Data processing method applied to radiotherapy, and related apparatus
By performing 3D delineation of organ regions on a 3D delineation interface and then reversing the delineation to a 2D image, the problems of low delineation efficiency and low accuracy in radiotherapy are solved, and efficient and accurate delineation of complex organs is achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BEIJING BAHEAL GUOXIN MEDICAL TECHNOLOGY
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-02
AI Technical Summary
In radiotherapy, operators need to draw on multiple two-dimensional images, resulting in low drawing efficiency. Furthermore, the accuracy of two-dimensional drawing is low when the target area under CT or MR does not differ in density from the surrounding normal tissue, especially for organs with cavities and irregular structural shapes.
First, the organ region is delineated in 3D on the 3D delineation interface. Then, the 3D delineated region is de-analyzed onto multiple 2D images to generate an extended mesh that matches the thickness of the target organ. The 3D delineated region is then determined and de-analyzed onto multiple 2D images.
It improves delineation efficiency and accuracy, especially for organs with cavities and irregular structural areas, or for areas where the target area under CT or MR does not differ in density from the surrounding normal tissue, overcoming the difficulties of traditional two-dimensional delineation.
Smart Images
Figure CN2025124209_02072026_PF_FP_ABST
Abstract
Description
A data processing method and related device for radiotherapy
[0001] Cross-reference of related applications
[0002] This application claims priority to Chinese patent application No. 202411953406.1, filed on December 27, 2024, entitled “A data processing method and related apparatus for radiotherapy”, the disclosure of which is incorporated herein by reference. Technical Field
[0003] This application relates to the field of radiotherapy, and more specifically, to a data processing method and related apparatus for use in radiotherapy. Background Technology
[0004] Radiation therapy is a method of treating diseases using ionizing radiation. In the general process of radiation therapy, after the doctor provides a prescription and treatment plan, the operator needs to delineate the organs and tumor target areas to be treated based on the prescription and treatment plan, so that appropriate radiation therapy can be performed according to the delineated areas.
[0005] In related technologies, operators typically draw directly on two-dimensional images of the subject to be radiotherapy. However, in actual radiotherapy, there are usually multiple two-dimensional images corresponding to the subject, and the operator needs to draw each of these images one by one, resulting in low drawing efficiency. Furthermore, when the area to be radiotherapy is an organ with a cavity and an irregular shape, or when the target area shows no difference in density between the target area and the surrounding normal tissue under CT or MR, it is very difficult to draw the target area using traditional multiple two-dimensional images. Even if the target area is drawn by force, the accuracy will be very low. Summary of the Invention
[0006] To address the technical problems mentioned in related technologies, such as low delineation efficiency and the inability to directly delineate certain organs or parts in two dimensions or low accuracy in two-dimensional delineation, this application provides at least one data processing method and related apparatus for radiotherapy. The method involves first having the operator delineate a three-dimensional organ region in three dimensions, and then reversibly parsing the three-dimensional delineated region onto multiple two-dimensional images. This directly yields multiple two-dimensional delineated regions corresponding to the multiple two-dimensional images. Compared to performing multiple two-dimensional delineations on two-dimensional images, multiple two-dimensional delineated regions can be obtained through a single three-dimensional delineation, thereby improving delineation efficiency while ensuring accuracy.
[0007] In a first aspect, this application provides a data processing method for radiotherapy, comprising:
[0008] Acquire multiple two-dimensional images corresponding to the object to be radiotherapy;
[0009] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional drawing interface.
[0010] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, the three-dimensional organ region corresponding to the three-dimensional drawing operation is determined.
[0011] Based on multiple two-dimensional images and three-dimensional delineated regions, multiple two-dimensional delineated regions are determined that correspond one-to-one with the three-dimensional delineated regions and multiple two-dimensional images. These multiple two-dimensional delineated regions are used to perform radiotherapy on the subjects to be radiotreated.
[0012] In one possible implementation, in response to a user's 3D drawing operation on the 3D drawing interface, determining the 3D organ region corresponding to the 3D drawing operation includes:
[0013] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, determine the drawn mesh corresponding to the three-dimensional drawing operation in the original mesh corresponding to the three-dimensional organ region.
[0014] Generate an extended mesh whose outlined mesh matches the organ thickness corresponding to the selected organ;
[0015] The 3D delineation area is determined based on the containment area between the delineated mesh and the outer mesh.
[0016] In one possible implementation, generating an extended mesh whose outlined mesh matches the organ thickness corresponding to the selected organ includes:
[0017] Determine the projected boundary corresponding to the outlined grid;
[0018] Based on the projection boundary, generate the grid region corresponding to the outlined grid;
[0019] The grid region is moved along the normal direction of the drawn grid by a distance equal to the thickness of the organ corresponding to the selected organ, thus generating an expanded grid.
[0020] In one possible implementation, in response to a user's 3D drawing operation on the 3D drawing interface, determining the 3D organ region corresponding to the 3D drawing operation includes:
[0021] In response to multiple 3D drawing operations performed by the operator on the 3D drawing interface, the corresponding 3D drawing area in the 3D organ region is determined.
[0022] In one possible implementation, based on multiple two-dimensional images and a three-dimensional delineated region, multiple two-dimensional delineated regions are determined that correspond one-to-one with the multiple two-dimensional images, including:
[0023] For the i-th two-dimensional image among multiple two-dimensional images, a three-dimensional delineation region is cut along the z-axis plane of the i-th two-dimensional image to determine the two-dimensional delineation region corresponding to the i-th two-dimensional image, where i is a positive integer.
[0024] In one possible implementation, in response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional delineation interface, including:
[0025] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is automatically extracted and displayed on the three-dimensional drawing interface. The three-dimensional organ region is determined based on multiple two-dimensional images corresponding to the object to be radiotherapy.
[0026] Secondly, this application also provides a data processing device for radiotherapy, comprising:
[0027] The acquisition unit is used to acquire multiple two-dimensional images corresponding to the object to be radiotherapy;
[0028] The display unit is used to display the three-dimensional organ region corresponding to the selected organ on the three-dimensional drawing interface in response to the operator's organ selection operation.
[0029] The first determining unit is used to determine the three-dimensional delineation area corresponding to the three-dimensional delineation operation in the three-dimensional organ region in response to the operator's three-dimensional delineation operation on the three-dimensional delineation interface.
[0030] The second determining unit is used to determine multiple two-dimensional delineated regions that correspond one-to-one with the three-dimensional delineated regions based on multiple two-dimensional images and three-dimensional delineated regions. These multiple two-dimensional delineated regions are used for radiotherapy on the subject to be radiotreated.
[0031] Thirdly, this application also provides an electronic device, including: a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory via the bus, and when the machine-readable instructions are executed by the processor, the data processing method for radiotherapy provided in this application is executed.
[0032] Fourthly, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the data processing method for radiotherapy provided in this application.
[0033] Fifthly, this application also provides a computer program product, including a computer program that is executed by a processor to perform the data processing method for radiotherapy provided in this application.
[0034] In summary, this application provides a data processing method and related apparatus for radiotherapy, comprising: acquiring multiple two-dimensional images corresponding to a subject to be radiotherapy; displaying a three-dimensional organ region corresponding to the selected organ on a three-dimensional delineation interface in response to an operator's organ selection operation; determining a three-dimensional delineation region corresponding to the three-dimensional delineation operation in the three-dimensional organ region in response to the operator's three-dimensional delineation operation on the three-dimensional delineation interface; and determining multiple two-dimensional delineation regions that correspond one-to-one with the multiple two-dimensional images based on the multiple two-dimensional images and the three-dimensional delineation regions, wherein the multiple two-dimensional delineation regions are used for radiotherapy on the subject to be radiotherapy. The above method allows the operator to first delineate the three-dimensional organ region in three dimensions, and then reverse analyze the three-dimensional delineated region onto multiple two-dimensional images, thereby directly obtaining multiple two-dimensional delineated regions corresponding to multiple two-dimensional images. Compared with performing multiple two-dimensional delineations on two-dimensional images, multiple two-dimensional delineated regions can be obtained through a single three-dimensional delineation, thus improving delineation efficiency while ensuring the accuracy of the delineation. It also solves the problem of difficulty in two-dimensional delineation for organs with cavities and irregular structural shapes, or for tissues where the target area does not show a difference in density from the surrounding normal tissue under CT or MR.
[0035] Other advantages of this application will be explained in more detail in conjunction with the following description and figures.
[0036] It should be understood that the above description is merely an overview of the technical solution of this application, so as to provide a general understanding of the technical means of this application and to implement it in accordance with the contents of the specification. In order to make the above and other objects, features and advantages of this application more apparent and understandable, specific embodiments of this application are illustrated below. Attached Figure Description
[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. The accompanying drawings are incorporated in and constitute a part of this specification. These drawings illustrate embodiments conforming to this application and are used together with the specification to explain the technical solutions of this application. It should be understood that the drawings only illustrate certain embodiments of this application and should not be considered as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. Furthermore, the same reference numerals denote the same components throughout the drawings. In the drawings:
[0038] Figure 1 is a flowchart of a data processing method for radiotherapy provided in an embodiment of this application;
[0039] Figure 2 is a schematic diagram of acquiring multiple two-dimensional images according to an embodiment of this application;
[0040] Figure 3 is a schematic diagram of a three-dimensional organ region provided in an embodiment of this application;
[0041] Figure 4 is a schematic diagram of a three-dimensional delineation area provided in an embodiment of this application;
[0042] Figure 5 is a schematic diagram of a two-dimensional delineated area provided in an embodiment of this application;
[0043] Figure 6 is a schematic diagram of a data processing device for radiotherapy provided in an embodiment of this application. Detailed Implementation
[0044] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.
[0045] In the description of embodiments of this application, it should be understood that terms such as “comprising” or “having” are intended to indicate the presence of the disclosed features, figures, steps, behaviors, components, portions or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, figures, steps, behaviors, components, portions or combinations thereof.
[0046] Unless otherwise stated, " / " means "or". For example, A / B can mean A or B. In this article, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A alone, A and B at the same time, and B alone.
[0047] The terms "first," "second," etc., are used only for ease of description to distinguish identical or similar technical features and should not be construed as indicating or implying the relative importance or number of these technical features. Therefore, a feature defined by "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, the term "multiple" means two or more.
[0048] In related technologies, operators typically draw directly on two-dimensional images of the subject to be radiotherapy. However, in actual radiotherapy, there are usually multiple two-dimensional images corresponding to the subject, and the operator needs to draw each of these images one by one, resulting in low drawing efficiency. Furthermore, when the area to be radiotherapy is an organ with cavities and irregular structures or shapes, or when the target area shows no difference in density between the target area and the surrounding normal tissue under CT or MR, it is very difficult to draw the target area using traditional multiple two-dimensional images, and the accuracy is very low.
[0049] In view of this, this application provides a data processing method and related apparatus for radiotherapy. First, the operator performs a three-dimensional delineation of a three-dimensional organ region. Then, the three-dimensional delineated region is reverse-analyzed onto multiple two-dimensional images, thereby directly obtaining multiple two-dimensional delineated regions corresponding to multiple two-dimensional images. Compared with performing multiple two-dimensional delineations on two-dimensional images, multiple two-dimensional delineated regions can be obtained through a single three-dimensional delineation, thereby improving delineation efficiency while ensuring the accuracy of the delineation.
[0050] Preferably, the method of this application is particularly applicable to organs with cavities and irregularly shaped structural regions, such as the heart, kidneys, spleen, large blood vessels, and ganglia surrounding large blood vessels. Because organs with cavities and irregularly shaped structural regions are discontinuous on a two-dimensional cross-section, the target area cannot be directly displayed, making direct delineation on a two-dimensional image of the target organ extremely difficult and inaccurate. However, the method of this application overcomes the limitations of traditional two-dimensional image delineation by directly performing delineation operations on the three-dimensional structural interface of the target organ. Then, based on the delineated mesh, an extended mesh matching the thickness of the target organ is generated to determine the three-dimensional delineation area. Finally, the three-dimensional delineation area is inversely analyzed onto multiple two-dimensional images, directly obtaining multiple two-dimensional delineation areas corresponding to multiple two-dimensional images, thus improving the accuracy and efficiency of delineation.
[0051] Preferably, the method of the present invention is also particularly applicable to areas where the density difference between the target area and the surrounding normal tissue cannot be displayed under CT or MR imaging. This is because when there is no significant difference in density between the target area and the surrounding normal tissue, the boundary of the target area cannot be clearly displayed on the two-dimensional image, making it impossible to delineate it on the two-dimensional image. The method of the present invention delineates the target area that cannot be distinguished in two dimensions in a three-dimensional state, and then reverse analyzes it onto multiple two-dimensional images. This results in a highly accurate two-dimensional delineated target area and improves delineation efficiency.
[0052] The data processing method for radiotherapy provided in this application can be implemented using computer equipment, which can be a terminal device or a server. The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. Terminal devices include, but are not limited to, mobile phones, computers, smart voice interaction devices, smart home appliances, vehicle terminals, and aircraft. The terminal devices and servers can be directly or indirectly connected via wired or wireless communication, and this application does not impose any limitations on this connection.
[0053] The data processing method for radiotherapy provided in this application will be described below through method embodiments. As shown in Figure 1, Figure 1 is a flowchart of a data processing method for radiotherapy provided in an embodiment of this application. The aforementioned computer device can be a server. The method includes:
[0054] Obtain multiple two-dimensional images corresponding to the object to be radiotherapy.
[0055] Patients awaiting radiotherapy are those who require radiation therapy.
[0056] To enable radiotherapy treatment of patients, the server can acquire multiple two-dimensional images of the patient. In practical applications, these two-dimensional images can be computed tomography (CT) images, as shown in Figure 2. The server can import multiple CT images of the patient in DICOM format, with a slice thickness of less than 2 mm. A three-dimensional model of the patient is then constructed using these imported two-dimensional images. The specific number of images to be imported depends on the size of the patient requiring radiotherapy.
[0057] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional drawing interface.
[0058] Organ selection refers to the operator's selection of the organ requiring radiotherapy. The 3D delineation interface displays the 3D organ region for subsequent 3D delineation steps. The selected organ is the organ corresponding to the organ selection operation. The 3D organ region refers to the area of the selected organ in 3D space.
[0059] In this embodiment, the operator can perform an organ selection operation. In response to the organ selection operation, as shown in Figure 3, the server can display the three-dimensional organ region corresponding to the selected organ on the three-dimensional drawing interface so that the three-dimensional organ region can be drawn in three dimensions in subsequent steps. In practical applications, the selected organ can be the heart structure, including the atrium, ventricle, aorta, pulmonary artery, pulmonary vein, superior and inferior vena cava, and other organs of interest corresponding to radiotherapy.
[0060] In one possible implementation, in response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional delineation interface, including:
[0061] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is automatically extracted and displayed on the three-dimensional drawing interface. The three-dimensional organ region is determined based on multiple two-dimensional images corresponding to the object to be radiotherapy.
[0062] In this embodiment, for the organ selection operation, the server can automatically extract the three-dimensional organ region corresponding to the selected organ. Unlike manually extracting the three-dimensional organ region, automatic extraction can further ensure efficiency.
[0063] In response to the operator's 3D drawing operation on the 3D drawing interface, the 3D drawing area corresponding to the 3D drawing operation is determined in the 3D organ region.
[0064] 3D drawing operation refers to the drawing operation performed by the operator in the 3D drawing interface. In practical applications, the operator can perform corresponding 3D drawing operations in the 3D drawing interface through interactive tools similar to the 2D freehand pen.
[0065] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, as shown in Figure 4, the server can determine the three-dimensional drawing area in the three-dimensional organ region corresponding to the three-dimensional drawing operation. The three-dimensional drawing area refers to the drawing area in three-dimensional space in the three-dimensional organ region corresponding to the three-dimensional drawing operation.
[0066] In one possible implementation, in response to a user's 3D drawing operation on the 3D drawing interface, determining the 3D organ region corresponding to the 3D drawing operation includes:
[0067] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, determine the drawn mesh corresponding to the three-dimensional drawing operation in the original mesh corresponding to the three-dimensional organ region.
[0068] Generate an extended mesh that matches the thickness of the corresponding organ to the outlined mesh;
[0069] The 3D delineation area is determined based on the containment area between the delineated mesh and the outer mesh.
[0070] Specifically, the original mesh corresponding to the three-dimensional organ region refers to the mesh corresponding to the three-dimensional organ region. In practical applications, the original mesh can be a triangular mesh.
[0071] In response to the operator's 3D drawing operation on the 3D drawing interface, the server can determine the drawn mesh in the original mesh that corresponds to the 3D drawing operation. The drawn mesh refers to the mesh in the original mesh that corresponds to the 3D drawing operation.
[0072] After obtaining the delineated mesh, since the delineated mesh has no thickness and the thickness of different selected organs varies, for example, when the selected organ is the ventricle, the organ thickness is generally 2-3 mm on average, and may be 3-4 mm, in order to obtain the three-dimensional delineated area in three-dimensional space, the server can generate an extended mesh that matches the thickness of the selected organ to the delineated mesh. Then, based on the containment area between the delineated mesh and the extended mesh, the three-dimensional delineated area is determined.
[0073] In one possible implementation, generating an extended mesh whose outlined mesh matches the organ thickness corresponding to the selected organ includes:
[0074] Determine the projected boundary corresponding to the outlined grid;
[0075] Based on the projection boundary, generate the grid region corresponding to the outlined grid;
[0076] The grid region is moved along the normal direction of the drawn grid by a distance equal to the thickness of the organ corresponding to the selected organ, thus generating an expanded grid.
[0077] Specifically, the server can first determine the projection boundary corresponding to the outlined mesh. For example, the server can first determine the vertices and edges corresponding to the projection of the outlined mesh.
[0078] Based on the projection boundary, the server can generate the grid region corresponding to the outlined grid. In practical applications, the grid region can be a triangular grid patch.
[0079] After obtaining the grid region, the server can move the grid region along the normal direction of the drawn grid by a distance equal to the thickness of the organ corresponding to the selected organ, thus generating an expanded grid.
[0080] In one possible implementation, to ensure the accuracy of the 3D delineation, in response to the operator's 3D delineation operation on the 3D delineation interface, the 3D delineation area corresponding to the 3D delineation operation in the 3D organ region is determined, including:
[0081] In response to multiple 3D drawing operations performed by the operator on the 3D drawing interface, the corresponding 3D drawing area in the 3D organ region is determined.
[0082] Since it is difficult for an operator to complete a three-dimensional delineation in a single operation in practical applications, in this embodiment, the operator can complete the three-dimensional delineation of the object to be treated through multiple three-dimensional delineation operations, thereby ensuring the accuracy of the three-dimensional delineation area.
[0083] Based on multiple two-dimensional images and three-dimensional delineated regions, multiple two-dimensional delineated regions are determined that correspond one-to-one with the three-dimensional delineated regions and multiple two-dimensional images. These multiple two-dimensional delineated regions are used to perform radiotherapy on the subjects to be radiotreated.
[0084] After obtaining the 3D outlined region, the server can determine multiple 2D outlined regions that correspond one-to-one with the 3D outlined region and the corresponding 2D images, based on multiple 2D images and the 3D outlined region. The 2D outlined region refers to the outlined region corresponding to the 3D outlined region in the corresponding 2D image. In other words, the 3D outlined region is reverse-analyzed onto multiple 2D images, thus directly obtaining the multiple 2D outlined regions corresponding to the multiple 2D images.
[0085] It should be noted that by having the operator draw a 3D outline of a 3D organ region, and then reversibly analyzing the 3D outlined region onto multiple 2D images, multiple 2D outlined regions can be obtained with just one 3D outline compared to drawing multiple 2D outlines on a 2D image. This improves the efficiency of the outline while ensuring the accuracy of the outline.
[0086] In one possible implementation, based on multiple two-dimensional images and a three-dimensional delineated region, multiple two-dimensional delineated regions are determined that correspond one-to-one with the multiple two-dimensional images, including:
[0087] For the i-th two-dimensional image among multiple two-dimensional images, a three-dimensional delineation region is cut along the z-axis plane of the i-th two-dimensional image to determine the two-dimensional delineation region corresponding to the i-th two-dimensional image, where i is a positive integer.
[0088] Specifically, taking the i-th two-dimensional image among multiple two-dimensional images as an example, the i-th two-dimensional image refers to any one of the multiple two-dimensional images. The server can perform a cutting operation on the three-dimensional outlined area along the z-axis plane of the i-th two-dimensional image. The z-axis plane refers to the plane perpendicular to the z-axis. Through the cutting operation, the three-dimensional outlined area can be made to fall on the two-dimensional image, thereby determining the two-dimensional outlined area corresponding to the i-th two-dimensional image. As shown in Figure 5, the server can obtain the two-dimensional outlined area corresponding to one of the three CT images.
[0089] Therefore, this application provides a data processing method for radiotherapy, comprising: acquiring multiple two-dimensional images corresponding to a subject to be radiotherapy; constructing a three-dimensional model of the subject to be radiotherapy using the multiple two-dimensional images; displaying a three-dimensional organ region corresponding to the selected organ on a three-dimensional delineation interface in response to the operator's organ selection operation; determining a three-dimensional delineation region corresponding to the three-dimensional delineation operation in the three-dimensional organ region in response to the operator's three-dimensional delineation operation on the three-dimensional delineation interface; and determining multiple two-dimensional delineation regions that correspond one-to-one with the multiple two-dimensional images based on the multiple two-dimensional images and the three-dimensional delineation regions, wherein the multiple two-dimensional delineation regions are used for radiotherapy on the subject to be radiotherapy. The above method allows the operator to first delineate a three-dimensional organ region, and then reverse analyze the corresponding three-dimensional delineated region onto multiple two-dimensional images, thereby directly obtaining multiple two-dimensional delineated regions corresponding to multiple two-dimensional images. Compared with performing multiple two-dimensional delineations on two-dimensional images, multiple two-dimensional delineated regions can be obtained through a single three-dimensional delineation, thus improving delineation efficiency while ensuring accuracy. It also overcomes the difficulty of traditional two-dimensional image delineation methods in delineating organs with cavities and irregular shapes, or areas where the target area and surrounding normal tissue density do not differ under CT or MR, thereby improving the delineation accuracy of the above organs and tissues.
[0090] In the description of this specification, references to terms such as "some possible implementations," "some implementations," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that implementation or example is included in at least one implementation or example of this application, and the aforementioned terms do not necessarily refer to the same implementation or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more implementations or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different implementations or examples described in this specification, as well as the features of different implementations or examples.
[0091] The method flowcharts for embodiments of this application describe certain operations as different steps performed in a certain order. Such flowcharts are illustrative and not restrictive. Some steps described herein may be grouped together and performed in a single operation, or some steps may be divided into multiple sub-steps, and some steps may be performed in an order different from that shown herein. The various steps shown in the flowcharts may be implemented in any way by any circuit structure and / or tangible mechanism (e.g., by software running on a computer device, hardware (e.g., logic functions implemented by a processor or chip), and / or any combination thereof).
[0092] Those skilled in the art will understand that in the methods described in the above specific embodiments, the order in which the steps are written does not imply a strict execution order, and the specific execution order of each step should be determined by its function and possible internal logic.
[0093] Based on Figures 1-5 above, the following describes a data processing device for radiotherapy provided in this application through a device embodiment. As shown in Figure 6, the data processing device 600 for radiotherapy includes:
[0094] The acquisition unit 601 is used to acquire multiple two-dimensional images corresponding to the object to be radiotherapy;
[0095] The display unit 602 is used to display the three-dimensional organ region corresponding to the selected organ on the three-dimensional drawing interface in response to the operator's organ selection operation.
[0096] The first determining unit 603 is used to determine the three-dimensional outlining area in the three-dimensional organ region corresponding to the three-dimensional outlining operation in response to the operator's three-dimensional outlining operation on the three-dimensional outlining interface.
[0097] The second determining unit 604 is used to determine, based on the plurality of two-dimensional images and the three-dimensional delineated region, a plurality of two-dimensional delineated regions corresponding one-to-one with the plurality of two-dimensional images, wherein the plurality of two-dimensional delineated regions are used for radiotherapy on the subject to be radiotherapy.
[0098] In one possible implementation, the first determining unit 603 is used for:
[0099] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, determine the drawn mesh corresponding to the three-dimensional drawing operation in the original mesh corresponding to the three-dimensional organ region.
[0100] Generate an extended mesh whose outlined mesh matches the organ thickness corresponding to the selected organ;
[0101] The 3D delineation area is determined based on the containment area between the delineated mesh and the outer mesh.
[0102] In one possible implementation, the first determining unit 603 is used for:
[0103] Determine the projected boundary corresponding to the outlined grid;
[0104] Based on the projection boundary, generate the grid region corresponding to the outlined grid;
[0105] The grid region is moved along the normal direction of the drawn grid by a distance equal to the thickness of the organ corresponding to the selected organ, thus generating an expanded grid.
[0106] In one possible implementation, the first determining unit 603 is used for:
[0107] In response to multiple 3D drawing operations performed by the operator on the 3D drawing interface, the corresponding 3D drawing area in the 3D organ region is determined.
[0108] In one possible implementation, the second determining unit 604 is used for:
[0109] For the i-th two-dimensional image among multiple two-dimensional images, a three-dimensional delineation region is cut along the z-axis plane of the i-th two-dimensional image to determine the two-dimensional delineation region corresponding to the i-th two-dimensional image, where i is a positive integer.
[0110] In one possible implementation, the display unit 602 is used for:
[0111] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is automatically extracted and displayed on the three-dimensional drawing interface. The three-dimensional organ region is determined based on multiple two-dimensional images corresponding to the object to be radiotherapy.
[0112] It should be noted that the apparatus in the embodiments of this application can implement each process of the aforementioned method and achieve the same effect and function, which will not be elaborated here.
[0113] This application also provides an electronic device, including a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the following processing is performed:
[0114] Acquire multiple two-dimensional images corresponding to the object to be radiotherapy;
[0115] In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional drawing interface.
[0116] In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, the three-dimensional organ region corresponding to the three-dimensional drawing operation is determined.
[0117] Based on multiple two-dimensional images and three-dimensional delineated regions, multiple two-dimensional delineated regions are determined that correspond one-to-one with the three-dimensional delineated regions and multiple two-dimensional images. These multiple two-dimensional delineated regions are used to perform radiotherapy on the subjects to be radiotreated.
[0118] This application also provides a computer-readable storage medium storing a computer program. When a processor runs the computer program, it executes the steps of the data processing method for radiotherapy described in the above-described method embodiments. The storage medium can be a volatile or non-volatile computer-readable storage medium.
[0119] This application also provides a computer program product, including a computer program carrying program code. The program code includes instructions that can be used to execute the steps of the data processing method for radiotherapy described in the above method embodiments. For details, please refer to the above method embodiments, which will not be repeated here.
[0120] The aforementioned computer program product can be implemented through hardware, software, or a combination thereof. In one optional embodiment, the computer program product is specifically embodied in a computer storage medium; in another optional embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.
[0121] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the descriptions of the apparatus, device, and computer-readable storage medium embodiments are simplified because they are substantially similar to the method embodiments; relevant details can be found in the descriptions of the method embodiments.
[0122] The apparatus, device, and computer-readable storage medium provided in the embodiments of this application correspond one-to-one with the method. Therefore, the apparatus, device, and computer-readable storage medium also have similar beneficial technical effects as their corresponding methods. Since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the apparatus, device, and computer-readable storage medium will not be repeated here.
[0123] While the spirit and principles of this application have been described above with reference to several specific embodiments, it should be understood that this application is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined. This application is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims
1. A data processing method for radiotherapy, characterized in that, include: Acquire multiple two-dimensional images corresponding to the object to be radiotherapy; In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is displayed on the three-dimensional drawing interface. In response to the operator's three-dimensional drawing operation on the three-dimensional drawing interface, the three-dimensional organ region corresponding to the three-dimensional drawing operation is determined. Based on the multiple two-dimensional images and the three-dimensional delineated regions, multiple two-dimensional delineated regions are determined that correspond one-to-one with the multiple two-dimensional images. These multiple two-dimensional delineated regions are used for radiotherapy on the subject to be radiotreated.
2. The method according to claim 1, characterized in that, The step of determining the three-dimensional outline region corresponding to the three-dimensional outline operation in the three-dimensional organ region in response to the operator's three-dimensional outline operation on the three-dimensional outline interface includes: In response to the operator’s three-dimensional drawing operation on the three-dimensional drawing interface, the drawn grid corresponding to the three-dimensional drawing operation is determined in the original grid corresponding to the three-dimensional organ region. Generate an extended mesh whose outlined mesh matches the organ thickness corresponding to the selected organ; The three-dimensional delineation area is determined based on the containment area between the delineated mesh and the extended mesh.
3. The method according to claim 2, characterized in that, The step of generating an extended mesh that matches the thickness of the selected organ to the outlined mesh includes: Determine the projected boundary corresponding to the outlined grid; Based on the projection boundary, generate the grid region corresponding to the outlined grid; The grid region is moved along the normal direction of the outlined grid by a distance equal to the thickness of the organ corresponding to the selected organ, thereby generating the expanded grid.
4. The method according to claim 1, characterized in that, The step of determining the three-dimensional outline region corresponding to the three-dimensional outline operation in the three-dimensional organ region in response to the operator's three-dimensional outline operation on the three-dimensional outline interface includes: In response to multiple three-dimensional drawing operations performed by the operator on the three-dimensional drawing interface, the three-dimensional drawing area corresponding to the multiple three-dimensional drawing operations in the three-dimensional organ region is determined.
5. The method according to claim 1, characterized in that, The step of determining multiple two-dimensional delineated regions that correspond one-to-one with the multiple two-dimensional images based on the multiple two-dimensional images and the three-dimensional delineated regions includes: For the i-th two-dimensional image among the plurality of two-dimensional images, the three-dimensional delineation region is cut along the z-axis plane of the i-th two-dimensional image to determine the two-dimensional delineation region corresponding to the i-th two-dimensional image, where i is a positive integer.
6. The method according to claim 1, characterized in that, The process of responding to the operator's organ selection operation by displaying the three-dimensional organ region corresponding to the selected organ on the three-dimensional drawing interface includes: In response to the operator's organ selection operation, the three-dimensional organ region corresponding to the selected organ is automatically extracted and displayed on the three-dimensional drawing interface. The three-dimensional organ region is determined based on multiple two-dimensional images corresponding to the object to be radiotherapy.
7. A data processing device for use in radiotherapy, characterized in that, include: The acquisition unit is used to acquire multiple two-dimensional images corresponding to the object to be radiotherapy; The display unit is used to display the three-dimensional organ region corresponding to the selected organ on the three-dimensional drawing interface in response to the operator's organ selection operation. The first determining unit is used to determine the three-dimensional delineation area in the three-dimensional organ region corresponding to the three-dimensional delineation operation in response to the operator's three-dimensional delineation operation on the three-dimensional delineation interface. The second determining unit is used to determine, based on the multiple two-dimensional images and the three-dimensional delineated region, multiple two-dimensional delineated regions that correspond one-to-one with the multiple two-dimensional images, and the multiple two-dimensional delineated regions are used for radiotherapy on the subject to be radiotherapy.
8. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, they perform the data processing method for radiotherapy as described in any one of claims 1 to 6.
9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the data processing method for radiotherapy as described in any one of claims 1 to 6.
10. A computer program product, characterized in that, It includes a computer program that, when run by a processor, performs the data processing method for radiotherapy as described in any one of claims 1 to 6.