WO2022116114A1 - Procédé et appareil de surveillance et support de stockage informatique - Google Patents

Procédé et appareil de surveillance et support de stockage informatique Download PDF

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Publication number
WO2022116114A1
WO2022116114A1 PCT/CN2020/133694 CN2020133694W WO2022116114A1 WO 2022116114 A1 WO2022116114 A1 WO 2022116114A1 CN 2020133694 W CN2020133694 W CN 2020133694W WO 2022116114 A1 WO2022116114 A1 WO 2022116114A1
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Prior art keywords
offset
target object
target
image
medical image
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PCT/CN2020/133694
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English (en)
Chinese (zh)
Inventor
闫浩
王永军
罗春
李金升
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西安大医集团股份有限公司
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Application filed by 西安大医集团股份有限公司 filed Critical 西安大医集团股份有限公司
Priority to PCT/CN2020/133694 priority Critical patent/WO2022116114A1/fr
Priority to CN202080107419.0A priority patent/CN116529756A/zh
Publication of WO2022116114A1 publication Critical patent/WO2022116114A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image

Definitions

  • the embodiments of the present application relate to the technical field of medical position monitoring, and in particular, to a monitoring method, a device, and a computer storage medium.
  • the medical images captured by the target object are used for monitoring.
  • it can be captured from different angles, and multiple medical images captured at different angles can be used for monitoring.
  • image registration two two-dimensional projection images of the target object are acquired at two different angles, and the two two-dimensional projection images are respectively and Computed Tomography (English: Computed Tomography, CT) images corresponding to angles.
  • Digitally reconstructed radiographs English: Digitally Reconstructured Radiographs, DRR projection images are registered to obtain two two-dimensional offsets, and then the three-dimensional offsets of the target object are calculated through these two two-dimensional offsets.
  • the target object can be imaged from different angles at the same time.
  • the two groups of imaging sources and imagers occupy a large space, which will reduce the treatment space; if the radiotherapy equipment is provided with one To form an image source and an imager, the target object needs to be imaged from different angles at different times. There is a time interval between the obtained images, which is poor in real-time and inaccurate.
  • one of the technical problems solved by the embodiments of the present application is to provide a monitoring method, device and computer storage medium to overcome the poor real-time performance of monitoring using a set of imaging sources and imagers in the prior art , the defect of lower accuracy.
  • an embodiment of the present application provides a monitoring method, including: acquiring a target medical image obtained by imaging a target object at a target angle; acquiring a reference image corresponding to the target object at the target angle; according to the reference image and the target medical image determining a first offset of the target object in the first direction and a second offset in the second direction, wherein the first direction is different from the second direction; according to the target object in the reference image and the target object in the target medical The zoom ratio in the image, which determines the third offset of the target object in a third direction perpendicular to the first and second directions.
  • an embodiment of the present application provides a monitoring device, including: a first acquisition module for acquiring a target medical image obtained by imaging a target object at a target angle; a second acquisition module for acquiring a target object at a target angle A reference image corresponding to the angle; an offset module is used to determine the first offset of the target object in the first direction and the second offset in the second direction according to the reference image and the target medical image, wherein the first offset The direction is different from the second direction; the offset module is also used to determine the target object in a third direction perpendicular to the first direction and the second direction according to the zoom ratio of the target object in the reference image and the target object in the target medical image the third offset.
  • an embodiment of the present application provides an electronic device, including: at least one processor;
  • a memory for storing at least one program; when the at least one program is executed by at least one processor, the at least one processor implements the method described in the first aspect.
  • an embodiment of the present application provides a non-volatile computer storage medium on which a computer program is stored, and when the program is executed by a processor, implements the method described in the first aspect.
  • the monitoring method, device, and computer storage medium of the embodiments of the present application acquire the target medical image obtained by imaging the target object at the target angle; obtain the reference image corresponding to the target object at the target angle; determine the target according to the reference image and the target medical image a first offset of the object in the first direction and a second offset in the second direction, wherein the first direction is different from the second direction; according to the target object in the reference image and the target object in the target medical image
  • the zoom ratio determines the third offset of the target object in the third direction perpendicular to the first direction and the second direction.
  • the three-dimensional offset can be obtained by performing single-angle imaging at one moment, and there is no need to perform multi-angle shooting at different moments. The real-time performance is better, and because there is no time interval, the accuracy is higher.
  • FIG. 1 is a flowchart of a monitoring method provided in Embodiment 1 of the present application.
  • FIG. 2 is a schematic diagram of an imaging effect provided in Embodiment 1 of the present application.
  • Embodiment 3 is a schematic diagram of another imaging effect provided by Embodiment 1 of the present application.
  • FIG. 4A is a schematic diagram of a rotation effect provided by Embodiment 1 of the present application.
  • FIG. 4B is a schematic diagram of a position transformation provided in Embodiment 1 of the present application.
  • FIG. 5 is a structural diagram of a monitoring device provided in Embodiment 2 of the present application.
  • FIG. 6 is a structural diagram of another monitoring device provided in Embodiment 2 of the present application.
  • FIG. 7 is a structural diagram of another monitoring device provided in Embodiment 2 of the present application.
  • FIG. 8 is a structural diagram of an electronic device according to Embodiment 3 of the present application.
  • Embodiment 1 of the present application provides a monitoring method, as shown in FIG. 1 , which is a flowchart of a monitoring method provided by Embodiment 1 of the present application, and the method includes the following steps:
  • Step 101 Acquire a target medical image obtained by imaging a target object at a target angle.
  • the target object is at least one, which can be the monitoring object of the monitoring method in this application.
  • the target object can be a tumor, or a gold label (gold label, that is, a metal marker) following the movement of the tumor, which can be implanted into the body to mark the tumor. location), body tissues (eg, diaphragm, bone) that follow tumor movement, etc. Because metal markers, diaphragms, bones, etc. are more obvious in the image, they are easy to observe and identify, which can make monitoring more accurate.
  • the target angle can be any angle of the gantry rotation.
  • the target medical image is a medical image obtained by imaging a target object at a target angle, and the medical image may be a two-dimensional projection image.
  • the target medical image can be obtained by imaging the imaging source and the imager.
  • the imaging source is disposed opposite the imager, the target object is located between the imaging source and the imager, the imaging source emits rays to the target object, and the rays pass through the target object and are received by the imager, thereby forming an image of the target object.
  • the imaging source can be a bulb, which can emit a cone beam
  • the imager can be a detector, such as a kV flat panel detector, which receives the kV cone beam emitted by the bulb; or, the imaging source can be a treatment head
  • the imager is an electronic portal imaging device (English: Electronic Portal Imaging Device, EPID), and the EPID includes a megavolt flat panel detector, which receives megavolt-level rays emitted by the treatment head.
  • acquiring the target medical image obtained by imaging the target object at the target angle includes: acquiring the target medical image obtained by imaging the target object at the target angle at preset time intervals. According to the preset time interval, the target medical image obtained by imaging the target object at the target angle can be acquired in real time, that is, the target medical image is acquired once at each preset time interval, and the real-time monitoring of the target object can be realized.
  • Step 102 Obtain a reference image corresponding to the target object at the target angle.
  • the reference image may be an image obtained by photographing the target object in advance, and the reference image is used for registration.
  • the reference image is a digital image reconstructed DRR image of the three-dimensional image in the treatment plan at the target angle, and the three-dimensional image in the treatment plan may be a CT image, an MR image, or the like.
  • the reference image may also be a DRR image at the target angle of the reconstructed three-dimensional image after the setup is completed.
  • the reconstructed 3D image after the placement can be obtained by performing 3D image reconstruction on multiple 2D images of the target object taken at multiple angles, such as cone beam CT images. It is an exemplary illustration, and does not mean that the present application is limited to this.
  • Step 103 Determine a first offset of the target object in the first direction and a second offset in the second direction according to the reference image and the target medical image.
  • the first direction and the second direction are different.
  • the first direction and the second direction may be located on the same plane, and the line where the first direction is located and the line where the second direction is located may be perpendicular or non-perpendicular to each other.
  • FIG. 2 which is a schematic diagram of an imaging effect provided by Embodiment 1 of the present application
  • the first offset and the second offset in the second direction including:
  • the first offset of the target object in the first direction and the second offset of the target object in the second direction are determined according to the direction and distance of the positional offset of the target object in the reference image and the target medical image.
  • the first direction and the second direction may be parallel to the reference plane, and the reference plane is a plane used for reference, which may be any plane.
  • the reference plane may be a plane perpendicular to the line connecting the center of the imaging source and the imager; for example, the target object is a tumor or a gold standard in the human body, the reference plane may be a plane bearing the human body, for example, the reference plane may be is the plane in which the upper surface of the treatment couch lies, or a plane parallel to the upper surface of the treatment couch.
  • the first direction and the second direction are parallel to the reference plane, and optionally, the first direction and the second direction may be perpendicular to each other.
  • the first direction and the second direction may be the positive directions of the X-axis and the Y-axis in the image coordinate system, respectively. It should be noted that both the first offset and the second offset are relative to the image coordinate system, and the XOY plane in the image coordinate system is parallel to the plane where the image is located, that is, parallel to the reference plane, or, the image The XOY plane in the coordinate system is the XOY plane.
  • the first offset and the second offset can be calculated by comparing the target medical image with the reference image.
  • the method further includes: determining the position of the target object according to the direction and distance of the offset of the reference point of the target object in the target medical image relative to the position of the reference point of the target object in the reference image.
  • the direction and distance of the offset can be noted that the reference point of the target object can be any point of the target object, for example, the reference point of the target object can be the center point of the target object; for another example, if the target object is small enough, the target object can be used as a reference point , of course, this is just an example.
  • Step 104 Determine a third offset of the target object in a third direction perpendicular to the first direction and the second direction according to the scaling ratio of the target object in the reference image and the target object in the target medical image.
  • the zoom ratio of the target object in the reference image and the target object in the target medical image determine the size of the target object in a third direction perpendicular to the first direction and the second direction.
  • the third offset including:
  • the observation point of the third offset in the three directions can be a point on the imaging source or a point on the treatment head, or a point on a multi-leaf grating.
  • the observation point can be the center of the imaging source, or the position of the treatment head.
  • the center position, or the center position of the multi-leaf grating, etc., are not limited in this application.
  • the preset distance is the distance from the observation point to the planned position
  • the planned position may be the position of the target object corresponding to the reference image, that is, the position of the target object when the imager acquires the reference image; the planned position is also the position of the target object.
  • It can be a planning plane parallel to the reference plane, the reference plane is a plane perpendicular to the line connecting the imaging source and the center of the imager, and the planning plane is the plane where the target object is located when the imager acquires the reference image.
  • the preset distance is the distance between the observation point and the plane where the imaging plate is located
  • the offset of the imaging of the target object in the target medical image in the virtual coordinate system can be calculated according to the preset distance and the zoom ratio
  • the offset can be directly used as the offset, or can be converted into the offset of the target object in the third direction.
  • FIG. 3 is a schematic diagram of another imaging effect provided by Embodiment 1 of the present application.
  • FIG. 3 takes the third direction as the upper direction as an example for illustration, that is, the upward direction perpendicular to the reference plane. If the target object Moving upward relative to the planned position, the target object is closer to the imaging source (observation point) than the planned position, and in the obtained target medical image, the target object will be larger than the target object in the reference image; if the target object is relatively large relative to the planned position When moving downward, the target object is farther from the imaging source (observation point) than the planned position, and in the obtained target medical image, the target object will be smaller than the target object in the reference image.
  • the scaling ratio is calculated, and the offset direction of the target object in the third direction can be determined according to the scaling ratio.
  • a coordinate system can be established for the space where the target object is located, the first direction is the positive direction of the x-axis, the second direction is the positive direction of the y-axis, the third direction is the positive direction of the z-axis, the x-axis and the y-axis are In the reference plane, that is, the plane where the x-axis and the y-axis are located is the reference plane, the reference plane is parallel to the plane where the detector is located, and the z-axis is perpendicular to the reference plane and parallel to the line connecting the imaging source and the center of the detector.
  • the zoom ratio may be the area of the target object in the target medical image divided by the area of the target object in the reference image. If the zoom ratio is greater than 1, it means that the target object moves upward, and the offset direction is the positive direction of the third direction. , if the zoom ratio is less than 1, it means that the target object moves downward, and the offset direction is the negative direction of the third direction. If the zoom ratio is equal to 1, it means that the target object is not offset in the third direction.
  • the area is only taken as an example for description, which does not mean that the present application is limited to this.
  • Other parameters may also be used to represent the size of the target object in the target medical image and the reference image.
  • the offset distance can also be calculated according to the zoom ratio and the preset distance.
  • the preset distance is the distance from the imaging source to the planning plane.
  • the planning plane is the plane where the target object at the planned position is located, and the plane is parallel to the reference plane.
  • Obtain the preset distance calculate the offset of the target object in the z-axis direction, that is, the offset distance.
  • the number of target objects may be one or more.
  • the area of the target object in the target medical image can be the area occupied by the target object in the target medical image, or it can be the area of the graph formed by multiple target objects in the target medical image.
  • the reference image is the same. It is not repeated here.
  • the target object may include at least one of metal markers and bones; the method further includes: determining a monitoring method using a voting mechanism according to the results of metal marker monitoring, the results of bone monitoring, and the results of combined monitoring of metal markers and bones.
  • the monitoring methods can include metal marker monitoring, bone monitoring, diaphragm monitoring, etc., and can also include any two or more combined detection methods. Using the voting mechanism to determine the monitoring method can make the monitoring effect better. Multiple devices can be used to calculate the confidence based on the results of metal marker monitoring, bone monitoring, and combined monitoring of metal markers and bones, and then vote according to the calculated confidence to select a monitoring method with high confidence.
  • this is only an exemplary description, and there may be various specific implementations of the voting mechanism, which are not limited in this application.
  • a metal marker when monitoring a tumor, can be set at the edge of the tumor, and the metal marker moves with the movement of the tumor, so as to monitor the location of the tumor; of course, the body tissue near the tumor can also be used for monitoring.
  • a thermoplastic film can be used for non-invasive positioning. More specifically, a metal marker can be attached to the body surface, and then a thermoplastic film can be attached, and whether the positioning is accurate can be determined according to the position of the metal marker.
  • a target object may correspond to a reference point; or, the reference point may also be a point on the target object.
  • determining the first offset in the first direction and the second offset in the second direction of the target object according to the reference image and the target medical image includes: according to at least two of the reference image and the target medical image The direction and distance of the position offset of the target object are determined, and the first offset amount of the target object in the first direction and the second offset amount of the target object in the second direction are determined.
  • the target object when the target object includes at least three, according to the zoom ratio of the target object in the reference image and the target object in the target medical image, including: from the target medical image and the reference image At least three target objects are segmented in the medical image; the scaling ratio of the target object is determined according to the area of the geometric shape formed by the at least three target objects in the reference image and the area of the geometric shape formed by the at least three target objects in the target medical image.
  • the geometric shape can be a polygon, and the number of target objects can be the number of sides of the geometric shape.
  • the resulting geometric shape is a triangle, and if there are four target objects, the resulting geometric shape is a quadrilateral; geometric shape It can also be a graph whose boundary contains curves, such as circles, sectors, etc.
  • an irregular graph can be simulated, and the edges of the irregular graph can be curves.
  • step 103 and step 104 are executed after step 102 in no particular order.
  • Step 103 may be executed before step 104 , may be executed later than step 104 , or may be executed simultaneously with step 104 .
  • the rotation offset may be further determined.
  • the method further includes: determining a rotation offset of the target object in at least one of the first direction, the second direction and the third direction according to the reference image and the target medical image.
  • the rotation of the target object in a certain direction may be the rotation of the target object with the line where the direction is located as the axis, for example, the XOY of the first direction and the second direction in the image coordinate system
  • the rotation offset of the target object in the XOY plane of the image coordinate system is the rotation offset of the target object in the third direction.
  • the rotation offset can be directly determined by the image of the target object in the image coordinate system.
  • the rotation angle centered on the coordinate origin in the XOY plane of .
  • determining the rotation offset of the target object in at least one of the first direction, the second direction and the third direction according to the reference image and the target medical image includes: according to at least two references of the target object The positional change of the point in the reference image and the target medical image determines the rotational offset of the target object within the reference plane.
  • FIG. 4A is a schematic diagram of a rotation effect provided by Embodiment 1 of the present application.
  • two reference points are shown, which are A and B in the target medical image, and A in the reference image.
  • ' and B' with the origin of the coordinates as the center, A' and B' can be obtained by rotating A and B, and the rotation offset ⁇ can be obtained by calculating with formula 1:
  • (x, y) is the coordinate of A
  • (x', y') is the coordinate of A'
  • (x, y) is the coordinate of B
  • (x', y') is the coordinate of B'.
  • determining the first offset in the first direction and the second offset in the second direction of the target object according to the reference image and the target medical image includes: according to at least three references of the target object The position change of the point in the reference image and the target medical image determines the first offset, the second offset and the rotation offset of the target object in the reference plane.
  • FIG. 4B is a schematic diagram of a position transformation provided in Embodiment 1 of the present application. In Fig. 4B, three reference points are shown, which are A, B and C in the target medical image, and A', B' and C' in the reference image.
  • (x, y) is the coordinate of the point in the target medical image
  • (x', y') is the coordinate of the corresponding point in the reference image
  • the coordinates of the three pairs of points AA', BB' and CC' are respectively
  • Substituting into formula 2 can calculate the rotation offset ⁇ , the first offset dx and the second offset dy.
  • this is only an exemplary description, which does not mean that the present application is limited thereto.
  • image guidance or calibration can also be performed.
  • two specific examples are listed for description. :
  • the method further includes: performing real-time image guidance on the target object according to the first offset, the second offset and the third offset of the target object. Because the first offset, the second offset and the third offset are calculated by using the target medical image and the target object obtained by performing single-angle imaging on the target object at one moment, the calculated first offset The first offset, the second offset and the third offset reflect the offset of the target object at this moment. There is no time interval, which is more accurate. Moreover, because it is a single-angle imaging, it can be used at any moment. The first offset, the second offset and the third offset are calculated in real time, and the real-time performance is better. Optionally, the first offset, the second offset and the third offset may also be calculated to obtain a six-dimensional offset.
  • performing real-time image guidance on the target object according to the first offset, the second offset and the third offset of the target object includes: according to the first offset and the second offset And the third offset adjusts the position of the treatment couch so that the position of the target object coincides with the planned position.
  • the actual physical coordinate system where the treatment couch is located is different from the image coordinate system where the first offset, the second offset, and the third offset are located, and the XOY plane of the actual physical coordinate system can be parallel.
  • the plane on the upper or lower surface of the treatment couch, or the XOY plane of the actual physical coordinate system can be the upper or lower surface of the treatment couch, and the Z-axis of the actual physical coordinate system can be a straight line perpendicular to the upper or lower surface of the treatment couch. Therefore, the first offset, the second offset and the third offset can be converted into the coordinate system first, and then adjusted. Adjusting the position of the treatment couch according to the first offset, the second offset and the third offset includes: according to the conversion relationship between the image coordinate system and the actual coordinate system, adjusting the first offset and the second offset And the third offset is calculated to obtain the actual offset of the treatment bed, and the position of the treatment bed is adjusted according to the actual offset.
  • the actual offset is the offset of the treatment couch in the physical coordinate system where the treatment couch is located, and there can be three actual offsets (including the first actual offset, the second actual offset and the third actual offset offset), respectively corresponding to the first offset, the second offset and the third offset. It should also be noted that it can be adjusted when any offset is not 0, or a preset range can be set for judgment. For example, the treatment can be adjusted according to the first offset, the second offset and the third offset.
  • the position of the bed includes adjusting the position of the treatment couch if at least one of the first offset, the second offset and the third offset is not within a corresponding preset range.
  • the first offset and the second offset can be determined according to the reference image and the target medical image, and the size of the target object in the reference image and the size of the target object in the target medical image can be determined according to The third offset is determined, and the three-dimensional offset can be obtained by performing single-angle imaging at one moment. It is not necessary to perform multi-angle shooting at different moments, and the real-time performance is better, and because there is no time interval, the accuracy is higher .
  • the monitoring device 20 includes: a first acquisition module 201 configured to acquire a target object at a target angle The target medical image obtained by imaging; the second acquisition module 202 is used to acquire the reference image corresponding to the target object at the target angle; the offset module 203 is used to determine the target object in the first direction according to the reference image and the target medical image. The first offset and the second offset in the second direction, wherein the first direction is different from the second direction; the offset module 203 is further configured to determine the difference between the target object in the reference image and the target object in the target medical image.
  • the scaling in determines the third offset of the target object in the third direction perpendicular to the first and second directions.
  • the offset module 203 is further configured to determine the first offset of the target object in the first direction according to the direction and distance of the offset of the position of the target object in the reference image and the target medical image, and the target object in the first The second offset in the two directions.
  • the offset module 203 is also used to determine the direction and distance of the target object position offset according to the direction and distance of the reference point position offset of the target object in the target medical image relative to the reference point position offset of the target object in the reference image. .
  • the offset module 203 is further configured to determine the zoom ratio of the target object according to the size of the target object in the reference image and the size of the target object in the target medical image; determine the target object according to the zoom ratio and the preset distance A third offset in a third direction perpendicular to the first and second directions.
  • the offset module 203 is configured to segment at least three target objects from the target medical image and the reference image; according to the area of the geometric shape formed by the at least three target objects in the reference image, and the The area of the geometric shape formed by the three target objects determines the scale of the target objects.
  • the offset module 203 is further configured to determine the rotation offset of the target object in at least one of the first direction, the second direction and the third direction according to the reference image and the target medical image.
  • the offset module 203 is configured to determine the rotation offset of the target object in the reference plane according to positional changes of at least two reference points of the target object in the reference image and the target medical image.
  • the offset module 203 is configured to determine the first offset, the second offset of the target object, and the reference The rotation offset in the plane.
  • the first acquisition module 201 is configured to acquire the target medical image obtained by imaging the target object at the target angle according to preset time intervals.
  • the reference image may be a DRR image reconstructed for the digital image of the three-dimensional image in the treatment plan at the target angle, or the reference image may be the DRR image of the reconstructed three-dimensional image at the target angle after the placement is completed.
  • the monitoring device 20 further includes an image guidance module 204 for performing a real-time image on the target object according to the first offset, the second offset and the third offset of the target object. guide.
  • the monitoring device 20 further includes a position adjustment module 205 for adjusting the position of the treatment couch according to the first offset, the second offset and the third offset, so that the target The position of the object coincides with the planned position.
  • the position adjustment module 205 is configured to adjust the position of the treatment couch when at least one of the first offset, the second offset and the third offset is not within a corresponding preset range.
  • the position adjustment module 205 is configured to calculate the first offset, the second offset and the third offset according to the conversion relationship between the image coordinate system and the actual coordinate system to obtain the actual offset of the treatment couch. Adjust the position of the treatment table according to the actual offset.
  • the target object includes at least one of metal markers and bones; as shown in FIG. 7 , the monitoring device 20 further includes a voting module 206 for monitoring results of metal markers, results of bone monitoring, and metal markers. The results of the combined monitoring of markers and bones, using a voting mechanism to determine the monitoring method.
  • the first offset and the second offset can be determined according to the reference image and the target medical image, and the size of the target object in the reference image and the size of the target object in the target medical image can be determined according to The third offset is determined, and the three-dimensional offset can be obtained by performing single-angle imaging at one moment. It is not necessary to perform multi-angle shooting at different moments, and the real-time performance is better, and because there is no time interval, the accuracy is higher .
  • Embodiment 3 of the present application provides an electronic device.
  • the electronic device 30 includes: at least one processor 302 ; and a memory 304 for storing at least one program ; When at least one program is executed by at least one processor 302, at least one processor 302 implements the method described in the first embodiment.
  • the processor 302 and the memory 304 may be connected through a bus 306 or other manners, and the connection through the bus 306 is taken as an example in FIG. 7 .
  • the memory 304 can be used to store non-volatile software programs, non-volatile computer-executable programs and modules. program instructions/modules.
  • the processor 302 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 304, that is, implementing the above method embodiments (the method for determining the touch position of the capacitive screen).
  • the memory 304 may include a stored program area and a stored data area, wherein the stored program area can store programs required to implement any monitoring method in this application; the stored data area can store data created by executing the monitoring method, and the like. Additionally, memory 304 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 embodiments, memory 304 may optionally include memory 304 located remotely from processor 302, and these remote memories 304 may be connected to processor 302 via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the above product can execute the method provided by the embodiments of the present application, and has functional modules and beneficial effects corresponding to the execution method.
  • the above product can execute the method provided by the embodiments of the present application, and has functional modules and beneficial effects corresponding to the execution method.
  • the first offset and the second offset can be determined according to the reference image and the target medical image, and the size of the target object in the reference image and the size of the target object in the target medical image can be determined according to The third offset is determined, and the three-dimensional offset can be obtained by performing single-angle imaging at one moment. It is not necessary to perform multi-angle shooting at different moments, and the real-time performance is better, and because there is no time interval, the accuracy is higher .
  • Embodiment 4 of the present application provides a non-volatile computer storage medium on which a computer program is stored. method described.
  • the first offset and the second offset can be determined according to the reference image and the target medical image, and the size of the target object in the reference image and the size of the target object in the target
  • the size in the medical image determines the third offset, and the three-dimensional offset can be obtained by performing single-angle imaging at one moment. It is not necessary to perform multi-angle shooting at different moments, and the real-time performance is better, and because there is no time interval , with higher accuracy.
  • a typical implementation device is a computer.
  • the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or A combination of any of these devices.
  • the application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects.
  • the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La présente invention concerne un procédé et un appareil de surveillance et un support de stockage informatique. Le procédé de surveillance consiste : à acquérir une image médicale cible obtenue en imageant un objet cible selon un angle cible (101) ; à acquérir une image de référence correspondant à l'objet cible selon l'angle cible (102) ; en fonction de l'image de référence et de l'image médicale cible, à déterminer un premier décalage de l'objet cible dans une première direction et un deuxième décalage de celui-ci dans une deuxième direction (103) ; et selon un rapport de mise à l'échelle de l'objet cible dans l'image de référence et un rapport de mise à l'échelle de l'objet cible dans l'image médicale cible, à déterminer un troisième décalage de l'objet cible dans une troisième direction qui est perpendiculaire à la première direction et à la deuxième direction (104). Un décalage tridimensionnel peut être obtenu simplement en réalisant une imagerie à un seul angle à un moment, et une photographie multi-angle n'a pas besoin d'être effectuée à différents moments, de sorte que la performance en temps réel est meilleure et que la précision est plus élevée en raison de l'absence d'un intervalle de temps.
PCT/CN2020/133694 2020-12-03 2020-12-03 Procédé et appareil de surveillance et support de stockage informatique WO2022116114A1 (fr)

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CN202080107419.0A CN116529756A (zh) 2020-12-03 2020-12-03 监测方法、装置及计算机存储介质

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