT/CN2016/103800
Other languages
English (en)
French (fr)
Inventor
陈广辉
徐甜
叶婷
姜怀芳
Original Assignee
上海联影医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201520858351.6U external-priority patent/CN205181365U/zh
Priority claimed from CN201521103639.9U external-priority patent/CN205433722U/zh
Priority claimed from CN201521103625.7U external-priority patent/CN205514648U/zh
Application filed by 上海联影医疗科技有限公司 filed Critical 上海联影医疗科技有限公司
Priority to EP16859086.7A priority Critical patent/EP3369380B1/en
Priority to US15/772,068 priority patent/US10799190B2/en
Publication of WO2017071651A1 publication Critical patent/WO2017071651A1/zh
Priority to US17/067,936 priority patent/US11457879B2/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/027—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/06—Diaphragms
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers

Definitions

  • the present application relates to a scanning instrument, and more particularly to a collimator for a CT (Computed Tomography) scanning system.
  • CT Computer Planar Tomography
  • X-ray computed tomography is a technique for reconstructing three-dimensional medical images using digital geometry processing.
  • the technology illuminates the human body through a single axial X-ray rotation. Because different tissues have different X-ray absorption abilities (or radiance), the three-dimensional technique of the computer can be used to reconstruct the tomographic image.
  • CT scanning systems usually consist of three components: an X-ray emitter, a detector, and a rack.
  • the collimator is an important component of the CT scanning system. It is usually placed on the frame between the X-ray emitting device and the patient to block part of the X-rays.
  • the collimator can have one or more openings, and by controlling the size of its opening, the range of illumination of the X-rays can be controlled to avoid the patient receiving unnecessary X-ray radiation and reducing the radiation dose.
  • Another function is to control the slice thickness of the part to be scanned to meet the requirements of imaging conditions, and the rationality of its structural design directly affects the quality of imaging of the CT scanning system.
  • the existing collimator has a complicated structure and is not easy to disassemble, which brings inconvenience to daily maintenance work. In view of the above problems, the present application proposes a feasible optimized design scheme for the structure of the straightener.
  • the collimator provided by the present application structurally optimizes and changes various functional components of the collimator in the prior art, so that the ray blocking protection function, the filtering function and the beam fan width adjustment function can be Implemented by separate components.
  • the components do not have structural crossovers and mutual interference when combined with each other, thereby reducing the complexity of the collimator system.
  • the replacement of the same module can be realized by simple disassembly, which facilitates the daily maintenance work of the maintenance engineer.
  • the present application provides a collimator that can include a slicing assembly, a filter assembly, and a support and guard assembly.
  • the slicing assembly and the filter assembly can be detachably coupled to the support and guard assembly. After the radiation is incident on the collimator, it passes through a slicing assembly and a filter assembly, which can be used to adjust the beam width of the radiation incident into the collimator, and the filter assembly can be used to pass the radiation through different filters to Perform different types of scanning work.
  • the slicing assembly can include a slicing assembly, a transmission, and a support device.
  • the two slice plates comprise two slice plates.
  • the two slicing plates and the transmission can be placed on the support device after assembly.
  • An opening can be formed between the two slicing plates, and the transmission can control the two slicing plates to move to change the size of the opening.
  • the support device may be a plate-shaped hollow structure, wherein the hollow portion may be disposed corresponding to the opening.
  • the slicing assembly can include a drum that is rotatable about its axis, and the sides of the drum can be provided with through holes for radiation to pass through.
  • the slicing assembly can include a sliced plate having an opening disposed outside of the drum through which the radiation passes, through which the through hole can be ejected from the opposite side.
  • the shape of the opening can be elongated, rectangular or elliptical.
  • the dicing plate may be a flat plate structure, and the extending direction of the through hole may be perpendicular to a plane in which the dicing plate is located.
  • the slicing assembly can include a plurality of slicing plates having openings and a rotating drum that can be provided with a plurality of through holes that do not coincide with each other.
  • the drum may be a polygonal cylinder having a side surface having a plurality of opposing planes, wherein the opposite two planes are a plane group, the number of through holes and the number of slice plates and the number of plane groups
  • each of the slice plates may be respectively disposed on any one of two planes of each plane group, and each of the through holes may respectively communicate with two planes in each plane group.
  • the filter assembly can include a filter replacement assembly and a filter floating base, wherein the filter replacement assembly is removably disposed on the filter floating base.
  • the filter replacement assembly can include a filter holder, a filter retaining plate, and one or more first filters, wherein the one or more first filters can be disposed through the filter retaining plate On the filter holder.
  • the filter float base can include a guide optical axis, a linear bearing, a base, and one or more second filters.
  • the linear bearing and the one or more second filters may be disposed on the base, and the guiding optical axis may be disposed in the linear bearing, wherein the guiding optical axis may rotate and drive the axial movement of the base along the guiding optical axis.
  • the number and type of one or more first filters and one or more second filters are the same and the positions are in one-to-one correspondence.
  • the one or more first filters and the one or more second filters can be butterfly filters or flat filters.
  • one or more of the first filter and the one or more second filters may be disposed in sequence along the axial direction of the guiding optical axis.
  • the support and guard assembly can be a box structure having an upper opening and a side opening
  • the filter assembly can be disposed in the box structure from the side opening
  • the slicing assembly can be The opening is covered on the box structure.
  • FIG. 1 is a schematic diagram of an example system configuration of a scanning system shown in accordance with some embodiments of the present application;
  • FIG. 2 is a schematic diagram of an example system configuration of a control and processing system shown in accordance with some embodiments of the present application;
  • FIG. 3 is a schematic diagram of a control and processing system shown in accordance with some embodiments of the present application.
  • FIG. 4 is an exemplary flow of an example scanning system shown in accordance with some embodiments of the present application.
  • FIG. 5 is a schematic diagram of components of an example collimator shown in accordance with some embodiments of the present application.
  • FIG. 6 is a schematic diagram of components of an example filter assembly shown in accordance with some embodiments of the present application.
  • FIG. 7 is a component schematic diagram of an example slicing assembly, shown in accordance with some embodiments of the present application.
  • FIG. 8 is a component schematic diagram of an example slicing assembly, shown in accordance with some embodiments of the present application.
  • FIG. 9 is an exemplary flow diagram of an example collimator adjustment shown in accordance with some embodiments of the present application.
  • Figure 10a is a block diagram showing an example collimator shown in accordance with some embodiments of the present application.
  • Figure 10b is a schematic exploded view of an example collimator shown in accordance with some embodiments of the present application.
  • Figure 11a is a schematic illustration of the structure of an example filter assembly, in accordance with some embodiments of the present application.
  • Figure 11b is a schematic exploded view of an exemplary filter assembly shown in accordance with some embodiments of the present application.
  • Figure 12a is a block diagram showing an exemplary slicing assembly in accordance with some embodiments of the present application.
  • Figure 12b is a bottom plan view of an exemplary slicing assembly, shown in accordance with some embodiments of the present application.
  • Figure 13a is a block diagram showing an exemplary slicing assembly in accordance with some embodiments of the present application.
  • Figure 13b is a schematic illustration of the structure of an example drum shown in accordance with some embodiments of the present application.
  • Figure 13c is a schematic illustration of the structure of an exemplary sliced panel, in accordance with some embodiments of the present application.
  • Figure 13d is a schematic cross-sectional view of an exemplary slicing system shown in accordance with some embodiments of the present application when a ray is incident.
  • the present application relates to a scanning system, and further to a medical scanning system.
  • the system can include a launch device, a collimator, a detector, a test bed, an image reconstruction system, and the like.
  • the collimator may include a slicing component, a filter component, a support and a guard component, and the like.
  • the slicing assembly can include two slicing plates that are spaced apart to form an opening.
  • the slicing assembly can include a drum.
  • the slicing assembly can further include one or more slicing plates having openings, wherein the one or more slicing plates are disposed on a side surface of the drum.
  • Scanning system 100 can include a gantry 110, a launching device 120, a collimator 130, a test bed 140, a detector 150, and a control and processing system 160.
  • Rack 110 can be used to support one or more components in scanning system 100.
  • a scanning cavity may be opened in the middle of the frame 110.
  • the scanning cavity can be circular.
  • the transmitting device 120 can be used to emit radiation or signals, which can include X-rays, gamma rays, and the like.
  • a collimator 130 can be used to collimate the rays, which can include adjusting the width and direction of the fan beam of the rays.
  • the test bed 140 can be used to place a test object, which can include a person or an object.
  • the detector 150 can be used to receive radiation after passing through the detection object.
  • the detector 150 can be disposed in the rack 110 opposite to the launching device 120.
  • Control and processing system 160 can be used to control launcher 120, collimator 130, and test bed 140 (e.g., the location and operational status of such components, etc.). Further, control and processing system 160 can generate and display a medical image.
  • the patient may be pushed into the scanning cavity along the Z-axis direction on the test bed 140 while the examination is being performed.
  • the Z-axis direction may be a direction in which the detection bed 140 moves.
  • the transmitting device 120 is rotatable about the Z-axis direction and emits X-rays.
  • the detector 150 is disposed opposite the launching device 120 and can be rotated synchronously together. During the rotation, the detector 150 can simultaneously acquire scan data, which may be data after the X-ray passes through the human body.
  • the detector 150 can transmit the collected data to the control and processing system 160. Further, The control and processing system 160 can reconstruct a medical image of a patient using the collected data.
  • scanning system 100 can perform a helical scan. For example, during a scan, the patient can move in the scanning cavity along the Z-axis direction while the firing device 120 can be rotated about the Z-axis such that the firing device 120 can produce a helical motion trajectory relative to the patient.
  • the detector 150 can transmit the acquired helically scanned data to the control and processing system 160 for reconstruction and obtain a wider medical image image in the Z-axis direction.
  • the control and processing system 160 can include a data bus 210, a processor 220, a read only memory (ROM) 230, a random access memory (RAM) 240, a communication port 250, and an input/output port. 260, a hard disk 270 and a display 280 connected to the input/output port 260.
  • the manner of connection between the various hardware within the control and processing system 160 can be wired, wireless, or a combination of both. Any piece of hardware can be local, remote, or a combination of both.
  • Data bus 210 can be used to transmit data information.
  • data can be transferred between the various hardware within the control and processing system 160 via the data bus 210.
  • processor 220 can transmit data over the data bus 210 to other hardware, such as memory or input/output port 260.
  • data may be real data, or may be instruction code, status information or control information.
  • data bus 210 can be an industry standard (ISA) bus, an extended industry standard (EISA) bus, a video electronics standard (VESA) bus, an external component interconnect standard (PCI) bus, and the like.
  • ISA industry standard
  • EISA extended industry standard
  • VESA video electronics standard
  • PCI external component interconnect standard
  • Processor 220 can be used for logic operations, data processing, and instruction generation.
  • the processor 220 can obtain data/instructions from an internal memory, which can include read only memory (ROM), random access memory (RAM), cache (Cache) (not shown in the figure) Out) and so on.
  • processor 220 can include multiple sub-processors that can be used to implement different functions of the system.
  • the read only memory 230 is used to control and process the initialization of each functional module in the power-on self-test, control and processing system 160 of the system 160, the driver of the basic input/output of the system 160, and the like.
  • the read only memory can include a programmable read only memory (PROM), an programmable erasable read only memory (EPROM), a one time programmable read only memory (OPTROM), and the like.
  • the random access memory 240 is used to store an operating system, various applications, data, and the like.
  • random access memory 240 can include static random access memory (SRAM), dynamic random access memory (DRAM), and the like.
  • Communication port 250 is used to connect the operating system to the external network. Now communication between them.
  • communication port 250 can include an FTP port, an HTTP port, or a DNS port, and the like.
  • the input/output port 260 is used for data, information exchange, and control between an external device or circuit and the processor 210.
  • input/output port 260 can include an AT port, a PCI port, an IDE port, and the like.
  • Hard disk 270 is used to store information and data generated by system 160 or received from outside system 160.
  • the hard disk 270 may include a mechanical hard disk (HDD), a solid state hard disk (SSD), or a hybrid hard disk (HHD).
  • Display 280 is used to present information and data generated by system 160 to the user.
  • display 280 can include a physical display such as a display with speakers, an LCD display, an LED display, an OLED display, an electronic ink display (E-Ink), and the like.
  • the control and processing system 160 can include a processing module 310, a slice control module 320, a test bed control module 330, a data acquisition module 340, an image reconstruction module 350, a display module 360, and a storage module 370.
  • the manner of connection between modules within the control and processing system 160 can be wired, wireless, or a combination of both. Any module can be local, remote, or a combination of both.
  • “module”, “sub-module”, “unit”, “sub-unit” refer to logic or a set of software instructions stored in hardware, firmware.
  • the "module”, “sub-module”, “unit”, “sub-unit” referred to herein can be executed by software and/or hardware modules, or can be stored in any computer-readable non-transitory medium or other storage device.
  • a software module can be compiled and linked into an executable program.
  • the software modules here can respond to information conveyed by themselves or other modules and/or can respond when certain events or interruptions are detected.
  • a software module arranged to perform operations on a computing device e.g., processor 220
  • a tangible medium of the kind; a software module can also be obtained through a digital download mode (the digital download here also includes data stored in a compressed package or an installation package, which needs to be decompressed or decoded before execution).
  • the software code herein may be stored, in part or in whole, in a storage device of a computing device that performs the operations and applied to the operation of the computing device.
  • Software instructions can be embedded in firmware, such as Erasable Programmable Read Only Memory (EPROM).
  • a hardware module can include logic elements that are connected together, such as a gate, a flip-flop, and/or include a programmable unit, such as a programmable gate array or processor.
  • modules or computing devices described herein are preferably implemented as software modules Implemented, but can also be represented in hardware or firmware.
  • the modules mentioned here are logical modules and are not limited by their specific physical form or memory.
  • a module can be combined with other modules or separated into a series of sub-modules.
  • the processing module 310 can be used for numerical calculations, logic processing, instruction generation, etc., the functions of which can be implemented by the processor 220 of FIG.
  • processing module 310 can obtain data or information from data collection module 340 or storage module 370. Further, the processing module 310 may perform numerical calculation and/or logic processing on the data or information and send it to the slice control module 320, the detection bed control module 330, the display module 360, or the storage module 370. In some embodiments, the processing module 310 can perform numerical calculation on the external data acquired by the data acquisition module 340 to obtain a required target parameter.
  • the processing module 310 can obtain the intensity of the X-rays passing through the measured object at different times, different angles, and different positions according to the scan data collected by the detector 150, thereby further calculating the corresponding portion of the measured object.
  • processing module 310 can logically determine and make decisions about the acquired data and information and generate an executable instruction.
  • the processing module 310 can obtain target location information for the test bed from the data acquisition module 340 and/or the storage module 370. Further, the processing module 310 can detect the current location of the test bed 140 and compare it with the target location of the test bed.
  • the processing module 310 can generate a test bed movement command and control the test bed 140 to move to the target position by the test bed control module 330. After the test bed 140 is moved to the target position, the processing module 310 can generate a test bed movement stop command. In some embodiments, processing module 310 can generate a launch device enable command.
  • the transmitting device 120 can be turned on according to the transmitting device activation command.
  • the launching device opening command may include a preset opening time of the transmitting device 120. Further, the processing module 310 can calculate the time when the transmitting device 120 is turned on and compare with the preset opening time.
  • the processing module 310 may issue a transmitting device shutdown command, and the transmitting device 120 may be turned off according to the transmitting device shutdown command.
  • the processing module 310 can passively receive data or information, and can also actively acquire data or information through the data collection module 340 according to the needs of the user or other modules.
  • the slice control module 320 can be used to execute a slice control instruction generated by the processing module 310 or input by a user, and the function can be implemented by the processor 220 in FIG. Wherein the slice control instruction A slice position adjustment command, an opening size adjustment instruction, or an angle adjustment instruction may be included.
  • the slice position adjustment command can be used to adjust the position of the slice assembly
  • the opening size adjustment instruction can be used to adjust the opening size of the slice assembly
  • the angle adjustment instruction can be used to adjust the rotation angle of the slice assembly.
  • the slice control module 320 may acquire a slice position adjustment instruction issued by the processing module 310 or input by a user, and the slice position adjustment instruction may include slice target position information.
  • the slice control module 320 may control the slice component or one or more components thereof to move to a corresponding target location according to the slice target location information.
  • the slice control module 320 may acquire the opening size adjustment instruction or the angle adjustment instruction issued by the processing module 310 or input by the user, and may perform corresponding adjustment on the slice component or the components therein according to the instruction.
  • the detection bed control module 330 can be used to execute the detection bed control instructions generated by the processing module 310 or input by the user, the functions of which can be implemented by the processor 220 of FIG.
  • the detection bed control instruction may include a detection bed position adjustment instruction and a detection bed movement speed adjustment instruction.
  • the test bed position adjustment command can be used to adjust the position of the test bed in the Z-axis direction.
  • the detection bed moving speed adjustment command can be used to adjust the moving speed of the detecting bed when moving in the Z-axis direction.
  • the detection bed position adjustment command may include detecting target position information of the bed, and the detection bed movement speed adjustment instruction may include preset movement speed information of the detection bed.
  • the detection bed control module 330 may acquire the detection bed position adjustment instruction issued by the processing module 310 or input by a user, and control the detection bed 140 according to the target position information in the detection bed position adjustment instruction. Move to the target position in the Z-axis direction. In some embodiments, the detection bed control module 330 may acquire the detection bed movement speed adjustment instruction issued by the processing module 310 or input by a user, and adjust the movement of the detection bed preset in the instruction bed movement speed adjustment instruction. The speed information controls the detection bed 140 to move in the Z-axis direction or to adjust the moving speed.
  • the data collection module 340 can be used to acquire external data or receive information input by a user, and its function can be implemented by the processor 220 in FIG. In some embodiments, the data collection module 340 can send the acquired data or information to the processing module 310 for processing. In some embodiments, the data collection module 340 can transmit the acquired data or information to the slice control module 320 or the test bed control module 330, and the slice control module 320 or the test bed control module 330 can be based on the data or information. Control the corresponding module or device. In some embodiments, the data collection module 340 can send the acquired data or information to the storage module 370 for storage. In some embodiments, data collection Module 340 can receive a data acquisition instruction from processing module 310 and complete the corresponding data acquisition operation.
  • the data collection module 340 can acquire external data and communicate the external data to the processing module 310 for calculation of the corresponding target parameter.
  • the data acquisition module 340 can acquire the scan data collected by the probe 150 and send the data to the processing module 310 for further calculation and processing.
  • the data collection module 340 can pre-process the collected data after acquiring the data.
  • the image reconstruction module 350 can be used to construct a medical image, the functionality of which can be implemented by the processor 220 of FIG.
  • image reconstruction module 350 can retrieve data or information from processing module 310 or storage module 370 and construct the medical image from the data or information.
  • the medical image may be a human body three-dimensional medical image.
  • image reconstruction module 350 can retrieve data from processing module 310 or storage module 370, which can include scan data at different times, different locations, and different angles.
  • the image reconstruction module 350 can calculate the characteristics or state of the corresponding part of the human body, such as the absorption capacity of the corresponding part of the human body, the density of the tissue corresponding to the human body, and the like, thereby constructing the three-dimensional medical image of the human body. Further, the human body three-dimensional medical image may be displayed by the display module 360 or stored by the storage module 370.
  • Display module 360 can be used to display data or information, the functionality of which can be implemented by display 280 in FIG.
  • the display module 360 can present the human body three-dimensional medical image generated by the image reconstruction module 350.
  • display module 360 can present relevant data and instruction information generated by processing module 310.
  • the display module 360 can directly present the information acquired by the data acquisition module 340, which may include, but is not limited to, measurement data information of the probe 150, operational status information of the scanning system 100, or generated by the processing module 310. Instruction information, etc.
  • the information presented by display module 360 can include, but is not limited to, light, text, sound, images, and the like.
  • display module 360 can include a physical display such as a display with speakers, an LCD display, an LED display, an OLED display, an electronic ink display (E-Ink), and the like.
  • display module 360 can receive a feedback message and can send the feedback information to processing module 310. Further, the processing module 310 can generate a corresponding control instruction according to the feedback information. For example, the display module 360 can display the message "Detecting the bed in place, whether to enable the transmitting device?", and receiving feedback information from the user, for example, "confirm open” Afterwards, the processing module 310 can generate an instruction to enable the corresponding device and turn on the corresponding device.
  • the storage module 370 can be used to store information or data, and its function can be implemented by a combination of one or more of the hard disk 270, the read only memory 230, and the random access memory 240 in FIG.
  • the storage module 370 can store information of other modules in the control and processing system 160 or modules or devices outside of the control and processing system 160.
  • storage module 370 can send the stored information to processing module 310 for processing.
  • storage module 370 can store information generated by processing module 310.
  • the information stored by the storage module 370 may include scan information of the probe 150, control commands or parameter information input by the user, intermediate data generated by the processing module 310, or complete data information, and the like.
  • the storage module 370 can include, but is not limited to, various types of storage devices such as solid state drives, mechanical hard disks, USB flash drives, SD memory cards, optical disks, random access memory (RAM), and read only memory (ROM).
  • the storage module 370 may be a storage device internal to the system, or may be a storage device external to or external to the system, such as a storage on a cloud storage server.
  • Step 402 can include obtaining target information.
  • the target information may be acquired by the data acquisition module 340 or obtained by user input.
  • the target information collected by the data collection module 340 may include detection bed location information, system working state information, system parameter information, and the like.
  • the target information input by the user may include parameter setting information, control information, and the like.
  • Step 404 can include generating a corresponding control instruction based on the target information obtained in step 402.
  • the control instruction may include a slice control instruction, a detection bed control instruction, a transmitting device open instruction, and the like, wherein the slice control instruction may include a slice position adjustment instruction or an angle adjustment instruction (the slice control instruction, the detection bed control instruction, A detailed description of the transmitter control commands can be found in Figure 3 and the corresponding description).
  • Step 406 can include performing one or more control operations in accordance with the control instructions generated in step 404.
  • the test bed control module 330 can obtain the test bed position adjustment command generated in step 404 and adjust the position of the test bed.
  • the slice control module 320 can obtain the slice position adjustment instructions generated in step 404 and adjust the position of the slice component.
  • the slice control module 320 can obtain the step 404 The raw angle adjustment command controls the rotation of the drum in the slicing assembly according to the angle adjustment command.
  • the transmitting device 120 can acquire the transmitting device opening command generated in step 404 and activate the corresponding device.
  • transmitting device 120 may acquire a transmitting device open command at 404 and/or step 406 and initiate a corresponding detection (eg, in step 408).
  • the detector 150 may collect target data and send the collected target data to the processing module 310 for processing.
  • the data may include scan data at different times, different locations, and different angles.
  • the target data may be subjected to computation processing by the processing module 310, and a medical image may be further generated by the image reconstruction module 350.
  • display module 360 can receive the medical image generated in step 412 and further present.
  • FIG. 5 is a schematic illustration of components of an example collimator shown in accordance with some embodiments of the present application.
  • the collimator 500 can be disposed between the test bed 150 and the launching device 120.
  • Collimator 500 can include a support and guard assembly 510, a filter assembly 520, and a slicing assembly 530.
  • the support and guard assembly 510 can be used to provide overall structural support to the collimator 500 and provide partial protection.
  • the filter assembly 520 can be used to filter the rays passing through the collimator 500 to reduce the intensity of the radiation to reduce harm to the human body. Further, filter assembly 520 can include one or more filters, which can have different filtration parameters.
  • the slicing assembly 530 can be used to adjust the fan beam width of the rays passing through the collimator 500.
  • the launch device 120 can generate radiation that can pass through the slicing assembly 530 and the filter assembly 520 in sequence.
  • the slicing assembly 530 can adjust the fan beam width of the ray, and the filter assembly 520 can adjust the intensity of the ray.
  • the support and guard assembly 510 can be a box structure having an upper opening and a side opening.
  • the filter assembly 520 can be disposed in the support and guard assembly 510 from a side opening, and the slicing assembly 530 can be capped from the upper opening on the support and guard assembly 510.
  • the filter assembly 600 can include a filter replacement assembly 601 and a filter floating base 602 (see Figure 11 and corresponding description for an exemplary structural view of the filter assembly 600).
  • the filter replacement assembly 601 can be detachably coupled to the filter float base 602.
  • the filter replacement assembly 601 can include one or more first filters 610, a filter retaining plate 620, and a filter holder 630.
  • the one or more first filters 610 may be fixedly connected to the filter fixing plate 620 through the filter bracket 630.
  • the one or more first filters 610 can be disposed side by side in the direction in which the filter float base 602 moves. Further, the one or more first filters 610 can include a variety of filters having different parameters, such as body filters, head filters, baby filters, and the like.
  • the body filter may have a lower filtering capacity so that a higher ray intensity can be maintained, and a high quality image can be obtained in a region where the body or multiple organs overlap.
  • the first filter of the head may have a higher filtering capability, and the brain can be better protected during the detection process.
  • the infant filter may have the highest filtration capacity of these filter types, and damage to the tissue or organs of the baby may be minimized during the detection process.
  • the first filter 610 can include a butterfly filter, a flat plate filter, or a combination of both types of filters.
  • the filter float base 602 can include one or more second filters 640, a guide optical axis 650, a linear bearing 660, and a base 670.
  • the linear bearing 660 and the second filter 640 can be fixedly disposed on the base 670.
  • the guiding optical axis 650 may be disposed in the linear bearing 660.
  • the guiding optical axis 650 can be rotated and can be moved by its own rotation to move the base 670 along the axial direction of the guiding optical axis 650.
  • the one or more second filters 640 can be disposed side by side along the axial direction of the guiding optical axis 650.
  • the one or more second filters 640 can include a variety of filters having different parameters, such as body filters, head filters, baby filters, and the like.
  • the second filter 640 can include a butterfly filter, a flat plate filter, or a combination of both types of filters.
  • the number of first filters 640 in the filter float base 602 and the first filter 610 in the filter change assembly 601 are the same and the type and position correspond one-to-one.
  • the radiation generated by the transmitting device 120 may pass through the first filter 610 and its corresponding second filter 640 after entering the collimator 130.
  • the filter floating base 602 may include a focus measuring plate, which may be fixedly disposed on the base 670.
  • the focus measurement board can measure the size of the focus when the scanning system 100 performs image correction, thereby improving the measurement accuracy of the scanning system 100.
  • the slicing assembly 700 can correspond to the slicing assembly 530 shown in FIG. As shown in FIG. 7, the slicing assembly 700 can include a slicing plate assembly 710, a transmission 720, and a support device 730. (See Figure 12a and the corresponding description for a schematic diagram of the structure of the slicing assembly 700).
  • the slicing plate assembly 710 and the transmission 720 can be assembled and disposed on the support device 730.
  • the slice plate assembly 710 can include a first slice plate 710-1 and a second slice plate 710-2, wherein the first slice plate 710-1 and the second slice plate 710 The interval between -2 forms an opening.
  • the launch device 120 can generate a ray that can pass through the opening while passing through the dicing plate assembly 710 while being blocked or absorbed at other portions. Further, the width of the fan beam after the radiation passes through the opening may be related to the size of the opening.
  • the transmission 720 can adjust the size of the opening by controlling the movement of the slices 710-1 and 710-2 to adjust the fan beam width of the ray.
  • Slice assembly 800 can correspond to slice assembly 530 shown in FIG.
  • the slicing assembly 800 can include a drum 810, one or more slicing plates 820, a transmission 830, and a support device 840. (See Figure 13 and the corresponding description for a schematic diagram of the structure of the slicing assembly 800).
  • the slicing plate 820 can be disposed on a side surface of the drum 810, and the drum 810 and the transmission 830 can be assembled and disposed on the support device 840.
  • the one or more slice plates 820 can each include one or more openings.
  • the shape and size of the openings may be different.
  • the launch device 120 can generate a ray that can pass through the one or more openings as it passes through the one or more slice plates 820, while being blocked or absorbed at other portions.
  • different slice plates 820 can be selected by varying the angle of the drum 810 to effect adjustment or modification of the fan beam size and position of the rays.
  • Step 902 can include obtaining a control instruction that can be issued by processing module 310.
  • the control instructions may include a slice position adjustment instruction, an opening size adjustment instruction, an angle adjustment instruction, and/or a filter selection instruction, and the like.
  • the slice position adjustment command can be used to adjust the position of the slicing component 530.
  • the opening size adjustment command can be used to adjust the size of the opening between the slice (eg, the first slicer plate 1225-2 and the second slicer plate 1230-2 shown in FIG. 12).
  • the angle adjustment command can be used to adjust the rotation of the drum 810 angle.
  • the filter selection instructions can be used to select the type of first filter 610 and/or second filter 640 in filter component 520. Wherein, the filter type may include a body filter, a head filter, an infant filter, and the like.
  • Step 904 can include adjusting the devices or components in filter component 520 and/or slicing component 530 in accordance with the control instructions obtained in step 902.
  • step 904 can include adjusting the slicing plate assembly 710 by the transmission 720 to determine the width of the opening between the slicing plate 710-1 and the slicing plate 710-2.
  • step 904 can also include adjusting the angle of rotation of the bowl 810 by the rotating device 830 to select the slicing plate 820 having the desired opening width.
  • Step 904 can also include selecting a type of first filter 610 and/or second filter 640 by rotating the guide optical axis 650, which can include a body filter, a head filter, a baby filter, etc. .
  • step 906 After completing the adjustment operation described in step 904, an adjustment completion signal can be generated in step 906, which can be sent to the processing module 310.
  • a transmitting device open command may be generated and transmitted to the transmitting device 120.
  • the detecting After the transmitting device 120 receives the transmitting device open command, the detecting may be started in step 908.
  • step 908 can correspond to step 308.
  • FIG. 10a is a block diagram of an example collimator shown in accordance with some embodiments of the present application.
  • Collimator 1000 (corresponding to collimator 130) can be used to filter, block, and adjust the beam width of the radiation emitted by transmitting device 120 in scanning system 100.
  • Collimator 1000 can include a slicing assembly 1010, a support and guard assembly 1020, and a filter assembly 1030 (corresponding to slicing assembly 530, support and guard assembly 510, filter assembly 520, respectively, in FIG. 5).
  • the filter assembly 1030 and the slicing assembly 1010 are detachably coupled to the support and guard assembly 1020.
  • the ray may be passed through the slice assembly 1010 and the filter assembly 1030 after being incident on the collimator 1000, wherein the slice assembly 1010 may adjust the fan beam width of the ray, and the filter assembly 1030
  • the radiation may be subjected to one or more types of filtering by different filters it includes. Further, the adjustment and filtering operation of the fan beam width can satisfy the scanning requirements of different scanning objects.
  • Figure 10b is a schematic exploded view of an example collimator shown in accordance with some embodiments of the present application.
  • the slicing assembly 1010, the support and guard assembly 1020, and the filter assembly 1030 of the collimator 1000 can be removably coupled to one another.
  • the support and guard assembly 1020 can be a box structure having an upper opening and a side opening.
  • the filter assembly 1030 can be mounted in the box structure from the side opening or upper opening.
  • the filter assembly 1030 can be removably mounted in the box structure from a side opening of the box structure, and the slicing assembly 1010 can be disposed from an opening in the box structure.
  • the box body is structurally closed and closes the upper opening of the box structure.
  • the slicing assembly 1010, the support and protection assembly 1020 and the filter assembly 1030 shown in FIG. 10b the components can be prevented from interfering with each other in structure, and can also be protected by the filter assembly 1030 and the slicing assembly 1010.
  • the plate assists in blocking the radiation and enhances the barrier protection of the support and guard assembly 1020.
  • the slicing assembly 1010 can include two parallelly disposed slicing plates 1040 and 1050, a transmission 1060, and a support device 1070 (the slicing plates 1040 and 1050, the transmission 1060, and the support device 1070 are specifically The structure can be seen in Figure 12a and the corresponding description).
  • FIG 11a is a block diagram showing an example filter assembly shown in accordance with some embodiments of the present application.
  • Filter assembly 1030 can correspond to filter assembly 600 in FIG.
  • the filter assembly 1030 can include a filter replacement assembly 1105 and a filter slide base 1110.
  • the filter replacement assembly 1105 is detachably coupled to the filter floating mount 1110.
  • the filter floating base 1110 can be pullably disposed on one side of the support and guard assembly 1030.
  • different filtration requirements can be achieved by simply withdrawing the filter floating base 1110, replacing the filter replacement assembly 1105 in its entirety, or replacing the first filter 1145 therein.
  • Figure 11b is a structural exploded view of an example filter assembly shown in accordance with some embodiments of the present application.
  • the filter replacement assembly 1105 of the filter assembly 1030 and the filter float base 1110 are detachably coupled.
  • the filter replacement assembly 1105 can include one or more first filters 1145, a filter retaining plate 1150 and a filter holder 1140.
  • the first filter 1145 can be fixedly coupled to the filter fixing plate 1150 by the filter holder 1140.
  • the one or more first filters 1145 can be placed side by side in the direction in which the filter float base 1110 moves.
  • the one or more first filters 1145 can include a variety of filters having different parameters, such as a body filter, a head filter, an infant filter, and the like.
  • the first filter 1145 can include a butterfly filter, a flat plate filter, or a combination of the two types of filters.
  • the filter floating base 1110 can include one or more second filters 1135, a guiding optical axis 1115, a linear bearing 1120, and a base 1125. Further, the linear axis The bearing 1120 and the second filter 1135 can be fixedly disposed on the base 1125.
  • the guiding optical axis 1115 can be disposed in the linear bearing 1120. In some embodiments, the guiding optical axis 1115 can be rotated and can move the base 1125 in its axial direction by its own rotation. In some embodiments, the one or more second filters 1135 may be disposed side by side along the axial direction of the guiding optical axis 1115.
  • the one or more second filters 1135 can include a plurality of filters having different parameters, such as a body filter, a head filter, and an infant filter.
  • the second filter 1135 can include a butterfly filter, a flat plate filter, or a combination of the two types of filters.
  • the second filter 1135 in the filter floating base 1110 is the same number and type and position one-to-one correspondence with the first filter 1145 in the filter replacement assembly 1105.
  • the number of the second filters 1135 may be three, and the number of the first filters 1145 is also three.
  • the type of the second filter may be a flat head filter, and the type of the first filter is also a flat head filter.
  • the radiation generated by the transmitting device 120 may pass through the first filter 1145 and its corresponding second filter 1135 in sequence after being incident on the collimator 1000 (corresponding to the collimator 130).
  • the filter floating base 1110 may further include a focus measuring plate 1130.
  • the focus measuring board 1130 can be fixedly disposed on the base 1125.
  • the focus measurement board can measure the size of the focus when the scanning system 100 performs image correction, thereby improving the measurement accuracy of the scanning system 100.
  • FIG 12a is a block diagram showing an example slicing assembly in accordance with some embodiments of the present application.
  • the slicing assembly 1205 can correspond to the slicing assembly 700 of FIG.
  • the slicing assembly 1205 can include a slicing plate assembly 1210, a transmission 1215, and a support device 1220.
  • the slice plate assembly 1210 and the transmission device 1215 can be detachably assembled and disposed on the support device 1220.
  • the slicing plate assembly 1210 can include a first slicing plate assembly 1225 and a second slicing plate assembly 1230.
  • the transmission 1215 can include a first transmission 1235 corresponding to the first slicing plate assembly 1225 and a second transmission 1240 corresponding to the second slicing plate assembly 1230.
  • first slice plate assembly 1225 can include a first slice holder 1225-1 and a first slice plate 1225-2, wherein the first slice plate 1225-2 can be fixedly disposed at the first Slice holder 1225-1.
  • the second slice plate assembly 1230 can include a second slice holder 1230-1 and A second slicing plate 1230-2, wherein the second slicing plate 1230-2 can be fixedly disposed on the second slicing bracket 1230-1.
  • the structures of the first slicing plate assembly 1225 and the second slicing plate assembly 1230 can be the same.
  • the slicing assembly 1210 can further include a first positioning block 1245 and a second positioning block 1250.
  • the first positioning block 1245 can be fixedly disposed on the first slice holder 1225-1 and aligned with the first slice plate 1225-2 in the Z-axis direction, and the second positioning block 1250 can be fixed. It is disposed on the second slice holder 1230-1 and arranged in the Z-axis direction with the second slice plate 1230-2.
  • the first positioning block 1245 and the second positioning block 1250 may have an adjustment gap between the first slicing plate 1225-2 and the second slicing plate 1230-2, respectively.
  • the adjustment gap may align the first slicing plate 1225-2 and the second slicing plate 1230-2 with the detector 140 in the Z-axis direction during installation.
  • the first transmission 1235 and the second transmission 1340 may be identical in structure and may independently control the movement of the first slicing plate assembly 1225 and the second slicing plate assembly 1230 in the Z-axis direction, respectively.
  • the first transmission device 1235 and the second transmission device 1240 may include one or more of a screw nut transmission structure, a linear bearing transmission structure, a worm gear transmission structure, or a rack and pinion transmission structure.
  • the first transmission 1235 can include a first ball screw 1235-1 disposed on the support device 1220 and a first wire that mates with the first ball screw 1235-1.
  • the female seat 1235-2, wherein the first silk female seat 1235-2 can be fixedly coupled to the first slice support 1225-1.
  • the second transmission device 1240 can include a second ball screw 1240-1 disposed on the support device 1220 and a second wire holder 1240 that cooperates with the second ball screw 1240-1. 2, wherein the second wire holder 1240-2 can be fixedly connected to the second slice holder 1235-1.
  • first ball screw 1235-1 and the second ball screw 1240-1 may be provided with a thread
  • first wire base 1235-2 and the second wire base 1340-2 may be provided.
  • a threaded hole wherein the threaded hole and the thread can cooperate with each other.
  • the first transmission 1235 and the second transmission 1240 are configured to convert rotational motion of the first ball screw 1235-1 and the second ball screw 1240-1 into the first wire socket Straight line transport of 1235-2 and the second wire base 1240-2 move.
  • the first wire base 1235-2 and the second wire base 1240-2 can be linearly moved in the Z-axis direction, thereby further The size of the opening between the first slicing plate 1225-2 and the second slicing plate 1230-2 is adjusted.
  • the first slice holder 1225-1 and the second slice holder 1230-1 may respectively include a first end and a second end, wherein the first end and the second end are oppositely disposed, wherein The first wire holder 1235-2 may be coupled to the first end of the first slice holder 1225-1, and the second wire holder 1240-2 may be coupled to the second end of the second slice holder 1230-1.
  • the first slice holder 1225-1 can connect the first slice plate 1225-2 and the first transmission device 1235
  • the second slice holder 1230-1 can connect the second slice plate 1230-2 and the second transmission device 1240.
  • first slice holder 1225-1 and the second slice holder 1230-1 may be changed without replacing or changing the first slice plate 1225- 2 and a second slicing plate 1230-2.
  • first slicing plate 1225-2 and the second slicing plate 1230-2 for example, opening shape, size, etc.
  • only the first slicing plate 1225-2 and the second slicing plate may be changed or replaced. 1230-2, without changing the structure of the first transmission device 1235 and the second transmission device 1240 and the first slice holder 1225-1 and the second slice holder 1230-1, thereby improving the expandability and reuse of the slice device Sex.
  • the support device 1220 can be a plate-like hollow structure that is partially hollowed out corresponding to the first and second slice plates 1225-2, 1230-2.
  • the hollow structure of the support device 1220 can reduce the weight of the slicing assembly 1205, thereby reducing the centrifugal force of the slicing assembly 1205 during scanning.
  • other components of the slicing device 1205 eg, the first transmission 1235 and/or the second transmission 1240
  • the first and second slicing plate assemblies 1225 and 1230 and the first and second transmissions 1235 and 1240 can be disposed on the support device 1220.
  • This arrangement allows the slicing plate assembly 1210 and the transmission 1215 to be more easily assembled and disassembled, and the slicing assembly 1205 is more easily positioned during installation, thereby enabling the slicing assembly 1205 and the detector 140 to be in the Z-axis direction. Precise alignment on the top.
  • a first linear guide 1255 and a second linear guide 1260 can be disposed on the support device 1220. Further, the supporting device 1220 may be provided with a first slider 1265 that cooperates with the first linear guide 1255 and a second slider 1270 that cooperates with the second linear guide 1250. In some embodiments, the first slider 1265 and the first slice bracket The first end of 1225-1 is coupled, and the second slider 1270 is coupled to the second end of the second slice holder 1230-1. In some embodiments, the linear guide and the slider are configured to move the first slicing plate assembly 1225 and the second slicing plate assembly 1230 in the direction of the linear guide.
  • the supporting device 1220 may be provided with a first supporting seat 1275 and a second supporting seat 1280 disposed opposite to each other.
  • the first support seat 1275 can be used to support the first ball screw 1235-1.
  • the first support base 1275 may include three support plates 1275-1, 1275-2, and 1275-3 arranged in the Z-axis direction, the three support plates 1275-1, 1275-2, and 1275.
  • the -3 is provided with a receiving hole through which the first ball screw 1235-1 can be accommodated.
  • the second support 1280 can be used to support the second ball screw 1240-1.
  • the second support base 1280 may include three support plates 1280-1, 1280-2, and 1280-3 arranged in the Z-axis direction, the three support plates 1280-1, 1280-2, and 1280.
  • the -3 is provided with a receiving hole through which the second ball screw 1240-1 can be accommodated.
  • the slicing assembly 1205 can further include a first limit device 1285 and a second limit device 1290.
  • the first limiting device 1285 can be used to determine whether the first slice holder 1225-1 returns to a specific position.
  • the particular location may be a starting zero.
  • the second limiting device 1290 can be used to determine whether the second slice holder 1230-1 returns to a specific position.
  • the first limiting device 1285 can include a first photo contact 1285-1 and a first photo sensor 1285-2.
  • the first photo contact piece 1285-1 is connected to one end of the first slice holder 1225-1 (for example, fixedly connected to the second end of the first slice holder 1225-1), and the first photoelectric sensor 1285-2 is disposed on the support device 1220.
  • the second limiting device 1290 can include a second photo contact 1290-1 and a second photo sensor 1290-2.
  • the second photosensor 1290-1 is connected to one end of the second slice holder 1230-1 (for example, fixedly connected to the first end of the second slice holder 1230-1), and the second photosensor 1290-2 is set. On the support device 1220.
  • the first photosensor 1285-2 and the second photosensor 1290-2 are mated with the first photo contact 1285-1 and the second photo contact 1290-1, respectively.
  • the mated photosensors and optoelectronic contacts can determine the position of the slicing plate assembly 1210 to which it is attached, thereby determining and confirming the size and position of the opening.
  • the first end of the first slice holder 1225-1 can be coupled to the first wire holder 1235-2 is fixedly connected to the first slider 1265, and the first slider 1265 and the first linear guide 1255 may be located below the first silk socket 1235-2, the first slice holder 1225-1
  • the second end may be fixedly coupled to the first photo contact 1285-1, and the first photo contact 1285-1 may be located below the second ball screw 1240-1.
  • the second end of the second slice holder 1230-1 can be fixedly connected with the second wire holder 1240-2 and the second slider 1275, and the second slider 1275 and the second linear guide 1260 can be located at the Below the second wire holder 1240-2, the first end of the second slice holder 1230-1 may be fixedly coupled to the first photo contact 1285-1, and the second photo contact 1290-1 may be located at the first ball Below the screw 1235-1.
  • the structure shown in Fig. 12a utilizes the space between the opposite ends (i.e., the first end and the second end) of the first slice holder 1225-1 and the second slice holder 1230-1, which can make the structure of the slice assembly 1205 more Compact, thereby making the overall volume of the scanning system 100 small.
  • the slicing device 1205 can further include a first driving device (not shown) coupled to the first transmission 1235 and a second driving device coupled to the second transmission 1240 (Fig. Not shown).
  • the first transmission device 1235 and the second transmission device 1240 may be respectively connected to the corresponding first driving device and the second driving device (not shown), so that they can respectively pass through a single
  • the driving device independently controls the movement of the individual slicing plates, thereby improving the transmission accuracy, and more conveniently controlling the position and size of the opening between the first slicing plate 1225-2 and the second slicing plate 1230-2.
  • Figure 12b is a bottom plan view of an example slicing assembly, shown in accordance with some embodiments of the present application.
  • the slicing assembly 1205 can include a slicing plate assembly 1210, a transmission 1215, and a support device 1220.
  • the slicing plate assembly 1210 can include a first slicing plate assembly 1225 and a second slicing plate assembly 1230
  • the transmission 1215 can include a first transmission corresponding to the first slicing plate assembly 1225. 1235 and a second transmission 1240 corresponding to the second slicing plate assembly 1230.
  • the slicing assembly 1210 can further include a first positioning block 1245 and a second positioning block 1250.
  • the first positioning block 1245 and the second positioning block 1250 may have an adjustment gap between the first slicing plate 1225-2 and the second slicing plate 1230-2, respectively.
  • the adjustment gap can quickly align the first slicing plate 1225-2 and the second slicing plate 1230-2 with the detector 140 in the Z-axis direction during installation.
  • Figure 13a is a block diagram showing an example slicing assembly in accordance with some embodiments of the present application. Cut The sheet assembly 1310 can correspond to the slice assembly 800 of FIG. As shown in Figure 13a, the slicing assembly 1310 can include a rotatable drum 1320, one or more slicing plates 1330 having openings, a rotating device 1340, and a support device 1350. Transmission 1340 can include a motor 1340-1 and a coupling 1340-2. The motor 1340-1 may be disposed on the supporting device 1350 and may be connected to one end of the rotating tube 1320 through the coupling 1340-2. The drum 1320 is rotatable about the axis of the motor 1340-1.
  • the motor 1340-1 can be controlled to rotate the drum 1320 until a specified angle is reached.
  • Different slice plates 1330 and corresponding through holes 1360 can be selected by changing the angle of the drum 1320, thereby achieving adjustment or modification of the beam size and position of the rays.
  • the support device 1350 can include a base substrate 1350-1, a front bearing support 1350-2, and a rear bearing support 1350-3.
  • the front bearing support 1350-2 and the rear bearing support 1350-3 may be fixedly disposed on the base substrate 1350-1. Further, both ends of the drum 1320 may be coupled to the front bearing support 1350-2 and the rear bearing support 1350-3, respectively.
  • the rotation of the drum 1320 can be made more stable, thereby increasing the scanning system. 100 working precision.
  • Figure 13b is a schematic illustration of the structure of an example drum shown in accordance with some embodiments of the present application.
  • the drum 1320 is rotatable about its axis.
  • the drum 1320 can be a cylindrical structure in which one or more through holes 1360 can be formed.
  • one or more slicing plates 1330 may be overlaid on a side surface of the post structure.
  • the size and location of the one or more vias 1360 can correspond to the size and location of the opening of the one or more slicing plates 1330.
  • the size of the opening of the one or more slicing plates 1330 may be different than the size of the one or more through holes 1360, for example, the opening of the one or more slicing plates 1330 may be One or more of the through holes 1360 are small. Further, the extending direction of the through hole 1360 may be perpendicular to a plane in which the slicing plate 1330 is located. In some embodiments, the positions of the one or more through holes 1360 do not coincide with each other, and thus the positions of one or more 1330 slice plates corresponding to the one or more through holes 1360 do not coincide with each other, thereby The plurality of slicing plates 1330 are not overlapped with each other when they are disposed on the side surface of the drum.
  • the drum 1320 is a polygonal cylinder having a pair of opposite even planes 1380, wherein the opposing two planes 1380 are a planar group.
  • the number of through holes 1360 and the slicing plate 1330 may be the same as the plane group The numbers are the same, wherein the slice plates 1330 can be respectively disposed on any one of the plane groups, and the through holes 1360 can respectively communicate with two planes 1380 in the corresponding plane group.
  • the drum 1320 can be a cylinder of other shapes, such as a cylinder or the like.
  • FIG. 13c is a schematic illustration of the structure of an exemplary sliced panel, in accordance with some embodiments of the present application.
  • the slicing plate 1330 may be a flat plate having an opening, which may be a rectangle, an elongated strip, an ellipse, or the like.
  • the slicing plate 1330 can be removably coupled to the drum 1320 such that the slicing plate 1330 can be easily replaced or repaired.
  • the slicing plate 1330 and the drum 1320 can be an integrally formed structure.
  • the shape and/or size of the openings of the one or more slicing plates 1330 may be partially or fully different to meet different beam fan size and position adjustment requirements.
  • the reel 1320 can be included in the slicing assembly 1310 without including a slicing plate 1330, the surface or entirety of which can function as previously described for the slicing plate 1330.
  • the ray 1370 can be incident from one side of the drum 1320 and exit through the through hole 1360 from the opposite side of the drum 1320.
  • Figure 13d is a schematic cross-sectional view of an exemplary slicing system shown in accordance with some embodiments of the present application when a ray is incident.
  • rays 1370 incident from the slicing plate 1330 on one side of the column structure may exit from the opposite side of the post structure after passing through the corresponding through holes 1360.
  • adjustment of the fan beam size and position of the ray can be achieved by changing the structure of the slicing plate 1330 and the through hole 1360.
  • the radiation can be directed into different slice plates 1330 on the circumferential side of the drum 1320 by rotating the drum 1320 to effect adjustment of the fan beam size and position.
  • a slice plate 1330 can be placed around every other plane 1380 of the circumference of the polygonal cylinder, i.e., every two slice plates 1330 are separated by a plane 1380 that does not include the slice plate 1330.
  • This structure can reduce the difficulty in setting the slicing plate 1330 and the through hole 1360, and can also increase the accuracy of switching between the slicing plates 1330 when the reel 1320 is rotated.
  • the number of planes 1380 is six, and the number of plane groups, slice plates 1330, and through holes 1360 are three.

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Abstract

一种准直器（130, 500, 1000），该准直器（130, 500, 1000）包括切片组件（530, 700, 800, 1010, 1205, 1310）、过滤组件（520, 600, 1030）和支撑与防护组件（510, 1020），该切片组件（530, 700, 800, 1010, 1205, 1310）和过滤组件（520, 600, 1030）可以可拆卸地与支撑与防护组件（510, 1020）相连接。射线射入该准直器（130, 500, 1000）后依次通过该切片组件（530, 700, 800, 1010, 1205, 1310）和该过滤组件（520, 600, 1030），该切片组件（530, 700, 800, 1010, 1205, 1310）可以用于调整射线射入准直器（130, 500, 1000）的扇束宽度，该过滤组件（520, 600, 1030）可以用于使所述射线经过不同的过滤器(610, 640, 1145, 1135)，以进行不同类型的扫描工作。

Description

一种用于扫描系统的准直器
交叉引用
本申请要求2015年10月30日提交的编号为CN201520858351.6的中国申请，2015年12月25日提交的编号为CN201521103639.9的中国申请以及2015年12月25日提交的编号为CN201521103625.7的中国申请的优先权，其上提到的申请的内容以引用方式被包含于此。
技术领域
本申请涉及一种扫描仪器，尤其涉及一种用于CT(Computed Tomography)扫描系统的准直器。
背景技术
X射线计算机断层成像(X-ray CT)是一种利用数位几何处理，重建三维医学影像的技术。该技术通过单一轴面的X射线旋转照射人体，由于不同的组织对X射线的吸收能力(或称阻射率)不同，可以用电脑的三维技术重建出断层面影像。
CT扫描系统通常由X射线发射装置、探测器和机架三大部件组成。准直器是CT扫描系统的一个重要部件，它通常设置于机架上，位于X射线发射装置与患者之间，用于遮挡部分的X射线。准直器可以具有一个或多个开口，通过控制其开口的大小可以控制X射线的照射范围，以避免患者接收不必要的X射线辐射，减少辐射剂量。其另一功能是控制待扫描部位的切片层厚度，满足成像条件的要求，其结构设计的合理性直接影响CT扫描系统成像的质量。现有的准直器，其结构较为复杂且不易拆卸，给日常的维护保养工作带来不便。针对上述问题，本申请对准直器的结构提出可行的优化设计方案。
简述
本申请提供的准直器对现有技术中的准直器的各功能组件进行了结构上的优化和改变，使其射线阻挡防护功能、过滤功能和射线扇束宽度调整功能能够 通过各自独立的组件来实现。各组件在互相组合时也不存在结构上的交叉和相互间干扰，从而降低了准直器系统的复杂程度。同时，通过简单的拆卸就可以实现相同模块间的替换，方便了维护工程师的日常维护工作。
本申请提供了一种准直器，该准直器可以包括切片组件、过滤组件和支撑与防护组件。该切片组件和过滤组件可以可拆卸地与支撑与防护组件相连接。射线射入该准直器后依次通过切片组件和过滤组件，该切片组件可以用于调整射线射入准直器的扇束宽度，该过滤组件可以用于使该射线经过不同的过滤器，以进行不同类型的扫描工作。
在一些实施例中，切片组件可以包括一个切片组件、一个传动装置和一个支撑装置。该两个切片板包括两个切片板。该两个切片板和传动装置可以在进行组装后，设置于该支撑装置上。两个切片板之间可以形成开口，传动装置可以控制两个切片板进行运动以改变开口的大小。
在一些实施例中，支撑装置可以为板状镂空结构，其中，该镂空部分可以与开口相对应地设置。
在一些实施例中，切片组件可以包括一个能够绕其轴线转动的转筒，该转筒的侧面可以设有通孔以供射线穿过。
在一些实施例中，切片组件可以包括一个设置于转筒外侧的具有开口的切片板，射线穿过该开口，通过通孔后可以从相对的另一侧射出。
在一些实施例中，开口的形状可以为长条形，长方形或椭圆形。
在一些实施例中，切片板可以为平板结构，通孔的延伸方向可以垂直于该切片板所在的平面。
在一些实施例中，切片组件可以包括多个具有开口的切片板以及一个转筒，该转筒可以开设有多个位置互不重合的通孔。
在一些实施例中，转筒可以为多边形柱体，其侧表面具有两两相对的多个平面，其中，相对的两个平面为一个平面组，通孔和切片板的数量与平面组的数量可以相同，每个切片板可以分别设置于每个平面组的两个平面中的任意一个平面上，每个通孔可以分别连通每个平面组中的两个平面。
在一些实施例中，过滤组件可以包括一个过滤器更换组件和一个过滤器浮动底座，其中过滤器更换组件可拆卸的设置于过滤器浮动底座上。
在一些实施例中，过滤器更换组件可以包括一个过滤器支架、一个过滤器固定板和一个或多个第一过滤器，其中，一个或多个第一过滤器可以通过过滤器固定板设置于过滤器支架上。
在一些实施例中，过滤器浮动底座可以包括一个导向光轴、一个直线轴承、一个底座和一个或多个第二过滤器。直线轴承和一个或多个第二过滤器可以设置于底座上，导向光轴可以设置于直线轴承中，其中，导向光轴可以旋转并带动底座沿导向光轴的轴向移动。
在一些实施例中，一个或多个第一过滤器与一个或多个第二过滤器的数量与类型相同且位置一一对应。
在一些实施例中，一个或多个第一过滤器和一个或多个第二过滤器可以为蝶型过滤器或平板过滤器。
在一些实施例中，一个或多个第一过滤器和一个或多个第二过滤器可以沿导向光轴的轴向依次设置。
在一些实施例中，支撑与防护组件可以为一个盒体结构，该盒体结构具有一个上开口和一个侧开口，过滤组件可以从侧开口处设置于该盒体结构中，切片组件可以从上开口处盖设于该盒体结构上。
附图描述
为了更清楚地说明本申请实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图将本申请应用于其它类似情景。除非从语言环境中显而易见或另做说明，图中相同标号代表相同结构和操作。
图1是根据本申请的一些实施例所示的扫描系统的一种示例系统配置的示意图；
图2是根据本申请的一些实施例所示的控制及处理系统的一种示例系统配置的示意图；
图3是根据本申请的一些实施例所示的控制及处理系统的示意图；
图4是根据本申请的一些实施例所示的示例扫描系统的示例性流程 图；
图5是根据本申请的一些实施例所示的示例准直器的组件示意图；
图6是根据本申请的一些实施例所示的示例过滤组件的组件示意图；
图7是根据本申请的一些实施例所示的示例切片组件的组件示意图；
图8是根据本申请的一些实施例所示的示例切片组件的组件示意图；
图9是根据本申请的一些实施例所示的示例准直器调整的示例性流程图；
图10a是根据本申请的一些实施例所示的示例准直器的结构示意图；
图10b是根据本申请的一些实施例所示的示例准直器的结构分解示意图；
图11a是根据本申请的一些实施例所示的示例过滤组件的结构示意图；
图11b是根据本申请的一些实施例所示的示例过滤组件的结构分解示意图；
图12a是根据本申请的一些实施例所示的示例切片组件的结构示意图；
图12b是根据本申请的一些实施例所示的示例切片组件仰视结构示意图；
图13a是根据本申请的一些实施例所示的示例切片组件的结构示意图；
图13b是根据本申请的一些实施例所示的示例转筒的结构示意图；
图13c是根据本申请的一些实施例所示的示例切片板的结构示意图；
图13d是根据本申请的一些实施例所示的示例切片系统在射线入射时的剖面结构示意图。
具体描述
如本说明书和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/或“该”等词并非特指单数，也可包括复数。术语“包括”与“包含”仅提示包括已明确标识的步骤和元素，而这些步骤和元素不构成一个排它性的罗列，方法或者设备也可能包括其它的步骤或元素。术语“基于”是“至少部分地基于”。术语“一个实施例”表示“至少一个实施例”；术语“另一实施例”表示“至少一个另外的实施例”。其他术语的相关定义将在下文描述中给出。
本申请中使用了流程图用来说明根据本申请的实施例的系统所执行 的操作。应当理解的是，前面或下面操作不一定按照顺序来精确地执行。相反，可以按照倒序或同时处理各种步骤。同时，也可以将其他操作添加到这些过程中，或从这些过程移除某一步或数步操作。
本申请涉及一种扫描系统，进一步的，一种医学扫描系统。该系统可以包括发射装置、准直器、探测器、检测床、图像重建系统等。其中，准直器可以包括切片组件、过滤组件、支撑与防护组件等。在一些实施例中，该切片组件可以包括两个切片板，该两个切片板之间保持一定间隔以形成一个开口。在一些实施例中，该切片组件可以包括一个转筒。在一些实施例中，该切片组件可以进一步包括一个或多个具有开口的切片板，其中，该一个或多个切片板设置于转筒的侧表面上。
图1是根据本申请的一些实施例所示的扫描系统的一种示例系统配置的示意图。扫描系统100可以包括一个机架110、一个发射装置120、一个准直器130、一个检测床140、一个探测器150和一个控制及处理系统160。机架110可以用于支撑扫描系统100中的一个或多个部件。在一些实施例中，所述机架110中间可以开设有扫描腔体。在一些实施例中，所述扫描腔体可以为圆形。发射装置120可以用于发射射线或信号，所述射线可以包括X射线、γ射线等。准直器130可以用于对所述射线进行准直，所述准直可以包括对所述射线的扇束的宽度和方向进行调整。检测床140可以用于放置检测对象，所述检测对象可以包括人或物体。探测器150可以用于接收穿过所述检测对象之后的射线。其中，所述探测器150可以与所述发射装置120相对地设置于机架110中。控制及处理系统160可以用于控制发射装置120、准直器130和检测床140(例如这些部件的位置及工作状态等等)。进一步地，控制及处理系统160可以生成并显示一个医学影像。
在一些实施例中，进行检查时，患者可以在检测床140上沿着Z轴方向被推入到所述扫描腔体中。其中，所述Z轴方向可以为检测床140移动的方向。进一步地，发射装置120可以绕Z轴方向旋转并发射出X射线。探测器150与发射装置120相对设置并可以一起同步转动。在转动的过程中，探测器150可以同时采集扫描数据，所述扫描数据可以是X射线穿过人体后的数据。当检测完成后，探测器150可以将采集到的数据发送给控制及处理系统160。进一步地， 所述控制及处理系统160可以利用所述采集到的数据重建一个患者的医学影像。
在一些实施例中，扫描系统100可以进行螺旋扫描。例如，在进行扫描期间，患者可以沿着Z轴方向在扫描腔体中移动，同时发射装置120可以绕Z轴方向进行旋转，这样相对于患者，发射装置120可以产生一个螺旋的运动轨迹。在一些实施例中，探测器150可以将采集到的经过螺旋扫描后的数据发送给控制及处理系统160进行重建，并获得一个在Z轴方向上更宽的医学影像图像。
图2是根据本申请的一些实施例所示的控制及处理系统的一种示例系统配置的示意图。如图2所示，控制及处理系统160可以包括一个数据总线210、一个处理器220、一个只读存储器(ROM)230、一个随机存储器(RAM)240、一个通信端口250、一个输入/输出端口260、一个硬盘270和一个与输入/输出端口260相连的显示器280。所述控制及处理系统160内各硬件之间的连接方式可以是有线的、无线的或两者的结合。任何一个硬件都可以是本地的、远程的或两者的结合。数据总线210可以用于传输数据信息。在一些实施例中，控制及处理系统160内各硬件之间可以通过所述数据总线210进行数据的传输。例如，处理器220可以通过所述数据总线210将数据发送到存储器或输入/输出端口260等其它硬件中。需要注意的是，所述数据可以是真正的数据，也可以是指令代码、状态信息或控制信息。在一些实施例中，数据总线210可以为工业标准(ISA)总线、扩展工业标准(EISA)总线、视频电子标准(VESA)总线、外部部件互联标准(PCI)总线等。处理器220可以用于逻辑运算、数据处理和指令生成。在一些实施例中，处理器220可以从内部存储器中获取数据/指令，所述内部存储器可以包括只读存储器(ROM)、随机存储器(RAM)、高速缓冲存储器(Cache)(在图中未示出)等。在一些实施例中，处理器220可以包括多个子处理器，所述子处理器可以用于实现系统的不同功能。只读存储器230用于控制及处理系统160的加电自检、控制及处理系统160中各功能模块的初始化、控制及处理系统160的基本输入/输出的驱动程序等。在一些实施例中，只读存储器可以包括可编程只读存储器(PROM)、可编程可擦除只读存储器(EPROM)、一次编程只读存储器(OPTROM)等。随机存储器240用于存放操作系统、各种应用程序、数据等。在一些实施例中，随机存储器240可以包括静态随机存储器(SRAM)、动态随机存储器(DRAM)等。通信端口250用于连接操作系统与外部网络，实 现它们之间的通信交流。在一些实施例中，通信端口250可以包括FTP端口、HTTP端口或DNS端口等。输入/输出端口260用于外部设备或电路与处理器210之间进行数据、信息的交换和控制。在一些实施例中，输入/输出端口260可以包括AT端口、PCI端口、IDE端口等。硬盘270用于存储系统160所产生的或从系统160外所接收到的信息及数据。在一些实施例中，硬盘270可以包括机械硬盘(HDD)、固态硬盘(SSD)或混合硬盘(HHD)等。显示器280用于将系统160生成的信息、数据呈现给用户。在一些实施例中，显示器280可以包括一个物理显示器，如带扬声器的显示器、LCD显示器、LED显示器、OLED显示器、电子墨水显示器(E-Ink)等。
图3是根据本申请的一些实施例所示的控制及处理系统的示意图。控制及处理系统160可以包括一个处理模块310、一个切片控制模块320、一个检测床控制模块330、一个数据采集模块340、一个图像重建模块350、一个显示模块360和一个存储模块370。所述控制及处理系统160内各模块之间的连接方式可以是有线的、无线的或两者的结合。任何一个模块都可以是本地的、远程的或两者的结合。本申请中的“模块”，“子模块”，“单元”，“子单元”指的是存储在硬件、固件中的逻辑或一组软件指令。这里所指的“模块”，“子模块”，“单元”，“子单元”能够通过软件和/或硬件模块执行，也可以被存储于任何一种计算机可读的非临时媒介或其他存储设备中。在某些实施例中，一个软件模块可以被编译并连接到一个可执行的程序中。显然，这里的软件模块可以对自身或其他模块传递的信息做出回应，并且/或者可以在检测到某些事件或中断时做出回应。可以在一个计算机可读媒介上提供一个被设置为可以在计算设备上(例如处理器220)执行操作的软件模块，这里的计算机可读媒介可以是光盘、数字光盘、闪存盘、磁盘或任何其他种类的有形媒介；也可以通过数字下载的模式获取软件模块(这里的数字下载也包括存储在压缩包或安装包内的数据，在执行之前需要经过解压或解码操作)。这里的软件代码可以被部分的或全部的储存在执行操作的计算设备的存储设备中，并应用在计算设备的操作之中。软件指令可以被植入在固件中，例如可擦可编程只读存储器(EPROM)。显然，硬件模块可以包含连接在一起的逻辑单元，例如门、触发器，以及/或包含可编程的单元，例如可编程的门阵列或处理器。这里所述的模块或计算设备的功能优选的作为软件模块 实施，但是也可以被表示在硬件或固件中。一般情况下，这里所说的模块是逻辑模块，不受其具体的物理形态或存储器的限制。一个模块能够与其他的模块组合在一起，或被分隔成为一系列子模块。
处理模块310可以用于数值计算，逻辑处理和指令生成等，其功能可以由图2中的处理器220来实现。在一些实施例中，处理模块310可以从数据收集模块340或存储模块370中获取数据或信息。进一步地，处理模块310可以对所述数据或信息进行数值计算和/或逻辑处理并发送给切片控制模块320、检测床控制模块330、显示模块360或者存储模块370。在一些实施例中，处理模块310可以对数据采集模块340所获取的外部数据进行数值计算，得到所需要的目标参量。例如，处理模块310可以根据探测器150所采集到的扫描数据，获得不同时刻、不同角度、不同位置的穿过被测物体后的X射线的强度大小，从而进一步计算出被测物体对应部位的X射线吸收能力的强弱。在一些实施例中，处理模块310可以对获取的数据和信息进行逻辑判断与决策，并生成一个可执行的指令。例如，处理模块310可以从数据采集模块340和/或存储模块370获取检测床的目标位置信息。进一步地，处理模块310可以检测检测床140当前所处的位置，并与所述检测床的目标位置进行比较。当检测床140的位置与所述目标位置不匹配时，处理模块310可以生成一个检测床移动指令，并通过检测床控制模块330控制检测床140向所述目标位置进行移动。当检测床140移动到所述目标位置后，处理模块310可以生成一个检测床移动停止指令。在一些实施例中，处理模块310可以生成一个发射装置启动指令。发射装置120可以根据所述发射装置启动指令进行开启。其中，所述发射装置开启指令可以包括预设的发射装置120的开启时间。进一步地，处理模块310可以计算发射装置120开启的时间，并与所述预设的开启时间进行比较。当发射装置120开启时间达到所述预设的开启时间时，处理模块310可以发出一个发射装置关闭指令，所述发射装置120可以根据所述发射装置关闭指令进行关闭。在一些实施例中，处理模块310可以被动地接收数据或信息，也可以根据用户或其他模块的需求通过数据采集模块340主动地获取数据或信息。
切片控制模块320可以用于执行处理模块310生成的或用户输入的切片控制指令，其功能可以通过图2中处理器220来实现。其中，所述切片控制指令 可以包括切片位置调整指令、开口尺寸调整指令或角度调整指令。所述切片位置调整指令可以用于调整切片组件的位置，所述开口尺寸调整指令可以用于调整切片组件的开口尺寸，所述角度调整指令可以用于调整切片组件的旋转角度。在一些实施例中，切片控制模块320可以获取处理模块310发出的或者是用户输入的切片位置调整指令，所述切片位置调整指令中可以包括切片目标位置信息。进一步地，切片控制模块320可以根据所述切片目标位置信息控制切片组件或其中的一个或多个部件移动至对应的目标位置。切片控制模块320可以获取处理模块310发出的或者是用户输入的所述开口尺寸调整指令或者角度调整指令，并可以根据所述指令对切片组件或其中的部件进行相应的调整。
检测床控制模块330可以用于执行处理模块310生成的或用户输入的检测床控制指令，其功能可以通过图2中处理器220来实现。其中，所述检测床控制指令可以包括检测床位置调整指令和检测床移动速度调整指令。所述检测床位置调整指令可以用于调整检测床在Z轴方向的位置。所述检测床移动速度调整指令可以用于调整检测床沿Z轴方向运动时的移动速度。在一些实施例中，所述检测床位置调整指令可以包括检测床的目标位置信息，所述检测床移动速度调整指令可以包括预设的检测床的移动速度信息。在一些实施例中，检测床控制模块330可以获取处理模块310发出的或者是用户输入的所述检测床位置调整指令，并根据所述检测床位置调整指令中的目标位置信息控制检测床140在Z轴方向上向目标位置进行移动。在一些实施例中，检测床控制模块330可以获取处理模块310发出的或者是用户输入的所述检测床移动速度调整指令，并根据所述检测床移动速度调整指令中预设的检测床的移动速度信息控制检测床140在Z轴方向进行移动或调整移动速度。
数据采集模块340可以用于获取外部数据或者接收用户输入的信息，其功能可以通过图2中处理器220来实现。在一些实施例中，数据采集模块340可以将获取到的数据或信息发送给处理模块310进行处理。在一些实施例中，数据采集模块340可以将获取到的数据或信息发送给切片控制模块320或检测床控制模块330，所述切片控制模块320或检测床控制模块330可以根据所述数据或信息对相应的模块或设备进行控制。在一些实施例中，数据采集模块340可以将获取到的数据或信息发送给存储模块370进行存储。在一些实施例中，数据采集 模块340可以接收来自处理模块310的一个数据采集指令，并完成相应的数据采集操作。在一些实施例中，数据采集模块340可以获取外部数据，并将所述外部数据传送给处理模块310进行相应的目标参量的计算。例如，数据采集模块340可以获取探测器150采集的扫描数据，并将所述数据发送给处理模块310进行进一步计算和处理。在一些实施例中，数据采集模块340可以在采集数据后对所述采集到的数据进行预处理。
图像重建模块350可以用于构建一个医学影像，其功能可以由图2中处理器220来实现。在一些实施例中，图像重建模块350可以从处理模块310或存储模块370中获取数据或信息，并根据所述数据或信息构建所述医学影像。进一步地，所述医学影像可以是一个人体三维医学影像。在一些实施例中，图像重建模块350可以从处理模块310或存储模块370中获取数据，所述数据可以包括不同时间、不同位置、不同角度的扫描数据。根据所述扫描数据，图像重建模块350可以计算出人体对应部位的特征或状态，如人体对应部位对射线的吸收能力、人体对应部位组织的密度等，从而构建出所述人体三维医学影像。进一步地，可以通过显示模块360将所述人体三维医学影像进行显示，或者通过存储模块370进行存储。
显示模块360可以用于将数据或信息进行显示，其功能可以通过图2中的显示器280来实现。在一些实施例中，显示模块360可以呈现图像重建模块350生成的人体三维医学影像。在一些实施例中，显示模块360可以呈现处理模块310生成的相关数据和指令信息。在一些实施例中，显示模块360可以直接呈现数据采集模块340获取到的信息，所述信息可以包括但不限于探测器150的测量数据信息、扫描系统100的工作状态信息或处理模块310生成的指令信息等。在一些实施例中，显示模块360呈现的信息可以包括但不限于光线、文字、声音、图像等。在一些实施例中，显示模块360可以包括一个物理显示器，如带扬声器的显示器、LCD显示器、LED显示器、OLED显示器、电子墨水显示器(E-Ink)等。在一些实施例中，显示模块360可以接收一个反馈信息，并可以将所述反馈信息发送给处理模块310。进一步地，处理模块310可以根据所述反馈信息生成一个相应的控制指令。例如，显示模块360可以显示信息“检测床到位，是否开启发射装置？”，在收到用户的反馈信息，例如，“确认开启” 后，可以通过处理模块310生成开启相应设备的指令，并开启相应设备。
存储模块370可以用于存储信息或数据，其功能可以通过图2中硬盘270、只读存储器230、随机存储器240中的一种或多种的组合来实现。存储模块370可以存储控制及处理系统160中其他模块或控制及处理系统160外的模块或设备的信息。在一些实施例中，存储模块370可以将存储的信息发送给处理模块310进行处理。在一些实施例中，存储模块370可以存储处理模块310生成的信息。在一些实施例中，存储模块370存储的信息可以包括探测器150的扫描信息、用户输入的控制命令或参数信息、处理模块310生成的中间数据或完整数据信息等。在一些实施例中，存储模块370可以包括但不限于常见的各类存储设备如固态硬盘、机械硬盘、USB闪存、SD存储卡、光盘、随机存储器(RAM)和只读存储器(ROM)等。在一些实施例中，存储模块370可以是系统内部的存储设备，也可以是系统外部或外接的存储设备，如云存储服务器上的存储器。
图4是根据本申请的一些实施例所示的示例扫描系统的示例性流程图。步骤402可以包括获取目标信息。在一些实施例中，所述目标信息可以通过数据采集模块340采集获得或通过用户输入获得。进一步地，所述通过数据采集模块340采集到的目标信息可以包括检测床位置信息、系统工作状态信息和系统参数信息等。所述用户输入的目标信息可以包括参数设置信息、控制信息等。
步骤404可以包括根据步骤402中获取到的目标信息产生相应的控制指令。所述控制指令可以包括切片控制指令、检测床控制指令、发射装置开启指令等，其中，所述切片控制指令可以包括切片位置调整指令或角度调整指令(所述切片控制指令、检测床控制指令、发射装置控制指令的详细说明可以参见图3及相应的描述)。
步骤406可以包括根据步骤404中产生的控制指令执行一个或多个控制操作。在一些实施例中，检测床控制模块330可以获取步骤404中产生的所述检测床位置调整指令，并对检测床的位置进行调整。在一些实施例中，切片控制模块320可以获取步骤404中产生的切片位置调整指令，并调整切片组件的位置。在一些实施例中，切片控制模块320可以获取步骤404中产 生的角度调整指令，并根据所述角度调整指令控制切片组件中的转筒进行旋转。在一些实施例中，发射装置120可以获取步骤404中产生的发射装置开启指令，并启动相应装置。在一些实施例中，发射装置120可以在404和/或步骤406中获取一个发射装置开启指令，并开始相应的检测(例如在步骤408中)。
在步骤410中，探测器150可以采集目标数据，并将采集到的目标数据发送给处理模块310进行处理。所述数据可以包括不同时间、不同位置、不同角度的扫描数据。在步骤412中，可以通过处理模块310对所述目标数据进行计算处理，并进一步通过图像重建模块350生成一个医学影像。在步骤414中，显示模块360可以接收在步骤412中产生的医学影像，并进一步进行呈现。
图5是根据本申请的一些实施例所示的示例准直器的组件示意图。准直器500可以设置于检测床150与发射装置120之间。准直器500可以包括一个支撑与防护组件510、一个过滤组件520和一个切片组件530。(准直器500的示例性结构图可以参见图10及相应的描述)。支撑与防护组件510可以用于给准直器500提供整体结构上的支撑并起到部分防护作用。过滤组件520可以用于对穿过准直器500的射线进行过滤，降低射线强度，以减小对人体危害。进一步地，过滤组件520可以包括一种或多种过滤器，所述一种或多种过滤器可以具有不同的过滤参数。在检测过程中，根据不同的检测需求可以选取使用所述具有不同过滤参数的过滤器。切片组件530可以用于调整穿过准直器500的射线的扇束宽度。在一些实施例中，发射装置120可以产生射线，所述射线可以依次通过切片组件530和过滤组件520。切片组件530可以调整所述射线的扇束宽度，过滤组件520可以调整所述射线的强度。在一些实施例中，支撑与防护组件510可以为一个盒体结构，并具有一个上开口和一个侧开口。所述过滤组件520可以从侧开口处设置于所述支撑与防护组件510中，而所述切片组件530可以从上开口处盖设于所述支撑与防护组件510上。
图6是根据本申请的一些实施例所示的示例过滤组件的组件示意图。如图6所示，过滤组件600可以包括一个过滤器更换组件601和一个过滤器浮动底座602(过滤组件600的示例性结构图可以参见图11及相应的描述)。 在一些实施例中，过滤器更换组件601可以与过滤器浮动底座602可拆卸地连接。所述过滤器更换组件601可以包括一个或多个第一过滤器610，一个过滤器固定板620和一个过滤器支架630。其中，所述一个或多个第一过滤器610可以通过所述过滤器支架630固定连接在所述过滤器固定板620上。在一些实施例中，所述一个或多个第一过滤器610可以沿所述过滤器浮动底座602移动的方向并排地设置。进一步地，所述一个或多个第一过滤器610可以包括具有不同参数的多种过滤器，如体部过滤器、头部过滤器、婴儿过滤器等。所述体部过滤器可能具有较低的过滤能力，从而可以保持较高的射线强度，在体部或多器官重叠的区域可以获得高质量的图像。所述头部第一过滤器可能具有较高的过滤能力，在检测过程中可以对脑部进行较好的保护。所述婴儿过滤器可能具有这些过滤器种类中最高的过滤能力，在检测过程中可以将对婴儿的组织或器官的损伤降到最小。在一些实施例中，第一过滤器610可以包括蝶型过滤器、平板型过滤器或这两种类型过滤器的结合。
过滤器浮动底座602可以包括一个或多个第二过滤器640、一个导向光轴650、一个直线轴承660和一个底座670。在一些实施例中，所述直线轴承660和所述第二过滤器640可以固定设置在底座670上。进一步地，所述导向光轴650可以设置于直线轴承660中。在一些实施例中，导向光轴650可以旋转并能够通过其自身的旋转带动底座670沿着导向光轴650的轴向进行移动。在一些实施例中，所述一个或多个第二过滤器640可以沿导向光轴650的轴向并排地设置。进一步地，所述一个或多个第二过滤器640可以包括具有不同参数的多种过滤器，如体部过滤器、头部过滤器、婴儿过滤器等。在一些实施例中，第二过滤器640可以包括蝶型过滤器、平板型过滤器或这两种类型过滤器的结合。在一些实施例中，过滤器浮动底座602中的第二过滤器640和过滤器更换组件601中的第一过滤器610的数量相同且类型和位置一一对应。在一些实施例中，发射装置120产生的射线在射入准直器130后可以依次经过第一过滤器610及其对应的第二过滤器640。进一步地，过滤器浮动底座602可以包括一个焦点测量板，所述焦点测量板可以固定设置在底座670上。在一些实施例中，所述焦点测量板可以在扫描系统100进行图像校正时测量焦点的大小，从而提高扫描系统100的测量精度。
图7是根据本申请的一些实施例所示的示例切片组件的示意图。切片组件700可以与图5中所示的切片组件530相对应。如图7所示，切片组件700可以包括一个切片板组件710，一个传动装置720和一个支撑装置730。(切片组件700的结构示意图可以参见图12a及相应描述)。切片板组件710和传动装置720可以进行组装后，设置于支撑装置730上。在一些实施例中，切片板组件710可以包括一个第一切片板710-1和一个第二切片板710-2，其中所述第一切片板710-1和所述第二切片版710-2之间的间隔形成一个开口。在一些实施例中，发射装置120可以产生一个射线，所述射线经过所述切片板组件710时可以通过所述开口，而在其他部分被阻挡或吸收。进一步地，射线通过开口后的扇束宽度可以与所述开口的大小有关。在一些实施例中，传动装置720可以通过控制切片版710-1和710-2的移动，调整所述开口的大小，进而调整所述射线的扇束宽度。
图8是根据本申请的一些实施例所示的示例切片组件的示意图。切片组件800可以与图5中所示的切片组件530相对应。如图8所示，切片组件800可以包括一个转筒810、一个或多个切片板820、一个传动装置830和一个支撑装置840。(切片组件800的结构示意图可以参见图13及相应描述)。在一些实施例中，切片板820可以设置于转筒810的侧表面，而转筒810和传动装置830可以进行组装后，设置在支撑装置840上。在一些实施例中，所述一个或多个切片板820可以分别包括一个或多个开口。进一步地，所述开口的形状和大小可以不同。在一些实施例中，发射装置120可以产生一个射线，所述射线经过所述一个或多个切片板820时可以穿过所述一个或多个开口，而在其他部分被阻挡或吸收。在一些实施例中，通过改变转筒810的角度可以选取不同的切片板820，从而实现对射线的扇束大小和位置的调整或修改。
图9是根据本申请的一些实施例所示的示例准直器调整的示例性流程图。步骤902可以包括获取一个控制指令，所述控制指令可以由处理模块310发出。所述控制指令可以包括切片位置调整指令、开口大小调整指令、角度调整指令和/或过滤器选择指令等。所述切片位置调整指令可用于调整切片组件530的位置。所述开口大小调整指令可用于调整切片(例如图12中所示的第一切片板1225-2和第二切片板1230-2)间开口的大小。所述角度调整指令可用于调整转筒810的 角度。所述过滤器选择指令可用于选择过滤组件520中第一过滤器610和/或第二过滤器640的类型。其中，所述过滤器类型可以包括体部过滤器、头部过滤器、婴儿过滤器等。
步骤904可以包括根据步骤902中所获取的控制指令对过滤组件520和/或切片组件530中的装置或组件进行调整。例如，步骤904可以包括通过传动装置720调整切片板组件710，从而决定所述切片板710-1和切片板710-2之间开口的宽度。步骤904也可以包括通过转动装置830调整转筒810的旋转角度以选取具有所需开口宽度的切片板820。步骤904还可以包括通过旋转导向光轴650以选择第一过滤器610和/或第二过滤器640的类型，所述过滤器类型可以包括体部过滤器、头部过滤器、婴儿过滤器等。
在完成步骤904中所述的调整操作后，可以在步骤906中产生一个调整完成信号，所述调整完成信号可以发送给处理模块310。在处理模块310接收到所述调整完成信号后，可以生成一个发射装置开启指令并发送给发射装置120。所述发射装置120接收到所述发射装置开启指令后，可以在步骤908中开始进行检测。在一些实施例中，步骤908可以与步骤308相对应。
图10a是根据本申请的一些实施例所示的示例准直器的结构示意图。准直器1000(相应于准直器130)可以用于对扫描系统100中发射装置120发出的射线进行过滤、阻挡及对其扇束宽度进行调整。准直器1000可以包括一个切片组件1010、一个支撑与防护组件1020和一个过滤组件1030(分别对应于图5中的切片组件530、支撑与防护组件510、过滤组件520)。其中，所述过滤组件1030和所述切片组件1010与所述支撑与防护组件1020可拆卸地连接。在一些实施例中，射线射入准直器1000后可以依次通过切片组件1010和过滤组件1030，其中，所述切片组件1010可以对所述射线的扇束宽度进行调整，而所述过滤组件1030可以通过其包括的不同过滤器对所述射线进行一种或多种类型的过滤。进一步地，所述扇束宽度的调整和过滤操作可以满足不同的扫描对象的扫描需求。
图10b是根据本申请的一些实施例所示的示例准直器的结构分解示意图。如图10b所示，准直器1000的切片组件1010、支撑与防护组件1020和过滤组件1030可以相互可拆卸地连接。在一些实施例中，支撑与防护组件1020可以为一个盒体结构，所述盒体结构具有一个上开口和一个侧开口。进一步地，所 述过滤组件1030可以从所述侧开口或上开口处安装于所述盒体结构中。例如，所述过滤组件1030可以从所述盒体结构的侧开口处可抽拉地安装于所述盒体结构中，而所述切片组件1010可以从所述盒体结构上开口处设置于所述盒体结构上并封闭所述盒体结构的上开口。通过图10b所示的所述切片组件1010、支撑与防护组件1020以及过滤组件1030的结构可以使各组件在结构上不产生相互干扰的同时，还能够通过过滤组件1030及切片组件1010外的防护板对射线起到辅助阻挡作用，并加强了支撑与防护组件1020的阻挡防护功能。进一步的，切片组件1010可以包括两块平行设置的切片板1040和1050、一个传动装置1060和一个支撑装置1070(所述切片板1040和1050、所述传动装置1060和所述支撑装置1070的具体结构可以参见图12a及相应描述)。
图11a是根据本申请的一些实施例所示的示例过滤组件的结构示意图。过滤组件1030可以与图6中的过滤组件600相对应。如图11a所示，过滤组件1030可以包括一个过滤器更换组件1105和一个过滤器滑动底座1110。在一些实施例中，所述过滤器更换组件1105与所述过滤器浮动底座1110可拆卸地连接。例如，过滤器浮动底座1110可抽拉地设置于支撑与防护组件1030的一侧。在一些实施例中，只需抽出过滤器浮动底座1110，整体地更换过滤器更换组件1105或单独更换其中的第一过滤器1145，即可实现不同的过滤需求。
图11b是根据本申请的一些实施例所示的示例过滤组件的结构分解示意图。如图11b所示，过滤组件1030的过滤器更换组件1105和过滤器浮动底座1110可拆卸地连接。进一步的，过滤器更换组件1105可以包括一个或多个第一过滤器1145，一个过滤器固定板1150和一个过滤器支架1140。所述第一过滤器1145可以通过所述过滤器支架1140固定连接在所述过滤器固定板1150上。在一些实施例中，所述一个或多个第一过滤器1145可以沿过滤器浮动底座1110移动的方向并排地设置。在一些实施例中，一个或多个第一过滤器1145可以包括具有不同参数的多种过滤器，如体部过滤器、头部过滤器、婴儿过滤器等。在一些实施例中，第一过滤器1145可以包括蝶型过滤器、平板型过滤器或这两种类型的过滤器的结合。
过滤器浮动底座1110可以包括一个或多个第二过滤器1135、一个导向光轴1115、一个直线轴承1120和一个底座1125。进一步地，所述直线轴 承1120和所述第二过滤器1135可以固定设置于底座1125上。所述导向光轴1115可以设置于直线轴承1120中。在一些实施例中，所述导向光轴1115可以进行旋转并能够通过自身的旋转带动所述底座1125沿其轴向进行移动。在一些实施例中，所述一个或多个第二过滤器1135可以沿导向光轴1115的轴向并排地设置。进一步地，所述一个或多个第二过滤器1135可以包括具有不同参数的多种过滤器，如体部过滤器、头部过滤器和婴儿过滤器。在一些实施例中，所述第二过滤器1135可以包括蝶型过滤器、平板型过滤器或这两种类型的过滤器的结合。在一些实施例中，所述过滤器浮动底座1110中的第二过滤器1135与所述过滤器更换组件1105中的第一过滤器1145的数量相同且类型和位置一一对应。例如，所述第二过滤器1135的数量可以为3个，所述第一过滤器1145的数量相对应的也为3个。例如，所述第二过滤器的类型可以为平板型头部过滤器，所述第一过滤器的类型相对应的也为平板型头部过滤器。在一些实施例中，发射装置120产生的射线在射入准直器1000(相应于准直器130)后可以依次经过第一过滤器1145及其对应的第二过滤器1135。进一步地，过滤器浮动底座1110还可以包括一个焦点测量板1130。所述焦点测量板1130可以固定设置于底座1125上。在一些实施例中，所述焦点测量板可以在扫描系统100进行图像校正时测量焦点的大小，从而提高扫描系统100的测量精度。
图12a是根据本申请的一些实施例所示的示例切片组件的结构示意图。切片组件1205可以与图7中的切片组件700相对应。如图12a所示，切片组件1205可以包括一个切片板组件1210、一个传动装置1215和一个支撑装置1220。其中，所述切片板组件1210与所述传动装置1215可以可拆卸地进行组装，并设置于所述支撑装置1220上。进一步地，所述切片板组件1210可以包括一个第一切片板组件1225和一个第二切片板组件1230。所述传动装置1215可以包括一个与第一切片板组件1225对应的第一传动装置1235和一个与第二切片板组件1230对应的第二传动装置1240。
进一步地，第一切片板组件1225可以包括一个第一切片支架1225-1和一个第一切片板1225-2，其中，所述第一切片板1225-2可以固定设置于第一切片支架1225-1上。第二切片板组件1230可以包括一个第二切片支架1230-1和 一个第二切片板1230-2，其中，所述第二切片板1230-2可以固定设置于第二切片支架1230-1上。在一些实施例中，第一切片板组件1225和第二切片板组件1230的结构可以相同。
进一步地，第一切片板1225-2和第二切片板1230-2之间可以有间隙并形成一个开口。在一些实施例中，可以通过控制所述开口的尺寸来控制穿过该开口的射线的宽度(例如射线的扇束宽度)。在一些实施例中，切片组件1210可以进一步包括一个第一定位块1245和一个第二定位块1250。其中，所述第一定位块1245可以固定设置于第一切片支架1225-1上，并与第一切片板1225-2沿Z轴方向进行排列，而所述第二定位块1250可以固定设置于第二切片支架1230-1上，并与所述第二切片板1230-2沿Z轴方向进行排列。在一些实施例中，第一定位块1245与第二定位块1250可以分别与第一切片板1225-2和第二切片板1230-2之间存在调整间隙。所述调整间隙可以在安装时使第一切片板1225-2和第二切片板1230-2与探测器140沿Z轴方向对准。
在一些实施例中，第一传动装置1235和第二传动装置1340的结构可以相同，并可分别独立地控制第一切片板组件1225和第二切片板组件1230在Z轴方向进行运动。进一步地，所述第一传动装置1235和第二传动装置1240可以包括丝杠螺母传动结构、直线轴承传动结构、涡轮蜗杆传动结构或齿轮齿条传动结构等中的一种或多种。在一些实施例中，所述第一传动装置1235可以包括一个设置于支撑装置1220上的第一滚珠丝杆1235-1以及一个与所述第一滚珠丝杆1235-1相配合的第一丝母座1235-2，其中，所述第一丝母座1235-2可以与第一切片支架1225-1固定连接。所述第二传动装置1240可以包括一个设置于所述支撑装置1220上的第二滚珠丝杆1240-1以及一个与所述第二滚珠丝杆1240-1相配合的第二丝母座1240-2，其中，所述第二丝母座1240-2可以与第二切片支架1235-1固定连接。
在一些实施例中，第一滚珠丝杆1235-1和第二滚珠丝杆1240-1上可以设有螺纹，而第一丝母座1235-2和第二丝母座1340-2可以设有螺纹孔，其中，所述螺纹孔与所述螺纹可以相互配合。在一些实施例中，第一传动装置1235和第二传动装置1240的结构可以将第一滚珠丝杆1235-1和第二滚珠丝杆1240-1的旋转运动转化成所述第一丝母座1235-2和所述第二丝母座1240-2的直线运 动。例如，在第一滚珠丝杆1235-1和第二滚珠丝杆1240-1旋转时，可以带动第一丝母座1235-2和第二丝母座1240-2沿Z轴方向直线运动，进而调整第一切片板1225-2和第二切片板1230-2之间的开口的大小。
在一些实施例中，第一切片支架1225-1和第二切片支架1230-1可以分别包括一个第一端和一个第二端，所述第一端和所述第二端相对设置，其中，第一丝母座1235-2可以与第一切片支架1225-1的第一端相连接，而第二丝母座1240-2可以与第二切片支架1230-1的第二端相连接。进一步地，第一切片支架1225-1可以连接第一切片板1225-2和第一传动装置1235，而第二切片支架1230-1可以连接第二切片板1230-2和第二传动装置1240。当第一传动装置1235和第二传动装置1240的结构改变时，可以仅改变第一切片支架1225-1和第二切片支架1230-1的结构而不用替换或改变第一切片板1225-2和第二切片板1230-2。当需要改变第一切片板1225-2和第二切片板1230-2的结构时(例如，开口形状、大小等)，可以仅改变或替换第一切片板1225-2和第二切片板1230-2，而不用改变第一传动装置1235和第二传动装置1240以及第一切片支架1225-1和第二切片支架1230-1的结构，由此可以提高切片装置的拓展性和重复利用性。
在一些实施例中，支撑装置1220可以为一个板状的中空结构，所述中空结构与第一切片板1225-2和第二切片板1230-2相对应的部分镂空。在一些实施例中，支撑装置1220的中空结构可以减少切片组件1205的重量，从而降低所述切片组件1205在扫描时的离心力。进一步地，所述切片装置1205的其他组件(例如，第一传动装置1235和/或第二传动装置1240)可以设置于所述支撑装置1220的中空部分中，以节省空间。在一些实施例中，第一切片板组件1225和第二切片板组件1230以及第一传动装置1235和第二传动装置1240可以设置于所述支撑装置1220上。该设置可以使得所述切片板组件1210和所述传动装置1215更方便地组装和拆卸，且在安装时较易对切片组件1205进行准确定位，从而实现切片组件1205与探测器140在Z轴方向上的精确对准。
支撑装置1220上可以设有一个第一直线导轨1255和一个第二直线导轨1260。进一步地，所述支撑装置1220可以设有一个与所述第一直线导轨1255相配合的第一滑块1265和一个与所述第二直线导轨1250相配合的第二滑块1270。在一些实施例中，所述第一滑块1265与所述第一切片支架 1225-1的第一端相连接，而所述第二滑块1270与所述第二切片支架1230-1的第二端相连接。在一些实施例中，所述直线导轨和滑块相配合的结构可以使得第一切片板组件1225和第二切片板组件1230沿所述直线导轨方向运动。
进一步地，支撑装置1220上可以设有相对设置的一个第一支撑座1275和一个第二支撑座1280。在一些实施例中，所述第一支撑座1275可以用于支撑第一滚珠丝杆1235-1。进一步地，所述第一支撑座1275可以包括三个沿Z轴方向依次排列的支撑板1275-1、1275-2和1275-3，所述三个支撑板1275-1、1275-2和1275-3设有可以容纳第一滚珠丝杆1235-1通过的容纳孔。第二支撑座1280可以用于支撑第二滚珠丝杆1240-1。进一步地，所述第二支撑座1280可以包括三个沿Z轴方向依次排列的支撑板1280-1、1280-2和1280-3，所述三个支撑板1280-1、1280-2和1280-3设有可以容纳第二滚珠丝杆1240-1通过的容纳孔。
在一些实施例中，切片组件1205可以进一步包括一个第一限位装置1285和一个第二限位装置1290。其中，所述第一限位装置1285可以用于判断第一切片支架1225-1是否回到一个特定的位置。在一些实施例中，所述特定的位置可以是一个起始零位。相应的，所述第二限位装置1290可以用于判断第二切片支架1230-1是否回到一个特定的位置。
在一些实施例中，第一限位装置1285可以包括一个第一光电触片1285-1和一个第一光电传感器1285-2。其中，所述第一光电触片1285-1与第一切片支架1225-1的一端相连(例如与第一切片支架1225-1的第二端固定连接)，而所述第一光电传感器1285-2设置于支撑装置1220上。相应地，第二限位装置1290可以包括一个第二光电触片1290-1和一个第二光电传感器1290-2。所述第二光电触片1290-1与第二切片支架1230-1的一端相连(例如与第二切片支架1230-1的第一端固定连接)，而所述第二光电传感器1290-2设置于支撑装置1220上。在一些实施例中，第一光电传感器1285-2和第二光电传感器1290-2分别与第一光电触片1285-1和第二光电触片1290-1相配合。相配合的光电传感器和光电触片可以判断与其连接的切片板组件1210的位置，从而判断和确认对所述开口的大小和位置。
在一些实施例中，第一切片支架1225-1的第一端可以与第一丝母座 1235-2和第一滑块1265固定连接，所述第一滑块1265和第一直线导轨1255可以位于所述第一丝母座1235-2的下方，第一切片支架1225-1的第二端可以与第一光电触片1285-1固定连接，而第一光电触片1285-1可以位于第二滚珠丝杆1240-1的下方。相对应的，第二切片支架1230-1的第二端可以与第二丝母座1240-2和第二滑块1275固定连接，所述第二滑块1275和第二直线导轨1260可以位于所述第二丝母座1240-2的下方，第二切片支架1230-1的第一端可以与第一光电触片1285-1固定连接，而第二光电触片1290-1可以位于第一滚珠丝杆1235-1的下方。图12a所示的结构利用了第一切片支架1225-1和第二切片支架1230-1相对两端(即第一端和第二端)之间的空间，可以使得切片组件1205的结构更紧凑，从而使得扫描系统100的整体体积较小。
在一些实施例中，切片装置1205可以进一步包括一个与第一传动装置1235连接的第一驱动装置(图中未示出)和一个与所述第二传动装置1240连接的第二驱动装置(图中未示出)。所述第一传动装置1235和所述第二传动装置1240可以分别与相应的所述第一驱动装置和所述第二驱动装置(图中未示出)一一相连，从而可以分别通过单个的驱动装置独立地控制单个切片板的运动，从而提高传动精度，并更方便控制第一切片板1225-2和第二切片板1230-2之间开口的位置和尺寸大小。
图12b是根据本申请的一些实施例所示的示例切片组件仰视结构示意图。如图所示，切片组件1205可以包括一个切片板组件1210、一个传动装置1215和一个支撑装置1220。进一步地，所述切片板组件1210可以包括一个第一切片板组件1225和一个第二切片板组件1230，所述传动装置1215可以包括一个与第一切片板组件1225对应的第一传动装置1235和一个与第二切片板组件1230对应的第二传动装置1240。切片组件1210可以进一步包括一个第一定位块1245和一个第二定位块1250。在一些实施例中，第一定位块1245与第二定位块1250可以分别与第一切片板1225-2和第二切片板1230-2之间存在调整间隙。所述调整间隙可以在安装时使第一切片板1225-2和第二切片板1230-2与探测器140沿Z轴方向快速对准。
图13a是根据本申请的一些实施例所示的示例切片组件的结构示意图。切 片组件1310可以与图8中的切片组件800相对应。如图13a所示，切片组件1310可以包括一个可转动的转筒1320、一个或多个具有开口的切片板1330、一个转动装置1340和一个支撑装置1350。传动装置1340可以包括一个电机1340-1和一个联轴器1340-2。其中，所述电机1340-1可以设置于所述支撑装置1350上，并可以通过所述联轴器1340-2与所述转筒1320的一端相连接。转筒1320可以绕所述电机1340-1的轴线进行转动。当切片板控制模块320接收到角度调整指令时，可以控制所述电机1340-1带动所述转筒1320进行转动直至达到指定角度。通过改变转筒1320的角度可以选取不同的切片板1330及相对应的通孔1360，从而实现对射线的扇束大小和位置的调整或修改。
支撑装置1350可以包括一个底座基板1350-1、一个前轴承支座1350-2和一个后轴承支座1350-3。其中，所述前轴承支座1350-2和所述后轴承支座1350-3可以固定设置于所述底座基板1350-1上。进一步地，转筒1320的两端可以分别与前轴承支座1350-2和后轴承支座1350-3相连接。通过底座基板1350-1、联轴器1340-2、前轴承支座1350-2和后轴承支座1350-3的相互连接及支撑，可以使得转筒1320的转动更为稳定，从而增加扫描系统100的工作精度。
图13b是根据本申请的一些实施例所示的示例转筒的结构示意图。转筒1320可以绕其轴线进行转动。在一些实施例中，所述转筒1320可以是一个柱体结构，所述柱体结构中可以开设有一个或多个通孔1360。进一步地，一个或多个切片板1330可以覆盖于所述柱体结构的侧表面上。。在一些实施例中，所述一个或多个通孔1360的大小和位置可以与所述一个或多个切片板1330的开口大小和位置相对应。在一些实施例中，所述一个或多个切片板1330的开口的大小可能与所述一个或多个通孔1360的大小不同，例如，所述一个或多个切片板1330的开口可以比所述一个或多个通孔1360小。进一步地，所述通孔1360的延伸方向可以垂直于所述切片板1330所在的平面。在一些实施例中，所述一个或多个通孔1360的位置互不重合，因此与所述一个或多个通孔1360相对应的一个或多个1330切片板的位置也互不重合，从而使得多个切片板1330在设置于所述转筒侧表面时不会相互重叠。在一些实施例中，转筒1320为一个多边形柱体，其周身可以具有两两相对的偶数个平面1380，其中相对的两个平面1380为一个平面组。进一步地，通孔1360和切片板1330的数量可以与所述平面组的 数量相同，其中，所述切片板1330可以分别设置于所述平面组中的任意一个平面上，而通孔1360可以分别连通与其对应的平面组中的两个平面1380。在一些实施例中，转筒1320可以是其他形状的柱体，如圆柱体等。
图13c是根据本申请的一些实施例所示的示例切片板的结构示意图。所述切片板1330可以为具有开口的平板，所述开口可以是长方形、长条形、椭圆形等。在一些实施例中，切片板1330可以与转筒1320可拆卸地连接，使得所述切片板1330可以较容易地更换或维修。在一些实施例中，切片板1330与转筒1320可以为一体成型式结构。在一些实施例中，所述一个或多个切片板1330的开口的形状和/或大小可以部分或全部不同，以满足不同的射线扇束大小和位置的调整需求。在一些实施例中，所述切片组件1310中可以包括转筒1320而不包括切片板1330，所述转筒1320的表面或整体可以起到所述切片板1330的前述功能。射线1370可以从转筒1320的一侧射入，通过所述通孔1360，从转筒1320相对的另一侧射出。
图13d是根据本申请的一些实施例所示的示例切片系统在射线入射时的剖面结构示意图。在一些实施例中，从位于柱体结构一侧的切片板1330入射的射线1370可以在穿过对应的通孔1360后从所述柱体结构相对的另一侧射出。进一步地，通过改变切片板1330和通孔1360的结构可以实现对射线的扇束大小和位置的调整。在一些实施例中，通过转动转筒1320可以使射线射入转筒1320周侧的不同的切片板1330中，从而实现所述对射线的扇束大小和位置的调整。
在一些实施例中，可以围绕所述多边形柱体的周身每隔一个平面1380设置一块切片板1330，即每两块切片板1330之间均相隔有一个不包括切片板1330的平面1380。该结构可以减少切片板1330和通孔1360的设置难度，同时也可以增加转筒1320转动时，切片板1330之间切换的精度。在一些实施例中，平面1380的数量为六个，平面组、切片板1330、通孔1360的数量为三个。

Claims (20)

  1. 一个准直器，包括：
    一个切片组件，所述切片组件包括：
    两个切片板，所述两个切片板之间形成开口；
    一个传动装置，所述传动装置用于控制所述两个切片板进行运动，所述开口的大小通过所述两个切片板的运动改变；以及
    一个支撑装置，其中，所述两个切片板和所述传动装置进行组装后，设置于所述支撑装置上。
  2. 权利要求1所述的准直器，所述支撑装置为板状镂空结构，其中，所述镂空部分与所述开口相对应地设置。
  3. 权利要求1所述的准直器，进一步包括一个过滤组件，所述过滤组件包括：
    一个过滤器更换组件；以及
    一个过滤器浮动底座，其中，所述过滤器更换组件可拆卸地设置于所述过滤器浮动底座上。
  4. 权利要求1所述的准直器，进一步包括一个支撑与防护组件，所述支撑与防护组件与所述切片组件和所述过滤组件相连接。
  5. 一个准直器，包括：
    一个切片组件，所述切片组件包括：
    一个能够绕其轴线转动的转筒，所述转筒的侧面开设有一个通孔，所述通孔供射线穿过。
  6. 权利要求5所述的准直器，进一步包括一个设置于所述转筒外侧的具有开口的切片板，其中，射线穿过所述开口，通过所述通孔后从与所述开口相对的一侧射出。
  7. 权利要求6所述的准直器，所述开口的形状为长条形、长方形、或椭圆形。
  8. 权利要求6所述的准直器，所述切片板为平板结构，所述通孔的延伸方向垂直于所述切片板所在的平面。
  9. 权利要求5所述的准直器，所述切片组件包括多个具有开口的切片板以及一个转筒，所述转筒开设有多个通孔，所述多个通孔的位置互不重合。
  10. 权利要求9所述的准直器，所述转筒为多边形柱体，其侧表面具有两两相对的多个平面，其中，相对的两个平面为一个平面组，所述通孔和所述切片板的数量与所述平面组的数量相同，每个所述切片板分别设置于每个所述平面组的两个平面中的任意一个平面上，每个所述通孔分别连通每个所述平面组中的两个平面。
  11. 权利要求5所述的准直器，进一步包括一个过滤组件，所述过滤组件包括：
    一个过滤器更换组件；以及
    一个过滤器浮动底座，其中，所述过滤器更换组件可拆卸地设置于所述过滤器浮动底座上。
  12. 权利要求5所述的准直器，进一步包括一个支撑与防护组件，所述支撑与防护组件与所述切片组件和所述过滤组件相连接。
  13. 一个准直器，包括：
    一个支撑与防护组件；
    一个过滤组件，所述过滤组件包括：
    一个过滤器更换组件，所述过滤器更换组件包括一个过滤器支架、一个过滤器固定板和一个或多个第一过滤器，其中，所述一个或多个第一过滤器通过所述过滤器固定板设置于所述过滤器支架上；以及
    一个过滤器浮动底座，其中，所述过滤器更换组件可拆卸地设置于所述过滤器浮动底座上；以及
    一个切片组件，其中，所述过滤组件和切片组件与所述支撑与防护组件可拆卸地连接。
  14. 权利要求13所述的准直器，所述支撑与防护组件为一个盒体结构，所述盒体结构具有一个上开口和一个侧开口，所述过滤组件从所述侧开口处设置于所述盒体结构中，所述切片组件从所述上开口处盖设于所述盒体结构上。
  15. 权利要求13所述的准直器，所述过滤器浮动底座包括一个导向光轴、一个直线轴承、一个底座和一个或多个第二过滤器，所述直线轴承和所述一个或多个第二过滤器设置于所述底座上，所述导向光轴设置于所述直线轴承中，其中，所述导向光轴可以旋转并带动所述底座沿所述导向光轴的轴向移动。
  16. 权利要求15所述的准直器，所述一个或多个第一过滤器与所述一个或多个第二过滤器的数量与类型相同且位置一一对应。
  17. 权利要求15所述的准直器，所述一个或多个第一过滤器和所述一个或多个第二过滤器为蝶型过滤器或平板过滤器。
  18. 权利要求15所述的准直器，所述一个或多个第一过滤器和所述一个或多个第二过滤器沿所述导向光轴的轴向依次设置。
  19. 权利要求13所述的准直器，所述切片组件包括:
    两个切片板，所述两个切片板之间形成开口；
    一个传动装置，所述传动装置用于控制所述两个切片板进行运动，所述开口的大小通过所述两个切片板的运动改变；以及
    一个支撑装置，其中，所述两个切片板和所述传动装置进行组装后，设置于所述支撑装置上。
  20. 权利要求13所述的准直器，所述切片组件包括:
    一个能够绕其轴线转动的转筒，所述转筒的侧面开设有一个通孔，所述通孔供射线穿过。
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US10799190B2 (en) * 2015-10-30 2020-10-13 Shanghai United Imaging Healthcare Co., Ltd. Collimator of a scanning system
US10117632B2 (en) * 2016-02-03 2018-11-06 Globus Medical, Inc. Portable medical imaging system with beam scanning collimator
CN109316199B (zh) * 2018-09-18 2022-06-28 上海联影医疗科技股份有限公司 一种准直器过滤组件、准直器及医疗设备
US11862357B2 (en) * 2020-10-21 2024-01-02 Illinois Tool Works Inc. Adjustable collimators and x-ray imaging systems including adjustable collimators
US11998372B2 (en) * 2022-02-02 2024-06-04 GE Precision Healthcare LLC Pre-patient collimator having a self-shielding design and additively manufactured components

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054041A (en) * 1990-03-19 1991-10-01 General Electric Company High precision x-ray collimator
US20100119033A1 (en) * 2008-11-12 2010-05-13 The Methodist Hospital Research Institute Intensity-modulated, cone-beam computed tomographic imaging system, methods, and apparatus
CN102467985A (zh) * 2010-11-15 2012-05-23 东软飞利浦医疗设备系统有限责任公司 一种x射线准直器
CN203016974U (zh) * 2012-12-24 2013-06-26 上海联影医疗科技有限公司 X射线ct设备及其滤过传动机构
CN103271747A (zh) * 2013-05-15 2013-09-04 东软飞利浦医疗设备系统有限责任公司 Ct机上切片装置及切换调整方法
CN205181365U (zh) * 2015-10-30 2016-04-27 上海联影医疗科技有限公司 用于ct扫描系统的切片装置及ct扫描系统
CN205433722U (zh) * 2015-12-25 2016-08-10 上海联影医疗科技有限公司 准直器
CN205514648U (zh) * 2015-12-25 2016-08-31 上海联影医疗科技有限公司 切片系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160847A (en) 1989-05-03 1992-11-03 The Parvus Corporation Dynamic multivane electron arc beam collimator
US8238522B2 (en) 2010-04-12 2012-08-07 Varian Medical Systems International Ag Filter changing assembly for filtering a radiation beam
US10799190B2 (en) * 2015-10-30 2020-10-13 Shanghai United Imaging Healthcare Co., Ltd. Collimator of a scanning system
US20180168524A1 (en) * 2016-12-15 2018-06-21 Controlrad Systems Inc. Compact interchangeable filters mechanism
US10849576B2 (en) * 2017-04-27 2020-12-01 Medtronic Navigation, Inc. Filter system and method for imaging a subject

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054041A (en) * 1990-03-19 1991-10-01 General Electric Company High precision x-ray collimator
US20100119033A1 (en) * 2008-11-12 2010-05-13 The Methodist Hospital Research Institute Intensity-modulated, cone-beam computed tomographic imaging system, methods, and apparatus
CN102467985A (zh) * 2010-11-15 2012-05-23 东软飞利浦医疗设备系统有限责任公司 一种x射线准直器
CN203016974U (zh) * 2012-12-24 2013-06-26 上海联影医疗科技有限公司 X射线ct设备及其滤过传动机构
CN103271747A (zh) * 2013-05-15 2013-09-04 东软飞利浦医疗设备系统有限责任公司 Ct机上切片装置及切换调整方法
CN205181365U (zh) * 2015-10-30 2016-04-27 上海联影医疗科技有限公司 用于ct扫描系统的切片装置及ct扫描系统
CN205433722U (zh) * 2015-12-25 2016-08-10 上海联影医疗科技有限公司 准直器
CN205514648U (zh) * 2015-12-25 2016-08-31 上海联影医疗科技有限公司 切片系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3369380A4 *

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