CN110811663B - Method, device, equipment and storage medium for multi-region scanning - Google Patents
Method, device, equipment and storage medium for multi-region scanning Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for multi-region scanning, wherein the method for multi-region scanning 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 dosages of at least two areas to be scanned, and determining a scanning dosage curve according to the scanning dosages of the at least two areas to be scanned; and scanning the at least two areas to be scanned according to the scanning dose curve. According to the technical scheme provided by the embodiment of the invention, the area to be scanned and the corresponding scanning dose are determined, and then a dose curve is determined according to the scanning doses of all the areas, so that scanning of a plurality of parts at one time is realized, 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 embodiment of the invention relates to the field of image processing, in particular to a multi-region scanning method, a device, equipment and a storage medium.
Background
Nowadays, CT (X-ray computed tomography, computed Tomography) is widely used for medical diagnosis due to its advantages such as high image resolution and fast scanning speed. The CT scanning system performs tomographic scanning by using X-rays, and before formally performing CT scanning, a scanning protocol needs to be set and dose parameters need to be set according to a scanning positioning image.
The image examination of emergency trauma patients is an important clinical application field of CT equipment, and the patients may be injured at a plurality of places and the illness state is critical, so that the scanning of a large range of multiple places needs to be completed 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, in the existing scanning method, exposure based on the same protocol can be realized only in one scanning, namely, only the same tube voltage can be adopted for scanning. When facing the joint scanning of a plurality of parts, the operation steps of the prior art are complex, the workflow is complex, and the efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for multi-region scanning, which can realize multi-organ combined scanning by adopting one-time scanning when realizing multi-region combined scanning, reduce the scanning dosage 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, the method including:
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 dosages of at least two areas to be scanned, and determining a scanning dosage curve according to the scanning dosages of the at least two areas to be scanned; and scanning the at least two areas to be scanned according to the scanning dose curve.
In a second aspect, an embodiment of the present invention further provides a device for multi-region scanning, where the device 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; the to-be-scanned area determining module is used for determining 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 determining the scanning doses of at least two areas to be scanned respectively, and determining a scanning dose curve according to the scanning doses of the at least two areas 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, including:
a display; one or more processors; a storage means for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the methods of multi-zone scanning provided by any of the embodiments of the present 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 for performing the method of multi-region scanning provided by any of the embodiments of the present invention.
According to the technical scheme, the to-be-scanned area of the scanning positioning image and the dose curve of each to-be-scanned area are determined, one scanning dose curve is determined according to the dose curve of each scanning area, the accuracy 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, so that a plurality of parts are scanned at one time, the repeated scanning of the overlapped area is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of a user are optimized, the scanning workflow is reduced, the time required by scanning is shortened, and the scanning efficiency is improved.
Drawings
FIG. 1 is a flow chart of a method of multi-region scanning in accordance with a first embodiment of the present invention;
FIG. 2 is a flow chart of a method of multi-region scanning in a second embodiment of the invention;
FIG. 2B is a schematic diagram of a scan reconstruction in accordance with a second embodiment of the present invention;
FIG. 2C is a schematic diagram of an adjustment area determination in a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a multi-region scanning device according to a third embodiment of the present invention;
fig. 4 is a schematic structural view of an apparatus according to a fourth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a method for multi-region scanning according to an embodiment of the present invention, where the method is applicable to multi-region joint scanning, and the method may be performed by a multi-region scanning apparatus, and specifically includes the following steps:
step 110, acquiring a scanning positioning image of the object to be scanned, and determining a scanning mode.
Wherein the scan scout image, also called scout image, is an image generated from CT scan data.
The positioning image is usually acquired by the following ways:
the bulb or the radiation emitting device is stationary 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 refers to the range of the scan to be performed, and is mainly determined by the portion to be scanned. The scan pattern referred to in any of the embodiments of the present invention pertains to a joint scan, i.e. it is determined by at least two locations to be scanned. By way of example, the scan pattern may be a thoracoabdominal scan, where the parts to be scanned are the chest and abdomen.
Optionally, determining the scan pattern includes two ways:
a first mode, receiving an input scan pattern;
and secondly, identifying an area of interest of the scanning positioning image, and determining a scanning mode according to the area of interest, wherein the area of interest comprises the area to be scanned.
Specifically, the scan pattern of the first mode may be a scan pattern input by an authorized user.
Where the region of interest refers to a region that may be a region to be scanned, it includes 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 identification algorithm.
Typically, the identified region of interest is not exactly identical to the region to be scanned, but may also include non-regions to be scanned, so that after the identifying step, it is also necessary to determine the region to be scanned or the scanning pattern from the identified region of interest.
Further, all the candidate scan patterns may be determined from the region of interest, and the scan pattern determined from the user input. It is also possible to determine the scanning mode from the object information to be scanned and the region of interest. The user input may be any selection operation, such as clicking, selecting, etc., and the embodiment of the present invention does not limit the form of the user input. The scan target information may be history case information of the scan target, inquiry information of the scan target information, or the like.
Further, the identifying the region of interest of the scan positioning image includes:
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 delineate the division result of the region of interest of the positioning image as a gold standard, select the positioning image set, part as the training set, part as the verification set, and the rest as the test set, for example, 70% as the training set, 15% as the verification set, and 15% as the test set. Training the training set by adopting a 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 meets the expectations or not on the test set.
Illustratively, if the region of interest determined by the identifying includes three, region a, region B, and region C, respectively, then by permutation and combination, the possible scan patterns include 4, AB, BC, AC, and ABC, respectively. The related operator selects the scanning mode from the scanning modes to be selected in the step 4 to be AB joint scanning.
Step 120, determining at least two areas to be scanned of the scan positioning image according to the scan mode.
Since the scan pattern includes the part to be scanned, i.e., the area to be scanned can be obtained after the scan pattern is determined.
For example, the scan mode is a combined scan of chest and abdomen, and the chest and abdomen corresponding to the scan mode is the area to be scanned.
And 130, respectively determining the scanning dosages of at least two areas to be scanned, and determining a scanning dosage curve according to the scanning dosages of the at least two 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 curve may be a curve varying along the scan direction or z-direction, consisting of the tube current values required for each scan section. By scanning the dose curve, the tube current values required for the individual portions of each scan portion can be intuitively derived.
And 140, scanning the at least two areas to be scanned according to the scanning dose curve.
According to the technical scheme, the to-be-scanned area of the scanning positioning image and the dose curve of each to-be-scanned area are determined, one scanning dose curve is determined according to the dose curve of each scanning area, the accuracy 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, so that a plurality of parts are scanned at one time, the repeated scanning of the overlapped area is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of a user are optimized, the scanning workflow is reduced, the time required by scanning is shortened, and the scanning efficiency is improved.
Example two
Fig. 2 is a flowchart of a multi-region scanning method provided by the second embodiment of the present invention, where the technical solution of the present embodiment is further refined and supplemented on the basis of the above technical solution, and optionally, the multi-region scanning method provided by the present embodiment further includes: and carrying out scanning reconstruction according to the region to be scanned, the demarcation position and the scanning dose curve.
As shown in fig. 2, the method for multi-region scanning provided by the embodiment of the invention includes:
step 210, acquiring a scan positioning image of an object to be scanned, and determining a scan mode.
Step 220, determining at least two areas to be scanned of the scan positioning image according to the scan mode.
And 230, dividing the scanning positioning image into areas to be scanned, and determining the demarcation position of each area to be scanned.
The demarcation position is the position of the demarcation of the adjacent area to be scanned.
Optionally, the scanning positioning image may be subjected to region division to be scanned through a human mode, and the scanning positioning image may also be subjected to region division to be scanned through a deep learning algorithm.
Optionally, the dividing the scanning positioning image into the areas to be scanned and determining the demarcation position of each area to be scanned 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 demarcation position of each area to be scanned; and determining the positioning frame and the demarcation position of each area to be scanned according to the user operation, the initial positioning frame and the initial demarcation position.
The user operation includes clicking, dragging, sliding, etc., and may be input operation by means of a keyboard, a mouse, a touch screen, etc., or voice operation. The technical solution of the embodiment of the present invention is not limited thereto.
The positioning frame and the demarcation position of each area to be scanned can be automatically identified, and the accuracy of area division is further improved and the effectiveness of the demarcation position is ensured through user operation such as modifying the range of the positioning frame and adjusting the position of the demarcation position.
Specifically, after determining the initial positioning frame and the initial demarcation position of each region to be scanned, whether the initial positioning frame and the initial demarcation position are qualified or not can be judged according to user input, if yes, the initial positioning frame and the initial demarcation position of the region of interest are the positioning frame and the demarcation position of the region of interest; if not, determining the positioning frame and the demarcation position of each interest area according to the user operation, the initial positioning frame and the initial demarcation position.
And 240, calculating attenuation information of each area to be scanned.
The attenuation information may include, among other things, an attenuation coefficient, an average value of the attenuation coefficient, or an average milliamp second. Specifically, the average attenuation coefficient or the average milliampere second of each scanning section of the area to be scanned can be obtained.
Optionally, the calculating attenuation information of the area 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 manually.
Optionally, the calculating attenuation information of the area 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 region to be scanned according to the reference model.
The size information can be determined by the projection value of the positioning image of the object to be scanned.
And 250, carrying out scanning reconstruction according to the region to be scanned and the demarcation position.
Specifically, the reconstruction sequence can be determined according to the region to be scanned; the reconstruction parameters can be determined based on the demarcation location and size information of each location within the scan range in the localized image.
Further, fig. 2B is a schematic diagram of scan reconstruction in the second embodiment of the present invention, as shown in fig. 2B, in the reconstruction process, the calculated attenuation information of the region to be scanned may be displayed corresponding to the reconstructed image. In the figure, the vertical 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.
Step 260, performing scanning dose modulation according to the demarcation location and the attenuation information to determine a scanning dose curve.
Optionally, the scanning dose modulation according to the demarcation position and the attenuation information includes:
calculating the tube current value of each scanning section of the area to be scanned according to the demarcation position and the attenuation information; and interpolating the tube current value to obtain a tube current modulation curve, and performing scanning dose modulation according to the tube current modulation curve.
Specifically, the tube current modulation curve of the region to be scanned is obtained by calculating the tube current value and interpolation of each scanning section of the region to be scanned, and the scanning dose can be obtained according to the tube current modulation curve of each region to be scanned. Further, a scan dose curve can be obtained by simply connecting the tube current modulation curves of the various regions to be scanned in the scan order. Further, the demarcation locations of two adjacent regions to be scanned can be fitted by curve fitting techniques to obtain a smooth, continuous and easily implemented scan dose curve.
Optionally, performing scanning dose modulation according to the demarcation location and the attenuation information to determine a scanning dose curve, including:
determining an initial dose curve of each region to be scanned according to attenuation information of each region to be scanned; determining an adjustment area according to the demarcation position; adjusting an adjustment dose curve of the adjustment area according to a set exponential function; and determining a scanning dose curve according to the adjustment 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 area may also be only the area where several discrete points or curves are located.
For example, as shown in fig. 2C, assume that the scan positioning image includes two regions of interest a and B, where a boundary C is located, an intersection point of the boundary C and the region of interest a is a, an intersection point of the boundary C and the region of interest B is B, an initial dose curve of the region of interest a is y1, and an initial dose curve of the region of interest B is y2. The adjustment area may be an area where a rectangle having a width equal to the boundary C and a side length of 10 scan sections is located, with the midpoint of the boundary C as the center, or the side length may be 6, 8, 12, 14 or another value.
The adjusting area is determined according to the demarcation position, and the demarcation position is taken as a starting point to respectively determine the parts which are required to be adjusted in the two regions of interest corresponding to the demarcation position. The adjustment region is generally a region having a symmetry axis on a horizontal line where the boundary position is located, and may be an asymmetric region.
The set exponential function may be an exponential function specified by a user, or may be an exponential function determined according to two initial dose curves corresponding to the adjustment region.
By determining the initial dose curves of the areas to be scanned, at least two initial dose curves can be obtained, the adjacent initial dose curves usually have break points at the demarcation positions, and by setting the adjustment areas and the set index functions, the adjacent initial dose curves can be fitted into a smooth and continuous curve, 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 adjustment dose curve and the initial dose curve, namely, connecting each initial dose curve and the adjustment dose curve sequentially according to the scanning direction, so as to obtain a continuous scanning dose curve.
Step 270, scanning the at least two regions to be scanned according to the scanning dose curve.
According to the technical scheme, the demarcation positions of the areas to be scanned are determined through area division, the attenuation information of each area to be scanned is calculated, scanning dose modulation is carried out according to the demarcation positions and the attenuation information, the dose modulation precision is improved, the characteristics of local fitting are better, and meanwhile 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; according to a scanning curve, a plurality of areas to be scanned are scanned, a plurality of parts are scanned at one time, multiple times of scanning of overlapped areas are avoided, and radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of a user are optimized, the scanning workflow is reduced, the time required by scanning is shortened, and the scanning efficiency is improved.
Example III
Fig. 3 is a schematic structural diagram of an apparatus for multi-region scanning according to a third embodiment of the present invention, where, as shown in fig. 3, the apparatus for multi-region scanning 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 scan mode determining module 310 is configured to acquire a scan positioning image of an object to be scanned, and determine a scan mode; a to-be-scanned area determining module 320, configured to determine at least two to-be-scanned areas of the scan positioning image according to the scanning mode; a dose curve determining module 330, configured to determine scan doses of at least two regions to be scanned, and determine a scan dose curve according to the scan doses of the at least two regions to be scanned; and the scanning module 340 is configured to scan the at least two regions to be scanned according to the scanning dose curve.
According to the technical scheme, the to-be-scanned area of the scanning positioning image and the dose curve of each to-be-scanned area are determined, one scanning dose curve is determined according to the dose curve of each scanning area, the accuracy 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, so that a plurality of parts are scanned at one time, the repeated scanning of the overlapped area is avoided, and the radiation dose received by a patient is effectively reduced. Meanwhile, the operation steps of a user are optimized, the scanning workflow is reduced, the time required by scanning is shortened, and the scanning efficiency is improved.
Optionally, the scan mode determining module 310 includes:
a positioning image acquisition unit for acquiring a scanning positioning image of an object to be scanned;
a first mode determining unit for receiving an input scan mode;
and the second mode determining unit is used for 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.
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 determination module 330 includes:
the area dividing unit is used for dividing the scanning positioning image into areas to be scanned and determining the demarcation position of each area to be scanned;
the attenuation information calculation unit is used for calculating the attenuation information of each area to be scanned;
and the dose curve determining unit is used for carrying out scanning dose modulation according to the demarcation 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 demarcation position of each area to be scanned;
and determining the positioning frame and the demarcation position of each area to be scanned according to the user operation, the initial positioning frame and the initial demarcation position.
Further, the dose curve determination unit is specifically configured to:
determining an initial dose curve of each region to be scanned according to attenuation information of each region to be scanned;
determining an adjustment area according to the demarcation position;
adjusting an adjustment dose curve of the adjustment area according to a set exponential function;
a scanning dose curve is determined based on 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 carrying out scanning reconstruction according to the to-be-scanned area and the demarcation position after calculating the attenuation information of each to-be-scanned area.
The compression device for the 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 the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention, and 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 device processors 410 may be one or more, with one processor 410 being taken as an example in fig. 4; the processor 410, memory 420, input means 430 and output means 440 in the device may be connected by a bus or other means, for example in fig. 4.
The memory 420 is used as a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method of multi-region scanning in the embodiment of the present invention (e.g., the scan pattern determining module 310, the region to be scanned determining module 320, the dose curve determining module 330, and the scanning module 340 in the apparatus of multi-region scanning). The processor 410 performs various functional applications of the device and data processing, i.e., the method of implementing the multi-region scanning described above, by running software programs, instructions and modules stored in the memory 420.
The memory 420 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal, etc. In addition, 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 the device via 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 entered numeric or character information and to generate key signal inputs related to user settings and function control of the device. The output 440 may include a display device such as a display screen.
Example five
A fifth inventive embodiment also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing 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 dosages of the at least two areas to be scanned, and determining a scanning dosage curve according to the scanning dosages of the at least two areas to be scanned;
and scanning the at least two areas to be scanned according to the scanning dose curve.
Of course, the storage medium containing computer executable instructions provided in the embodiments of the present invention is not limited to the above-described method operations, and may also perform the related operations in the multi-region scanning method provided in any embodiment of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art 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 (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
It should be noted that, in the embodiment of the apparatus for multi-area scanning, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. 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 numerous obvious changes, rearrangements and substitutions without departing from the scope of the present invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (6)
1. A method of multi-zone scanning, comprising:
acquiring a scanning positioning image of an object to be scanned, identifying an interested region of the scanning positioning image according to a neural network training model, and determining a scanning mode according to the interested region, wherein the interested region comprises the area to be scanned, and the neural network model trains a training set by adopting a Vnet neural network;
determining at least two areas to be scanned of the scanning positioning image according to the scanning mode;
dividing the scanning positioning image into areas to be scanned, and determining the demarcation position of each area to be scanned;
calculating attenuation information of each region to be scanned;
carrying out scanning reconstruction according to the region to be scanned and the demarcation position; wherein the order of reconstruction is determined according to the region to be scanned; the reconstruction parameters are determined according to the boundary positions and the size information of each part in the scanning range in the scanning positioning image;
performing scanning dose modulation according to the demarcation position and the attenuation information to determine a scanning dose curve;
and scanning the at least two areas to be scanned according to the scanning dose curve.
2. The method of claim 1, wherein the dividing the scan positioning image into the regions to be scanned and determining the boundary position of each region 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 demarcation position of each area to be scanned;
and determining the positioning frame and the demarcation position of each area to be scanned according to the user operation, the initial positioning frame and the initial demarcation position.
3. The method of claim 1, wherein performing a scanning dose modulation based on the demarcation location and the attenuation information to determine a scanning dose curve comprises:
determining an initial dose curve of each region to be scanned according to attenuation information of each region to be scanned;
determining an adjustment area according to the demarcation position;
adjusting an adjustment dose curve of the adjustment area according to a set exponential function;
a scanning dose curve is determined based on the adjusted dose curve and the initial dose curve.
4. An apparatus for multi-zone scanning, comprising:
the scanning mode determining module is used for acquiring a scanning positioning image of an object to be scanned, identifying an interested region of the scanning positioning image according to a neural network training model, and determining a scanning mode according to the interested region, wherein the interested region comprises the area to be scanned, and the neural network model adopts a Vnet neural network to train a training set;
the to-be-scanned area determining module is used for determining 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 dividing the scanning positioning image into areas to be scanned and determining the demarcation position of each area to be scanned; calculating attenuation information of each region to be scanned; performing scanning dose modulation according to the demarcation position and the attenuation information to determine a scanning dose curve;
the scanning reconstruction module is used for carrying out scanning reconstruction according to the to-be-scanned areas and the demarcation positions after calculating the attenuation information of each to-be-scanned area; wherein the order of reconstruction is determined according to the region to be scanned; the reconstruction parameters are determined according to the boundary positions and the size information of each part in the scanning range in the scanning positioning image;
and the scanning module is used for scanning the at least two areas to be scanned according to the scanning dose curve.
5. An apparatus, comprising:
a display;
one or more processors;
a storage means for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of multi-zone scanning of any of claims 1-3.
6. A storage medium containing computer executable instructions, which when executed by a computer processor are for performing the method of multi-region scanning of any of claims 1-3.
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