CN110811663A - Multi-region scanning method, device, equipment and storage medium - Google Patents
Multi-region scanning method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a multi-region scanning method, a device, equipment and a storage medium, wherein the multi-region scanning method comprises the following steps: acquiring a scanning positioning image of an object to be scanned, and determining a scanning mode; determining at least two areas to be scanned of the scanning positioning image according to the scanning mode; respectively determining the scanning doses of at least two regions to be scanned, and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned; and scanning the at least two regions to be scanned according to the scanning dose curve. According to the technical scheme of the embodiment of the invention, the region to be scanned and the corresponding scanning dose are determined, then a dose curve is determined according to the scanning dose of each region, and scanning is carried out according to the curve, so that a plurality of parts are scanned at one time, the scanning dose of a patient is reduced, the operation steps of a user are optimized, the scanning workflow is reduced, the scanning time is shortened, and the scanning efficiency is improved.
Description
Technical Field
The embodiments of the present invention relate to the field of image processing, and in particular, to a multi-region scanning method, apparatus, device, and storage medium.
Background
Nowadays, CT (Computed Tomography) is widely used for medical diagnosis due to its advantages such as high image resolution and high scanning speed. In the CT scanning system, tomography is performed by using X-rays, and before performing CT scanning formally, a scanning protocol needs to be set and dose parameters need to be set according to a scanning scout image.
The image examination of patients with emergency trauma is an important clinical application field of CT equipment, and such patients may suffer from multiple injuries and critical illness, and need to complete the scanning of multiple parts in a large range as soon as possible. The current clinical scanning protocols are classified based on different organs, and each protocol sets different scanning and reconstruction parameters according to the structural characteristics of different parts. Therefore, the existing scanning method can only perform exposure based on the same protocol in one scanning, that is, only can perform scanning by using the same tube voltage. When a plurality of parts are jointly scanned, the operation steps in the prior art are complex, the workflow is complex, and the efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a multi-region scanning method, a multi-region scanning device, a multi-region scanning equipment and a multi-region scanning storage medium, which can realize multi-organ combined scanning by adopting one-time scanning when multi-part combined scanning is realized, reduce the scanning dose of a patient, optimize the operation steps of a user, reduce the workflow, reduce the scanning time and improve the scanning efficiency.
In a first aspect, an embodiment of the present invention provides a method for multi-region scanning, where the method includes:
acquiring a scanning positioning image of an object to be scanned, and determining a scanning mode; determining at least two areas to be scanned of the scanning positioning image according to the scanning mode; respectively determining the scanning doses of at least two regions to be scanned, and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned; and scanning the at least two regions to be scanned according to the scanning dose curve.
In a second aspect, an embodiment of the present invention further provides an apparatus for multi-region scanning, where the apparatus includes:
the scanning mode determining module is used for acquiring a scanning positioning image of an object to be scanned and determining a scanning mode; a to-be-scanned area determining module, configured to determine at least two to-be-scanned areas of the scanning positioning image according to the scanning mode; the dose curve determining module is used for respectively determining the scanning doses of at least two regions to be scanned and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned; and the scanning module is used for scanning the at least two areas to be scanned according to the scanning dose curve.
In a third aspect, an embodiment of the present invention further provides an apparatus, where the apparatus includes:
a display; one or more processors; storage means for storing one or more programs; when executed by the one or more processors, cause the one or more processors to implement a method of multi-region scanning as provided by any of the embodiments of the invention.
In a fourth aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the method of multi-region scanning provided by any of the embodiments of the present invention.
According to the technical scheme of the embodiment of the invention, the areas to be scanned of the scanning positioning image and the dose curves of all the areas to be scanned are determined firstly, and one scanning dose curve is determined according to the dose curves of all the scanning areas, so that the precision of dose modulation is improved, and the imaging quality is improved; the scanning of a plurality of scanning areas is carried out according to the curve, a plurality of parts are scanned at one time, the scanning of multiple times of overlapping areas is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of the user are optimized, the scanning workflow is reduced, the time required by scanning is reduced, and the scanning efficiency is improved.
Drawings
FIG. 1 is a flowchart illustrating a multi-region scanning method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a multi-region scanning method according to a second embodiment of the present invention;
FIG. 2B is a diagram of a scan reconstruction according to a second embodiment of the present invention;
FIG. 2C is a diagram illustrating adjustment region determination according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a multi-region scanning apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus in the fourth 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 is to be further noted that, for the convenience of description, only a part of the structure relating to the present invention is shown in the drawings, not the whole structure.
Example one
Fig. 1 is a flowchart of a method of multi-region scanning according to an embodiment of the present invention, which is applicable to a multi-location joint scanning situation, and the method can be executed by a multi-region scanning apparatus, and specifically includes the following steps:
and step 110, acquiring a scanning positioning image of the object to be scanned, and determining a scanning mode.
The scan positioning image is also called positioning image, and is an image generated by CT scan data.
The positioning image is usually acquired by the following method:
the tube or the ray emitting device is static at a preset position and does not rotate, and the sickbed or the scanning bed moves in parallel along the scanning direction or the z direction during scanning.
The scan pattern is a range of a scan to be performed, and is mainly determined by a portion to be scanned. The scan pattern involved in any embodiment of the invention is a joint scan, i.e. it is determined by at least two parts to be scanned. Illustratively, the scan pattern may be a thoracoabdominal scan, where the parts to be scanned are the chest and abdomen.
Optionally, determining the scan mode includes two ways:
the method comprises the steps of firstly, receiving an input scanning mode;
and secondly, identifying an interested area of the scanning positioning image, and determining a scanning mode according to the interested area, wherein the interested area comprises the area to be scanned.
Specifically, the scan pattern of the first mode may be a scan pattern input by an authorized user.
The region of interest refers to a region that may be a region to be scanned, including all regions to be scanned. The region of interest identification may be performed using any identification algorithm, such as a deep learning algorithm, a neural network algorithm, a model matching algorithm, or other image feature-based identification algorithm. The embodiment of the invention does not limit the adopted recognition algorithm.
In general, the identified region of interest is not completely equivalent to the region to be scanned, and may include a region not to be scanned, so that after the identification step, the region to be scanned or the scanning mode needs to be determined according to the identified region of interest.
Further, all the scanning modes to be selected can be determined according to the region of interest, and the scanning modes are determined according to user input. It is also possible to determine the scanning mode from the information of the object to be scanned and the region of interest. The user input may be any selection operation, such as clicking, selecting, and the like, and the form of the user input is not limited in the embodiment of the present invention. The scan target information may be history case information of the scan target or inquiry information of the scan target information, or the like.
Further, the identifying the region of interest of the scan positioning image comprises:
and identifying the region of interest of the scanning positioning image according to a neural network training model, wherein the neural network model adopts a Vnet neural network to train a training set.
Specifically, the expert may draw the division result of the region of interest of the positioning image as the golden standard, select the positioning image set, use part of the positioning image set as the training set, use part of the positioning image set as the verification set, use the remaining part of the positioning image set as the test set, for example, 70% of the positioning image set is the training set, 15% of the positioning image set is the verification set, and 15% of the positioning image set is the test set. And (3) training the training set by adopting an Vet neural network, screening and confirming a neural network model according to the result of the verification set, and confirming whether the effect of the model is in accordance with the expectation on the test set.
Illustratively, if the determined region of interest includes three regions, region a, region B, and region C, respectively, by identifying, then by permutation and combination, the possible scan patterns include 4, AB union scan, BC union scan, AC union scan, and ABC union scan, respectively. And (4) selecting the scanning mode from the candidate scanning modes in the step (4) as AB joint scanning by the related operator.
And step 120, determining at least two areas to be scanned of the scanning positioning image according to the scanning mode.
Since the scanning mode includes the portion to be scanned, i.e. the region to be scanned, the region to be scanned can be obtained after the scanning mode is determined.
Illustratively, the scanning mode is chest-abdomen joint scanning, and the chest and the abdomen corresponding to the scanning mode are the areas to be scanned.
The scan dose may refer to a scan dose output by the radiation emitting device, a scan dose received by an object to be scanned, or a tube current value of the radiation emitting device. The scan dose profile may be a profile varying along the scan direction or z-direction and consisting of the tube current values required for each scan section. By scanning the dose curve, the tube current values required by the various parts of each scanning part can be intuitively obtained.
And 140, scanning the at least two areas to be scanned according to the scanning dose curve.
According to the technical scheme of the embodiment of the invention, the areas to be scanned of the scanning positioning image and the dose curves of all the areas to be scanned are determined firstly, and one scanning dose curve is determined according to the dose curves of all the scanning areas, so that the precision of dose modulation is improved, and the imaging quality is improved; the scanning of a plurality of scanning areas is carried out according to the curve, a plurality of parts are scanned at one time, the scanning of multiple times of overlapping areas is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of the user are optimized, the scanning workflow is reduced, the time required by scanning is reduced, and the scanning efficiency is improved.
Example two
Fig. 2 is a flowchart of a multi-region scanning method according to a second embodiment of the present invention, where the technical solution of this embodiment is further refined and supplemented based on the above technical solution, and optionally, the multi-region scanning method further includes: and carrying out scanning reconstruction according to the region to be scanned, the boundary position and the scanning dose curve.
As shown in fig. 2, the method for multi-region scanning according to the embodiment of the present invention includes:
And step 220, determining at least two areas to be scanned of the scanning positioning image according to the scanning mode.
And step 230, dividing the scanning positioning image into areas to be scanned, and determining the boundary position of each area to be scanned.
The boundary position is the position of the boundary of the adjacent to-be-scanned area.
Optionally, the scanning positioning image may be subjected to-be-scanned region division in an artificial mode, or the scanning positioning image may be subjected to-be-scanned region division in a deep learning algorithm.
Optionally, the dividing the to-be-scanned area of the scanning positioning image, and determining the boundary position of each to-be-scanned area includes:
dividing the scanning positioning image into areas to be scanned according to the scanning mode, and determining an initial positioning frame and an initial boundary position of each area to be scanned; and determining the positioning frame and the boundary position of each region to be scanned according to the user operation, the initial positioning frame and the initial boundary position.
The user operation includes clicking, dragging, sliding and the like, and may be input operation through a keyboard, a mouse, a touch screen or the like, or voice operation. The technical solution of the embodiment of the present invention is not limited to this.
The method has the advantages that the positioning frames and the boundary positions of the regions to be scanned can be automatically identified, and the accuracy of region division is further improved and the effectiveness of the boundary positions is ensured through user operation, such as modification of the range of the positioning frames, adjustment of the positions of the boundary positions and the like.
Specifically, after the initial positioning frame and the initial boundary position of each region to be scanned are determined, whether the initial positioning frame and the initial boundary position are qualified or not can be judged according to user input, if so, the initial positioning frame and the initial boundary position of the region of interest are the positioning frame and the boundary position of the region of interest; and if not, determining the positioning frame and the boundary position of each interest area according to the user operation, the initial positioning frame and the initial boundary position.
And 240, calculating attenuation information of each region to be scanned.
The attenuation information may include an attenuation coefficient, an average value of the attenuation coefficient, or an average milliampere-second, among others. Specifically, the attenuation coefficient may be an average attenuation coefficient or an average ma second of each scanning section of the region to be scanned.
Optionally, the calculating attenuation information of the region to be scanned includes: and calculating attenuation information of the region to be scanned according to a preset reference model.
The preset reference model may be determined according to a portion included in the region to be scanned of the positioning image, or determined by comprehensively considering the portion included in the region to be scanned and size information of the object to be scanned, or set by a human.
Optionally, the calculating attenuation information of the region to be scanned includes:
determining a reference model of the area to be scanned according to the size information of the object to be scanned; and calculating attenuation information of the area to be scanned according to the reference model.
Wherein the size information may be determined by projection values of a scout image of the object to be scanned.
And step 250, carrying out scanning reconstruction according to the region to be scanned and the boundary position.
Specifically, the reconstruction sequence can be determined according to the region to be scanned; and determining reconstruction parameters according to the boundary position and the size information of each part in the scanning range in the positioning image.
Further, fig. 2B is a schematic diagram of scanning reconstruction in the second embodiment of the present invention, and as shown in fig. 2B, in the reconstruction process, the calculated attenuation information of the region to be scanned may also be displayed in correspondence with the reconstructed image. In the figure, the longitudinal axis z of each scanning dose curve is the scanning direction of the positioning image, the positions of the two are in one-to-one correspondence, and the abscissa of the scanning dose curve is the average attenuation information of the scanning section at the position.
And step 260, carrying out scanning dose modulation according to the boundary position and the attenuation information so as to determine a scanning dose curve.
Optionally, performing scanning dose modulation according to the boundary position and the attenuation information, including:
calculating the tube current value of each scanning section of the region to be scanned according to the boundary position and the attenuation information; and interpolating the tube current value to obtain a tube current modulation curve, and modulating the scanning dose according to the tube current modulation curve.
Specifically, a tube current modulation curve of the region to be scanned is obtained by calculating a tube current value of each scanning section of the region to be scanned and interpolating, and the scanning dose can be obtained according to the tube current modulation curve of each region to be scanned. Further, a scanning dose curve can be obtained by simply connecting the tube current modulation curves of the regions to be scanned in the scanning order. Further, the boundary position of two adjacent regions to be scanned can be fitted by a curve fitting technology to obtain a smooth, continuous and easily realized scanning dose curve.
Optionally, performing scanning dose modulation according to the boundary position and the attenuation information to determine a scanning dose curve, including:
determining an initial dose curve of each region to be scanned according to the attenuation information of each region to be scanned; determining an adjusting area according to the boundary position; adjusting the adjustment dose curve of the adjustment region according to a set exponential function; determining a scan dose curve from the adjusted dose curve and the initial dose curve.
The adjustment area may be a square area, such as a square or rectangle, or may be a regular shape, such as a circle, an ellipse, or an irregular shape. The adjustment region may also be the region in which only a few discrete points or curves are located.
Illustratively, as shown in fig. 2C, it is assumed that the scan positioning image includes two regions of interest a and B, the boundary position of which is the position of boundary C, the intersection point of boundary C with region of interest a is a, the intersection point with region of interest B is B, the initial dose curve of region of interest a is y1, and the initial dose curve of region of interest B is y 2. The adjustment region may be a region where a rectangle having a width equal to the width of the boundary C and a side length of 10 scan sections is located, centered at the midpoint of the boundary C, and the side length may be 6, 8, 12, 14 or other values.
The adjusting area is determined according to the dividing position, and the parts which need to be adjusted in the two interested areas corresponding to the dividing position are respectively determined by taking the dividing position as a starting point. The adjustment region may be a region having a horizontal line where the boundary position is located as a symmetry axis, or may be an asymmetric region.
The set exponential function may be an exponential function specified by a user, or an exponential function determined according to two initial dose curves corresponding to the adjustment region.
By determining the initial dose curves of the regions to be scanned, at least two initial dose curves can be obtained, the adjacent initial dose curves usually have breakpoints at the dividing positions, and the adjacent initial dose curves can be fitted into a smooth and continuous curve by setting the adjusting regions and setting the exponential function, so that the control of the dose is easier to realize, and the requirements on related equipment are reduced.
And determining a scanning dose curve according to the adjusted dose curve and the initial dose curve, specifically, sequentially connecting each initial dose curve and the adjusted dose curve according to the scanning direction to obtain a continuous scanning dose curve.
And 270, scanning the at least two areas to be scanned according to the scanning dose curve.
According to the technical scheme of the embodiment of the invention, the boundary position of the region to be scanned is determined through region division, the attenuation information of each region to be scanned is calculated, and the scanning dose is modulated according to the boundary position and the attenuation information, so that the dose modulation precision is improved, the local characteristic is better fitted, and the dose received by a patient is reduced; scanning reconstruction is carried out according to the division result, so that the reconstruction steps are simplified, and the reconstruction precision is improved; a plurality of areas to be scanned are scanned according to a scanning curve, so that a plurality of parts are scanned at one time, multiple times of scanning of overlapped areas is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of the user are optimized, the scanning workflow is reduced, the time required by scanning is reduced, and the scanning efficiency is improved.
EXAMPLE III
Fig. 3 is a schematic structural diagram of a multi-region scanning apparatus according to a third embodiment of the present invention, as shown in fig. 3, the multi-region scanning apparatus includes: a scan pattern determination module 310, a region to be scanned determination module 320, a dose curve determination module 330, and a scan module 340.
The scanning mode determining module 310 is configured to obtain a scanning positioning image of an object to be scanned, and determine a scanning mode; a to-be-scanned region determining module 320, configured to determine at least two to-be-scanned regions of the scanning positioning image according to the scanning mode; a dose curve determining module 330, configured to determine scanning doses of at least two regions to be scanned, respectively, and determine a scanning dose curve according to the scanning doses of the at least two regions to be scanned; a scanning module 340, configured to scan the at least two regions to be scanned according to the scanning dose curve.
According to the technical scheme of the embodiment of the invention, the areas to be scanned of the scanning positioning image and the dose curves of all the areas to be scanned are determined firstly, and one scanning dose curve is determined according to the dose curves of all the scanning areas, so that the precision of dose modulation is improved, and the imaging quality is improved; the scanning of a plurality of scanning areas is carried out according to the curve, a plurality of parts are scanned at one time, the scanning of multiple times of overlapping areas is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of the user are optimized, the scanning workflow is reduced, the time required by scanning is reduced, and the scanning efficiency is improved.
Optionally, the scan mode determining module 310 includes:
the positioning image acquisition unit is used for acquiring a scanning positioning image of an object to be scanned;
a first mode determination unit for receiving an input scan mode;
and the second mode determining unit is used for identifying an interested area of the scanning positioning image and determining a scanning mode according to the interested area, wherein the interested area comprises the area to be scanned.
Further, the second mode determining unit is specifically configured to:
and identifying the region of interest of the scanning positioning image according to a neural network training model, wherein the neural network model adopts a Vnet neural network to train a training set.
Optionally, the dose curve determining module 330 includes:
the area dividing unit is used for dividing the areas to be scanned of the scanning positioning image and determining the boundary position of each area to be scanned;
the attenuation information calculation unit is used for calculating attenuation information of each to-be-scanned area;
and the dose curve determining unit is used for carrying out scanning dose modulation according to the boundary position and the attenuation information so as to determine a scanning dose curve.
Further, the area dividing unit is specifically configured to:
dividing the scanning positioning image into areas to be scanned according to the scanning mode, and determining an initial positioning frame and an initial boundary position of each area to be scanned;
and determining the positioning frame and the boundary position of each region to be scanned according to the user operation, the initial positioning frame and the initial boundary position.
Further, the dose curve determination unit is specifically configured to:
determining an initial dose curve of each region to be scanned according to the attenuation information of each region to be scanned;
determining an adjusting area according to the boundary position;
adjusting the adjustment dose curve of the adjustment region according to a set exponential function;
and determining a scanning dose curve according to the adjusted dose curve and the initial dose curve.
Optionally, the apparatus for multi-region scanning further includes:
and the scanning reconstruction module is used for scanning reconstruction according to the to-be-scanned area and the boundary position after calculating the attenuation information of each to-be-scanned area.
The compression device for scanning data provided by the embodiment of the invention can execute the multi-region scanning method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 4 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention, as shown in fig. 4, the apparatus includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of the device processors 410 may be one or more, and one processor 410 is taken as an example in fig. 4; the processor 410, the memory 420, the input device 430 and the output device 440 in the apparatus may be connected by a bus or other means, for example, in fig. 4.
The memory 420 serves as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the multi-region scanning method in the embodiment of the present invention (for example, the scanning mode determining module 310, the to-be-scanned region determining module 320, the dose curve determining module 330, and the scanning module 340 in the multi-region scanning apparatus). The processor 410 executes software programs, instructions and modules stored in the memory 420 to execute various functional applications of the device and data processing, i.e. to implement the multi-region scanning method.
The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to devices through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the apparatus. The output device 440 may include a display device such as a display screen.
EXAMPLE five
An embodiment of the present invention further provides a storage medium containing computer-executable instructions which, when executed by a computer processor, perform a method of multi-region scanning, the method comprising:
acquiring a scanning positioning image of an object to be scanned, and determining a scanning mode;
determining at least two areas to be scanned of the scanning positioning image according to the scanning mode;
respectively determining the scanning doses of the at least two regions to be scanned, and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned;
and scanning the at least two regions to be scanned according to the scanning dose curve.
Of course, the storage medium containing computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the method of multi-region scanning provided by any embodiments of the present invention.
From the above description of the embodiments, it is obvious for a person skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly 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, which 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 for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the multi-region scanning apparatus, the included units and modules are only 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.
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 without departing from the scope of the invention. Therefore, although the present invention has been described in more 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 method of multi-region scanning, comprising:
acquiring a scanning positioning image of an object to be scanned, and determining a scanning mode;
determining at least two areas to be scanned of the scanning positioning image according to the scanning mode;
respectively determining the scanning doses of the at least two regions to be scanned, and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned;
and scanning the at least two regions to be scanned according to the scanning dose curve.
2. The method of claim 1, wherein determining the scan pattern comprises:
receiving an input scanning mode;
or identifying a region of interest of the scanning positioning image, and determining a scanning mode according to the region of interest, wherein the region of interest comprises the region to be scanned.
3. The method of claim 2, wherein the identifying a region of interest of the scan positioning image comprises:
and identifying the region of interest of the scanning positioning image according to a neural network training model, wherein the neural network model adopts a Vnet neural network to train a training set.
4. The method according to claim 1, wherein the determining the scanning doses of at least two of the regions to be scanned respectively, and determining a scanning dose curve according to the scanning doses of the at least two of the regions to be scanned comprises:
dividing the scanning positioning image into areas to be scanned, and determining the boundary position of each area to be scanned;
calculating attenuation information of each region to be scanned;
and carrying out scanning dose modulation according to the boundary position and the attenuation information so as to determine a scanning dose curve.
5. The method according to claim 4, wherein the dividing the scanning positioning image into the areas to be scanned and determining the boundary position of each area to be scanned comprises:
dividing the scanning positioning image into areas to be scanned according to the scanning mode, and determining an initial positioning frame and an initial boundary position of each area to be scanned;
and determining the positioning frame and the boundary position of each region to be scanned according to the user operation, the initial positioning frame and the initial boundary position.
6. The method of claim 4, wherein performing scan dose modulation based on the demarcation location and attenuation information to determine a scan dose profile comprises:
determining an initial dose curve of each region to be scanned according to the attenuation information of each region to be scanned;
determining an adjusting area according to the boundary position;
adjusting the adjustment dose curve of the adjustment region according to a set exponential function;
and determining a scanning dose curve according to the adjusted dose curve and the initial dose curve.
7. The method according to claim 4, further comprising, after calculating attenuation information of each of the regions to be scanned:
and carrying out scanning reconstruction according to the region to be scanned and the boundary position.
8. An apparatus for multi-region scanning, comprising:
the scanning mode determining module is used for acquiring a scanning positioning image of an object to be scanned and determining a scanning mode;
a to-be-scanned area determining module, configured to determine at least two to-be-scanned areas of the scanning positioning image according to the scanning mode;
the dose curve determining module is used for respectively determining the scanning doses of at least two regions to be scanned and determining a scanning dose curve according to the scanning doses of the at least two regions to be scanned;
and the scanning module is used for scanning the at least two areas to be scanned according to the scanning dose curve.
9. An apparatus, comprising:
a display;
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of multi-region scanning as claimed in any one of claims 1-7.
10. A storage medium containing computer executable instructions for performing the method of multi-region scanning according to any of claims 1-7 when executed by a computer processor.
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