CN110974270A - Scanning control method, device, storage medium and scanning equipment - Google Patents
Scanning control method, device, storage medium and scanning equipment Download PDFInfo
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Abstract
The embodiment of the invention discloses a scanning control method, a scanning control device, a storage medium and scanning equipment. The method comprises the following steps: when a scanning bed is at a scanning position and a scanning trigger instruction is received, bed jitter data in a set time period is acquired, and the bed jitter data is converted into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning. Through the technical scheme, the scanning device is controlled to scan more accurately, and imaging motion artifacts or radiotherapy errors caused by shaking of a sickbed are weakened to a great extent.
Description
Technical Field
The embodiment of the invention relates to a medical scanning technology, in particular to a scanning control method, a scanning control device, a storage medium and scanning equipment.
Background
For scanning equipment such as medical imaging and radiotherapy, a patient needs to move a bed in the scanning process, and after the patient bed reaches a designated position, the scanning equipment triggers to start scanning. However, due to the rigidity problem caused by the material of the bed, the bed will shake and vibrate after moving to the designated position. If a corresponding imaging scan or radiotherapy scan is performed at this time, the reconstructed data from the imaging may cause severe motion artifacts due to the dithering of the portion or the radiotherapy may be inaccurate.
Disclosure of Invention
The embodiment of the invention provides a scanning control method, a scanning control device, a storage medium and scanning equipment, which are used for controlling the scanning equipment to scan more accurately and reducing imaging motion artifacts or radiotherapy errors caused by shaking of a sickbed to a great extent.
In a first aspect, an embodiment of the present invention provides a scan control method, including:
when a scanning bed is at a scanning position and a scanning trigger instruction is received, bed jitter data in a set time period is acquired, and the bed jitter data is converted into frequency data;
and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning.
In a second aspect, an embodiment of the present invention further provides a scan control apparatus, where the apparatus includes:
the bed jitter data acquisition module is used for acquiring bed jitter data in a set time period when the scanning bed is in a scanning position and receives a scanning trigger instruction, and converting the bed jitter data into frequency data;
and the scanning starting instruction generating module is used for generating a scanning starting instruction when the frequency data exceeds a preset frequency range so as to control the scanning equipment to start scanning.
In a third aspect, an embodiment of the present invention further provides a scanning device, where the scanning device includes: a radioactive source, a scan controller, a scanning bed and a sensor, wherein,
the sensor is arranged on the scanning bed and used for acquiring bed shaking data within a set time period when the scanning bed is at a scanning position and receives a scanning trigger instruction, and converting the bed shaking data into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction, and sending the scanning starting instruction to the scanning controller so that the scanning controller controls the radioactive source to emit scanning rays.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the scan control method provided in any embodiment of the present invention.
In the embodiment of the invention, when the scanning bed is at the scanning position and receives the scanning trigger instruction, bed jitter data in a set time period is obtained, and the bed jitter data is converted into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning. The shaking condition of the scanning bed is measured and analyzed in real time, so that the scanning exposure time meeting the clinical scanning requirement is measured, the scanning equipment is controlled to scan more accurately, and imaging motion artifacts or radiotherapy errors caused by shaking of the sickbed are reduced to a great extent.
Drawings
Fig. 1 is a flowchart of a scan control method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a scan control apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a scanning device in a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
The scanning control method provided by this embodiment is applicable to the scanning flow control of the scanning device that needs to move the scanning bed for scanning. The method may be performed by a scanning control device, which may be implemented by software and/or hardware, and may be integrated in an electronic device with data analysis function, such as a sensor, a scanning controller in a scanning device, a notebook computer or a desktop computer, and so on. Referring to fig. 1, the method of the present embodiment specifically includes the following steps:
s110, when the scanning bed is at the scanning position and receives a scanning trigger instruction, bed shaking data in a set time period are obtained, and the bed shaking data are converted into frequency data.
The scanning position refers to a position where the scanning bed is located when the scanning is performed. The scan trigger instruction refers to an instruction that triggers the entire scan procedure, for example, an instruction generated by a technician clicking a "start scan" button at a console. The set time period refers to a preset time period, and is a data processing unit for monitoring the shaking condition of the sickbed. The set time period can be used for analyzing and determining the shaking condition of the scanning bed, if the set time period is too small, the shaking condition of the scanning bed cannot be accurately determined due to too little data, and if the set time period is too large, the data accumulation is too much to be processed and analyzed, so that the starting time of formal scanning is prolonged, the waiting time of a scanning object is increased, and therefore, a reasonable set time period needs to be set. Bed jitter data refers to data that can characterize the jitter of a scanning bed, and the data type is related to the tool for measuring the jitter of the scanning bed, for example, the jitter of the scanning bed is measured by a vibration sensor or a displacement sensor, and then the bed jitter data is vibration data or displacement data.
Specifically, in order to reduce the influence of the couch shaking on the imaging or radiotherapy, in the embodiment of the present invention, the shaking amplitude of the couch is monitored in real time, and when the shaking amplitude is within the acceptable scanning range (i.e., the influence on the imaging or radiotherapy is acceptable), the timing (i.e., the exposure timing) for the formal scanning of the scanning device is determined, so as to trigger the scanning device to start scanning. Thus, the scan data obtained by the scanning device does not include the data in the bed-shaking stage, so that the reconstructed image obtained based on the scan data hardly includes the motion artifact caused by bed-shaking, and the radiotherapy result based on the scan data is more accurate.
Monitoring the shaking amplitude of the scanning bed is realized by arranging a sensor for measuring shaking, such as a vibration sensor or a displacement sensor, at a proper position of the scanning bed and analyzing the shaking data of the bed measured by the sensor. The bed-shaking data may be analyzed inside the sensor, in a scanning controller of a scanning device communicatively connected to the sensor, in a laptop or desktop computer communicatively connected to the sensor, or the like. In the embodiment of the present invention, the data analysis is performed inside the sensor, that is, the collection and processing of the bed shaking data of the scanning bed are processed in the sensor.
In specific implementation, in order to improve the data acquisition and processing efficiency of the sensor, in this embodiment, when the scanning bed is in the scanning position and the scanning device receives the scanning trigger instruction, the sensor is triggered to start acquiring bed shaking data of the scanning bed, and when the time for acquiring the data reaches a set time period, the bed shaking data in the set time period is processed. Since the dithering amplitude of the scanning bed is usually not very large, and the dithering frequency of the scanning bed is usually low frequency, in the data processing process in this embodiment, the bed dithering data is subjected to harmonic analysis through the board card of the sensor, and the data is converted into frequency data in a frequency domain. For example, the bed jitter data is first marked in a "time-amplitude" data form, and then the converted bed jitter data is subjected to, for example, fourier transform, and further converted into frequency data.
And S120, generating a scanning starting instruction when the frequency data exceeds a preset frequency range so as to control scanning equipment to start scanning.
The preset frequency range refers to a data range defined by a minimum frequency threshold and a maximum frequency threshold of preset frequency data, and is a frequency range when the shaking of the scanning bed is large. The preset frequency range may be set by measuring or simulating the dithering frequencies of the scanning bed for different materials and weights. The scan start instruction is an instruction to trigger the scanning apparatus to perform formal scanning (exposure).
Specifically, after the frequency data is generated at S110, the frequency data is compared with a preset frequency range. If the frequency data exceeds the preset frequency range, which indicates that the jitter amplitude of the scanning bed is close to the acceptable scanning range at the moment, a scanning starting instruction is generated and sent to a scanning controller of the scanning equipment, so that the scanning controller controls the scanning equipment to start formal scanning according to the scanning starting instruction.
Illustratively, after the converting the bed jitter data into frequency data, further comprising: and when the frequency data is in the preset frequency range, acquiring bed shaking data in the next set time period, and returning to execute the step of converting the bed shaking data into the frequency data.
Specifically, if the result of comparing the frequency data with the preset frequency range indicates that the frequency data is in the preset frequency range, which indicates that the scanning bed has a large jitter amplitude and is not suitable for starting scanning, the bed jitter data in the set time period is continuously obtained, and the step of converting the bed jitter data into the frequency data in S110 is returned to form a cyclic process until the obtained frequency data exceeds the preset frequency range.
According to the technical scheme of the embodiment, when the scanning bed is at the scanning position and receives a scanning trigger instruction, bed jitter data in a set time period is acquired, and the bed jitter data is converted into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning. The shaking condition of the scanning bed is measured and analyzed in real time, so that the scanning exposure time meeting the clinical scanning requirement is measured, the scanning equipment is controlled to scan more accurately, and imaging motion artifacts or radiotherapy errors caused by shaking of the sickbed are reduced to a great extent.
On the basis of the above technical solution, before the scanning bed is located at the scanning position and receives the scanning trigger command and bed jitter data within a set time period is acquired, the method further includes: and determining the set time period and the preset frequency range corresponding to the scanning bed.
Specifically, since the determination of the set time period and the preset frequency range takes a certain amount of time, in order to improve the processing efficiency of the bed swing data and improve the accuracy of the set time period and the preset frequency range, the set time period and the preset frequency range need to be determined before the bed swing data is acquired in the embodiment. The two data can be determined by acquiring data related to the scanning bed and performing model calculation on the data related to the scanning bed by using a pre-trained mathematical model; or the set time periods and preset frequency ranges of different scanning beds can be stored in a recording table or a configuration file, and when the two data are needed, the two data are directly read from corresponding storage positions.
For example, the determining the set time period and the preset frequency range corresponding to the scanning bed includes: and determining the set time period and the preset frequency range according to the material and the weight of the scanning bed and the weight range of the scanning object. Specifically, the different materials and weights of the scanning bed may have an influence on the shaking amplitude of the scanning bed, and the different body types and weights of the scanning objects using the scanning bed may also have an influence on the shaking amplitude of the scanning bed, and the speed of the variation of the shaking amplitude is related to the set time period, so that the set time period and the preset frequency range may be calculated and obtained according to the materials and weights of the scanning bed and the weight range of the scanning objects. The advantage of setting up like this is, can utilize the relevant data of the scanning bed that obtain in real time to confirm more accurately and set for the time cycle and predetermine the frequency range, and then further improve the accuracy of the generating opportunity of scanning start instruction, further reduce the influence of scanning bed shake to the scanning.
For example, the determining the set time period and the preset frequency range corresponding to the scanning bed includes: and acquiring the set time period and the preset frequency range from a configuration file. Specifically, in order to improve the determination efficiency of the set time period and the preset frequency range, the determination efficiency of the set time period and the preset frequency range adapted to the scanning bed may be directly read from the configuration file according to the information of the brand, the model, and the like of the scanning bed. Further, because the storage space of the sensor is limited, the configuration file can be stored in other devices, and the two data can be acquired from other devices before the sensor processes the data. And the sensor needs to send the generated scanning start instruction to the scanning control end of the scanning device, that is, the sensor and the scanning control end of the scanning device are communicated, so that the configuration file can be stored in the scanning control end, and the scanning control end sends the set time period adapted to the scanning bed and the preset frequency range to the sensor when receiving the scanning trigger instruction or the scanning bed related information sent by the sensor.
Example two
The present embodiment provides a scan control apparatus, referring to fig. 2, the apparatus specifically includes:
a bed jitter data obtaining module 210, configured to obtain bed jitter data within a set time period when a scanning bed is in a scanning position and a scanning trigger instruction is received, and convert the bed jitter data into frequency data;
a scanning start instruction generating module 220, configured to generate a scanning start instruction when the frequency data exceeds a preset frequency range, so as to control a scanning device to start scanning.
Optionally, on the basis of the foregoing apparatus, the apparatus further includes a loop execution module configured to:
and after the bed shaking data is converted into the frequency data, when the frequency data is in the preset frequency range, obtaining the bed shaking data in the next set time period, and returning to execute the step of converting the bed shaking data into the frequency data.
Optionally, on the basis of the apparatus, the apparatus further includes a preset frequency range determining module, configured to:
and when the scanning bed is at a scanning position and a scanning trigger instruction is received, determining the set time period and the preset frequency range corresponding to the scanning bed before bed shaking data in the set time period are acquired.
Further, the preset frequency range determining module is specifically configured to:
and determining the set time period and the preset frequency range according to the material and the weight of the scanning bed and the weight range of the scanning object.
Optionally, the preset frequency range determining module is specifically configured to:
and acquiring the set time period and the preset frequency range from a configuration file.
By the scanning control device of the second embodiment of the invention, the shaking condition of the scanning bed is measured and analyzed in real time, so that the scanning exposure time meeting the clinical scanning requirement is measured, the scanning equipment is controlled to scan more accurately, and imaging motion artifacts or radiotherapy errors caused by shaking of a sickbed are reduced to a great extent.
The scanning control device provided by the embodiment of the invention can execute the scanning control method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
It should be noted that, in the embodiment of the scan control apparatus, the included units and modules are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
EXAMPLE III
Referring to fig. 3, the present embodiment provides a scanning apparatus including: radiation source 310, scan controller 320, scanning bed 330, and sensors 340, wherein,
the sensor 340 is disposed on the scanning bed 330, and configured to acquire bed shaking data within a set time period when the scanning bed 330 is in a scanning position and receives a scanning trigger instruction, and convert the bed shaking data into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction, and sending the scanning starting instruction to the scanning controller 320, so that the scanning controller 320 controls the radiation source 310 to emit scanning rays.
Optionally, the sensor 340 is disposed directly below the head of the scanning bed 330.
Specifically, in order to more accurately monitor the jitter and the jitter amplitude of the scanning bed and further more accurately determine the exposure time of the scanning equipment, the setting position of the sensor is determined in a simulation mode according to the actual scanning condition of a pin die (a steel needle die body). When the sensor is disposed directly below the foremost end of the scanning bed 330, the monitoring effect is better. The sensor 340 is disposed directly below the head of the scanning bed 330 in the embodiment of the present invention.
Optionally, the sensor 340 is a shock sensor or a displacement sensor.
Optionally, the sensor 340 further comprises a loop execution module for:
and after the bed shaking data is converted into the frequency data, when the frequency data is in the preset frequency range, obtaining the bed shaking data in the next set time period, and returning to execute the step of converting the bed shaking data into the frequency data.
Optionally, the sensor 340 further comprises a preset frequency range determination module for:
and when the scanning bed is at a scanning position and a scanning trigger instruction is received, determining the set time period and the preset frequency range corresponding to the scanning bed before bed shaking data in the set time period are acquired.
Further, the preset frequency range determining module is specifically configured to:
and determining the set time period and the preset frequency range according to the material and the weight of the scanning bed and the weight range of the scanning object.
Optionally, the preset frequency range determining module is specifically configured to:
and acquiring the set time period and the preset frequency range from a configuration file.
Taking Computed Tomography (CT) scanning imaging as an example, the working process of the scanning device is as follows: first, the doctor or technician selects the corresponding scan protocol on the Exam interface at the console, then clicks on the "start scan" button, and then clicks on the bed move button on the CTBox according to the prompt, at which time the scanning bed 330 starts to move and reaches the designated position. At this time, the scanning bed 330 is in the scanning position, and the scanning device receives the scanning trigger command, the sensor 340 may be triggered to start to collect bed shaking data and analyze the bed shaking data, so as to determine whether the shaking of the scanning bed 330 is within the allowable range for imaging scanning at this time, that is, determine whether the frequency data exceeds the preset frequency range. If not, continuously and circularly acquiring the bed shaking data, and analyzing and judging the bed shaking data. If so, a scan start instruction is generated and transmitted to a Controller Area Network (CAN) interface, and further transmitted to a scan Controller (namely, a Gantry PC end, GPC for short) 320, which is installed with Software Gantry Software for controlling a CT rack, through a high-precision data link via the CAN interface. The scan controller 320 controls the radiation source 310 to emit scanning radiation according to the scan start command, and starts to perform formal imaging scan according to the scan protocol.
By the scanning equipment of the third embodiment of the invention, the shaking condition of the scanning bed is measured and analyzed in real time, so that the scanning exposure time meeting the clinical scanning requirement is measured, the scanning equipment is controlled to scan more accurately, and imaging motion artifacts or radiotherapy errors caused by shaking of a sickbed are reduced to a great extent.
Example four
The present embodiments provide a storage medium containing computer-executable instructions which, when executed by a computer processor, are operable to perform a scan control method, the method comprising:
when a scanning bed is at a scanning position and a scanning trigger instruction is received, bed jitter data in a set time period is acquired, and the bed jitter data is converted into frequency data;
and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the scan control method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, where the computer software product may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to enable an electronic device (which may be a personal computer, a server, or a network device) to execute the scan control method provided in the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A scan control method, comprising:
when a scanning bed is at a scanning position and a scanning trigger instruction is received, bed jitter data in a set time period is acquired, and the bed jitter data is converted into frequency data;
and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction to control scanning equipment to start scanning.
2. The method of claim 1, further comprising, after said converting the bed jitter data into frequency data:
and when the frequency data is in the preset frequency range, acquiring bed shaking data in the next set time period, and returning to execute the step of converting the bed shaking data into the frequency data.
3. The method of claim 1, further comprising, before acquiring the bed jitter data within a set time period when the scanning bed is in the scanning position and the scanning trigger command is received, the method further comprising:
and determining the set time period and the preset frequency range corresponding to the scanning bed.
4. The method of claim 3, wherein the determining the preset time period and the preset frequency range corresponding to the scanning bed comprises:
and determining the set time period and the preset frequency range according to the material and the weight of the scanning bed and the weight range of the scanning object.
5. The method of claim 3, wherein the determining the preset time period and the preset frequency range corresponding to the scanning bed comprises:
and acquiring the set time period and the preset frequency range from a configuration file.
6. A scan control apparatus, comprising:
the bed jitter data acquisition module is used for acquiring bed jitter data in a set time period when the scanning bed is in a scanning position and receives a scanning trigger instruction, and converting the bed jitter data into frequency data;
and the scanning starting instruction generating module is used for generating a scanning starting instruction when the frequency data exceeds a preset frequency range so as to control the scanning equipment to start scanning.
7. A scanning device, characterized by comprising: a radioactive source, a scan controller, a scanning bed and a sensor, wherein,
the sensor is arranged on the scanning bed and used for acquiring bed shaking data within a set time period when the scanning bed is at a scanning position and receives a scanning trigger instruction, and converting the bed shaking data into frequency data; and when the frequency data exceeds a preset frequency range, generating a scanning starting instruction, and sending the scanning starting instruction to the scanning controller so that the scanning controller controls the radioactive source to emit scanning rays.
8. The scanning device of claim 7, wherein the sensor is disposed directly below a head of the scanning bed.
9. A scanning device according to claim 7, characterized in that the sensor is a vibration sensor or a displacement sensor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the scan control method according to any one of claims 1 to 5.
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| CN109602434A (en) * | 2018-03-09 | 2019-04-12 | 上海慈卫信息技术有限公司 | A kind of fetal in utero cranial image detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170325759A1 (en) * | 2016-05-09 | 2017-11-16 | Toshiba Medical Systems Corporation | X-ray ct apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20170325759A1 (en) * | 2016-05-09 | 2017-11-16 | Toshiba Medical Systems Corporation | X-ray ct apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602434A (en) * | 2018-03-09 | 2019-04-12 | 上海慈卫信息技术有限公司 | A kind of fetal in utero cranial image detection method |
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