Method, apparatus, device, and medium for processing digital breast tomosynthesis images

Abstract

The present application relates to a method, apparatus, device, and medium for processing digital breast tomosynthesis images. The method includes: generating tomographic images based on projection images at different scanning angles; obtaining respective fused images according to the maximum intensity projection imaging of each tomographic image and the projection images at a target angle in each projection image; and superimposing the respective fused images in the generation order of each tomographic image to obtain a fused time-sequence image. Using this method can improve the efficiency of film reading.

Description

Technical Field

[0001] The present application relates to the technical field of image reconstruction, and particularly to a method, apparatus, device, and medium for processing digital breast tomosynthesis images. Background Art

[0002] In a digital breast tomosynthesis (DBT) device, during the process of taking breast tomosynthesis images, a series of projection data at different angles are obtained through sequential scanning at a certain angle, and then the DBT tomosynthesis images are reconstructed by corresponding algorithms. However, when reading the tomosynthesis images, 2D plain film images usually need to be referred to for mutual reference and corroboration to draw a more accurate diagnosis conclusion. Therefore, in the prior art, when directly reading the DBT tomosynthesis images, 2D plain film images need to be taken again, resulting in a low reading efficiency problem. Summary of the Invention

[0003] Based on this, it is necessary to provide a method, apparatus, device, and medium for processing digital breast tomosynthesis images that can improve the reading efficiency for the above technical problems.

[0004] A method for processing digital breast tomosynthesis images, the method comprising:

[0005] Generating tomosynthesis images according to projection images at different scanning angles;

[0006] Obtaining respective fusion images according to the maximum intensity projection imaging of each of the tomosynthesis images and the projection images at a target angle in each of the projection images;

[0007] Superposing the respective fusion images in the generation order of each of the tomosynthesis images to obtain a fused time-sequence image.

[0008] In one embodiment, the obtaining respective fusion images according to the maximum intensity projection imaging of each of the tomosynthesis images and the projection images at a target angle in each of the projection images includes:

[0009] Obtaining an average value image corresponding to each of the projection images by using the projection images at a target angle in each of the projection images;

[0010] Superposing the maximum intensity projection imaging of each of the tomosynthesis images and the average value images corresponding to each of the projection images according to a preset proportional value to obtain the respective fusion images.

[0011] In one embodiment, the obtaining an average value image corresponding to each of the projection images by using the projection images at a target angle in each of the projection images includes:

[0012] Map the projection images at the target angles in each of the projection images to each of the projection images to obtain an average image corresponding to each of the projection images.

[0013] In one embodiment, the target angles include: the vertical angle in each of the projection images and the left and right adjacent angles of the vertical angle.

[0014] In one embodiment, the target angles are related to the acquisition angles of each of the projection images.

[0015] In one embodiment, the step of superimposing each of the fusion images in the generation order of each of the tomographic images to obtain a fused time series diagram includes:

[0016] Superimpose each of the fusion images in the generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time series diagram.

[0017] In one embodiment, the step of superimposing each of the fusion images in the generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time series diagram includes:

[0018] Superimpose each of the fusion images in the forward generation order or the reverse generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time series diagram.

[0019] A processing device for digital breast tomosynthesis images, the device includes:

[0020] A generation module, configured to generate tomographic images according to projection images at different scanning angles;

[0021] A first acquisition module, configured to obtain each fusion image according to the maximum intensity projection imaging of each of the tomographic images and the projection images at the target angles in each of the projection images;

[0022] A second acquisition module, configured to superimpose each of the fusion images in the generation order of each of the tomographic images to obtain a fused time series diagram.

[0023] A computer device, including a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0024] Generate tomographic images according to projection images at different scanning angles;

[0025] Obtain each fusion image according to the maximum intensity projection imaging of each of the tomographic images and the projection images at the target angles in each of the projection images;

[0026] Stack the fused images in the generation order of the tomographic images to obtain a fused time series diagram.

[0027] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0028] Generate tomographic images based on projection images at different scanning angles;

[0029] Obtain each fused image based on the maximum intensity projection imaging of each tomographic image and the projection image at the target angle in each projection image;

[0030] Stack the fused images in the generation order of the tomographic images to obtain a fused time series diagram.

[0031] In the above method, device, equipment, and medium for processing digital breast tomosynthesis images, by generating tomographic images for medical diagnosis based on projection images at different scanning angles, fused images can be obtained according to the maximum intensity projection imaging of each tomographic image and the projection image at the target angle in each projection image, and then the obtained fused images can be stacked in the generation order of the tomographic images to obtain a fused time series diagram. Since the generated tomographic images are three-dimensional images, fused images can be obtained through the maximum intensity projection imaging of the tomographic images and the projection images at the target angle in each projection image, and the fused images are two-dimensional images. By stacking the obtained fused images in the generation order of the tomographic images, two-dimensional images at the target angle can be obtained. Therefore, when two-dimensional images are needed for medical diagnosis using three-dimensional tomographic images, the corresponding two-dimensional images can be directly obtained through this process, reducing the process of taking two-dimensional images and improving the efficiency of reading images. Description of the Drawings

[0032] Figure 1 It is an application environment diagram of the method for processing digital breast tomosynthesis images in an embodiment;

[0033] Figure 2 It is a schematic flowchart of the method for processing digital breast tomosynthesis images in an embodiment;

[0034] Figure 2a It is a schematic diagram of the target angle in the projection image in an embodiment;

[0035] Figure 3 It is a schematic flowchart of the method for processing digital breast tomosynthesis images in another embodiment;

[0036] Figure 3a It is a schematic diagram of obtaining an average value image corresponding to a projection image using the projection image at the target angle in the projection image in an embodiment;

[0037] Figure 4 It is a structural block diagram of a processing device for digital breast tomosynthesis images in an embodiment. Specific embodiments

[0038] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0040] Referring to "embodiments" in the present application means that specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application may be combined with other embodiments without conflict.

[0041] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be of the ordinary meaning understood by those with ordinary skills in the technical field to which the present application belongs. The terms "a", "one", "kind", "the" and other similar words involved in the present application do not indicate a quantity limitation and may represent a singular or plural number. The terms "including", "comprising", "having" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but may further include unlisted steps or units, or may further include other steps or units inherent to these processes, methods, products or devices. The "multiple" involved in the present application means greater than or equal to two. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first", "second" and the like involved in the present application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0042] The processing method for digital breast tomosynthesis images provided by the embodiments of the present application can be applicable to a computer device as shown in Figure 1 The computer device includes a processor and a memory connected through a system bus. A computer program is stored in the memory. When the processor executes the computer program, it can execute the steps of the following method embodiments. Optionally, the computer device may further include a network interface, a display screen, and an input device. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. Optionally, the computer device may be a server, a personal computer, a personal digital assistant, or other terminal devices, such as a tablet computer, a mobile phone, etc. It may also be a cloud or a remote server. The embodiments of the present application do not limit the specific form of the computer device.

[0043] In one embodiment, as shown in Figure 2 A processing method for digital breast tomosynthesis images is provided. Taking the application of this method to the computer device in Figure 1 as an example, the method includes the following steps:

[0044] S201, generate a tomographic image according to projection images at different scanning angles.

[0045] Among them, digital breast tomosynthesis (DBT) is a tomosynthesis technology. DBT uses low-dose projection images at multiple angles to reconstruct tomographic images, reducing the signal-to-noise ratio of calcifications and overcoming the problem that traditional two-dimensional mammography is affected by tissue overlap and thus affects the observation of lesions. In this embodiment, different scanning angles refer to multiple different scanning angles during DBT scanning. It should be noted here that the obtained projection images at different scanning angles are two-dimensional images. By reconstructing the two-dimensional projection images at different scanning angles, three-dimensional tomographic images can be generated. Optionally, the collected projection images at different scanning angles can be 15 to 60 projection images at different scanning angles. Optionally, the computer device can use an image reconstruction algorithm to reconstruct the projection images at different scanning angles to generate the above-mentioned tomographic images. Optionally, before reconstructing the projection images at different scanning angles, the computer device can preprocess the projection images at different scanning angles and use the preprocessed projection images to reconstruct tomographic images. Among them, the preprocessing can include processing such as segmenting, gray-scale transformation, window width and window level of the projection images. Optionally, the reconstruction algorithm can include any one of the filtered back projection reconstruction algorithm (FBP), the back projection filtration reconstruction algorithm (BPF), and the iterative reconstruction algorithm. This embodiment does not limit this here.

[0046] S202. Obtain each fused image according to the maximum density projection imaging of each tomographic image and the projection image of the target angle in each projection image.

[0047] Among them, the Maximum Intensity Projection (MIP) is to obtain a two-dimensional image by using perspective method, that is, it is generated by calculating the maximum density pixels encountered along each ray of the scanned object. When the fiber bundle passes through the original image of a section of tissue, the pixels with the maximum density in the image are retained and projected onto a two-dimensional plane, thus forming the MIP reconstructed image. MIP can reflect the X-ray attenuation value of the corresponding pixels, and even small density changes can be displayed on the MIP image, which can well display the stenosis, dilation, filling defect of blood vessels and distinguish the calcification on the blood vessel wall from the contrast agent in the blood vessel lumen, etc. The above fusion image is obtained by fusing a series of adjacent continuous tomographic images after maximum density projection with the projection images at adjacent angles in a certain proportion. In this embodiment, the computer device can first calculate the maximum density projection imaging of the tomographic images corresponding to different scanning angles by using the tomographic images at different scanning angles, and obtain the projection image of the target angle in the projection images at the above-mentioned scanning angles, and superimpose the maximum density projection imaging of each tomographic image and the projection image of the target angle in the projection images at different scanning angles to obtain the fusion image corresponding to each tomographic image. Exemplarily, the projection image of the above target angle can be three frames of projection images at the middle angle among the projection images at each scanning angle. Optionally, in this embodiment, the above target angle includes the vertical angle in each projection image and the left and right adjacent angles of the vertical angle. Exemplarily, as Figure 2a shown, Figure 2a shows an example of the vertical angle in this embodiment. Further, the target angle is related to the acquisition angle of each projection image, that is to say, the above target angle changes with the change of the acquisition angle of each projection image, and different acquisition angles of the projection images will correspond to different target angles. The computer device can determine the target angle according to the acquisition angle of each projection image.

[0048] S203. Superimpose the fusion images in the generation order of each tomographic image to obtain a fused time series diagram.

[0049] Among them, the generation order of each tomographic image can include the generation order of each projection image, the processing order of each projection image, and the interval order of processing each projection image. The above fused time series diagram can be played in a form similar to a video, that is to say, in this embodiment, the obtained fused time series diagram is a dynamic fused time series diagram, that is, the obtained fused time series diagram is an image that displays the tomographic images in the generation order of the tomographic images in the form of an animation. For example, if the generated tomographic images include 10 images, the computer device can superimpose the fusion images corresponding to these 10 tomographic images in the generation order of these 10 tomographic images to obtain a fused time series diagram.

[0050] In the above method for processing digital breast tomosynthesis images, tomographic images for medical diagnosis can be generated based on projection images at different scanning angles. Thus, a fused image can be obtained according to the maximum intensity projection imaging of each tomographic image and the projection images at the target angle in each projection image. Furthermore, the obtained fused images can be stacked in the generation order of each tomographic image to obtain a fused time-sequence diagram. Since the generated tomographic images are three-dimensional images, a fused image can be obtained through the maximum intensity projection imaging of the tomographic images and the projection images at the target angle in each projection image, and this fused image is a two-dimensional image. In this way, by stacking the obtained fused images in the generation order of the tomographic images, a two-dimensional image at the target angle can be obtained. Therefore, when a two-dimensional image is required for medical diagnosis using three-dimensional tomographic images, the corresponding two-dimensional image can be directly obtained through this process, reducing the process of taking two-dimensional images and improving the film reading efficiency.

[0051] Furthermore, in the scenario of obtaining each fused image according to the maximum intensity projection imaging of each tomographic image and the projection images at the target angle in each projection image, in one embodiment, as Figure 3 shown, the above S202 includes:

[0052] S301, using the projection images at the target angle in each projection image to obtain the average value image corresponding to each projection image.

[0053] Optionally, as Figure 3a shown, in this embodiment, the computer device can map the projection images at the target angle in each of the above projection images to each projection image to obtain the average value image corresponding to each projection image; or, the computer device can obtain the pixel mean value of the projection images at the target angle in each projection image to obtain the average value image corresponding to each projection image.

[0054] S302, stacking the maximum intensity projection imaging of each tomographic image and the average value image corresponding to each projection image according to a preset ratio value to obtain each fused image.

[0055] Among them, the preset ratio value is the stacking ratio of the maximum intensity projection imaging of each tomographic image and each projection image. For example, it can be 1:1, or ratio values such as 1:2, etc. This embodiment does not limit this here. For example, if the preset ratio value is 1:1, the computer device stacks the maximum intensity projection imaging of each tomographic image and the average value image corresponding to each projection image to obtain the above-mentioned each fused image; for another example, if the preset ratio value is 1:2, the computer can stack the maximum intensity projection imaging of each tomographic image and the average value image corresponding to each projection image according to the ratio value of 1:2 to obtain the above-mentioned each fused image.

[0056] In this embodiment, since the computer device utilizes the projection images of the target angle in each projection image, it can accurately obtain the average value image corresponding to each projection image. Furthermore, the maximum density projection imaging of each tomographic image and the average value image corresponding to each projection image can be superimposed according to a preset proportional value, and each fused image can be accurately obtained, improving the accuracy of obtaining the fused image.

[0057] In the scenario of superimposing each fused image in the generation order of each tomographic image to obtain a fused time sequence diagram, in one embodiment, the above S203 includes: superimposing each fused image in the generation order of each tomographic image according to a preset number of accumulated frames to obtain a fused time sequence diagram.

[0058] It can be understood that as the number of tomographic images increases, the maximum density projection imaging of each tomographic image and the projection images of the target angle in each projection image are continuously updated and continue until new fused images are obtained. Finally, when all tomographic images are generated, the final fused image is obtained. In practical applications, the computer device can determine the preset number of accumulated frames of the fused images to be superimposed according to the doctor's film reading requirements, and superimpose each fused image in the generation order of each tomographic image according to the preset number of accumulated frames to obtain a fused time sequence diagram. For example, if there are 50 generated tomographic images and the preset number of accumulated frames is 10, the computer device can superimpose the fused images from the 1st frame to the 10th frame in the generation order of the corresponding tomographic images to obtain a fused time sequence diagram; or the computer device can also superimpose the fused images from the 2nd frame to the 11th frame in the generation order of the corresponding tomographic images to obtain a fused time sequence diagram; or the computer device can also superimpose the fused images from the 3rd frame to the 12th frame in the generation order of the corresponding tomographic images to obtain a fused time sequence diagram. Optionally, when the computer device superimposes each fused image in the generation order of each tomographic image according to the preset number of accumulated frames to obtain a fused time sequence diagram, it can superimpose each fused image in the forward generation order or the reverse generation order of each tomographic image according to the preset number of accumulated frames to obtain a fused time sequence diagram. It should be noted that whether the computer device superimposes each fused image in the forward generation order of each tomographic image or in the reverse generation order of each tomographic image, it is necessary to ensure that the superimposition is carried out in the continuous generation order of each tomographic image.

[0059] In this embodiment, the computer device can accurately stack each fused image in the generation order of each tomographic image according to the preset cumulative number of frames, obtaining a fused time-sequence diagram, ensuring the accuracy of the obtained fused time-sequence diagram; in addition, stacking each fused image in the generation order of each tomographic image according to the preset cumulative number of frames can flexibly determine the number of frames of the fused images to be stacked according to actual requirements, improving the flexibility of the obtained fused time-sequence diagram.

[0060] It should be understood that although Figures 2-3 the steps in the flowchart of Figures 2-3 are shown in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover,

[0061] In one embodiment, as Figure 4 shown, a processing device for digital breast tomosynthesis images is provided, including: a generation module, a first acquisition module, and a second acquisition module, where:

[0062] The generation module is used to generate tomographic images according to projection images at different scanning angles.

[0063] The first acquisition module is used to obtain each fused image according to the maximum intensity projection imaging of each tomographic image and the projection image at the target angle in each projection image.

[0064] The second acquisition module is used to stack each fused image in the generation order of each tomographic image to obtain a fused time-sequence diagram.

[0065] Optionally, the target angle includes: the vertical angle in each projection image and the left and right adjacent angles of the vertical angle.

[0066] Optionally, the target angle is related to the acquisition angle of each projection image.

[0067] The processing device for digital breast tomosynthesis images provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0068] Based on the above embodiment, optionally, the above first acquisition module includes: a first acquisition unit and a second acquisition unit, where:

[0069] The first acquisition unit is configured to obtain an average value image corresponding to each projection image by using the projection images at a target angle in each projection image.

[0070] The second acquisition unit is configured to superimpose the maximum intensity projection images of each tomographic image and the average value images corresponding to each projection image according to a preset proportional value to obtain each fused image.

[0071] The processing device for digital breast tomosynthesis images provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0072] Based on the above embodiment, optionally, the above first acquisition unit is specifically configured to map the projection images at a target angle in each projection image to each projection image to obtain an average value image corresponding to each projection image.

[0073] The processing device for digital breast tomosynthesis images provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0074] Based on the above embodiment, optionally, the above second acquisition module includes: a third acquisition unit, where:

[0075] The third acquisition unit is configured to superimpose each fused image in the generation order of each tomographic image according to a preset number of accumulated frames to obtain a fused time sequence diagram.

[0076] The processing device for digital breast tomosynthesis images provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0077] Based on the above embodiment, optionally, the above third acquisition unit is specifically configured to superimpose each fused image in the forward generation order of each tomographic image or in the reverse generation order of each tomographic image according to a preset number of accumulated frames to obtain a fused time sequence diagram.

[0078] The processing device for digital breast tomosynthesis images provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0079] For the specific limitations of the processing device for digital breast tomosynthesis images, reference may be made to the limitations of the processing method for digital breast tomosynthesis images in the foregoing text, which will not be elaborated here. Each module in the above-mentioned processing device for digital breast tomosynthesis images can be implemented in whole or in part by software, hardware, and their combinations. The above-mentioned modules can be embedded in the processor of the computer device in hardware form or be independent of it, or be stored in the memory of the computer device in software form, so as to facilitate the processor to call and execute the operations corresponding to each of the above-mentioned modules.

[0080] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the following steps are implemented:

[0081] Generate tomographic images according to projection images at different scanning angles;

[0082] Obtain each fused image according to the maximum intensity projection imaging of each tomographic image and the projection images at the target angles in each projection image;

[0083] Stack each fused image in the generation order of each tomographic image to obtain a fused time sequence diagram.

[0084] For the computer device provided in the above embodiment, its implementation principle and technical effects are similar to those of the above method embodiment, which will not be elaborated here.

[0085] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0086] Generate tomographic images according to projection images at different scanning angles;

[0087] Obtain each fused image according to the maximum intensity projection imaging of each tomographic image and the projection images at the target angles in each projection image;

[0088] Stack each fused image in the generation order of each tomographic image to obtain a fused time sequence diagram.

[0089] For the computer-readable storage medium provided in the above embodiment, its implementation principle and technical effects are similar to those of the above method embodiment, which will not be elaborated here.

[0090] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0091] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0092] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method for processing digital breast tomosynthesis images, characterized in that The method includes: Generating tomographic images based on projection images at different scanning angles; Superimposing the maximum intensity projection images of each of the tomographic images and the projection images at the target angles in each of the projection images to obtain respective fused images; the projection images at the target angles include multiple frames of projection images of adjacent angles among the multiple scanning angles; Superimposing each of the fused images in the generation order of each of the tomographic images to obtain a fused time-sequence diagram.

2. The method according to claim 1, wherein The superimposing the maximum intensity projection images of each of the tomographic images and the projection images at the target angles in each of the projection images to obtain respective fused images includes: Using the projection images at the target angles in each of the projection images to obtain respective average value images corresponding to each of the projection images; Superimposing the maximum intensity projection images of each of the tomographic images and the respective average value images corresponding to each of the projection images according to a preset ratio value to obtain respective fused images.

3. The method according to claim 2, wherein The using the projection images at the target angles in each of the projection images to obtain respective average value images corresponding to each of the projection images includes: Mapping the projection images at the target angles in each of the projection images to each of the projection images to obtain respective average value images corresponding to each of the projection images.

4. The method according to claim 2, wherein The target angles include: the vertical angle in each of the projection images and the left and right adjacent angles of the vertical angle.

5. The method according to claim 4, wherein The target angles are related to the acquisition angles of each of the projection images.

6. The method according to claim 1, wherein The superimposing each of the fused images in the generation order of each of the tomographic images to obtain a fused time-sequence diagram includes: Superimposing each of the fused images in the generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time-sequence diagram.

7. The method according to claim 6, wherein The superimposing each of the fused images in the generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time-sequence diagram includes: Superimposing each of the fused images in the forward generation order or the reverse generation order of each of the tomographic images according to a preset number of accumulated frames to obtain the fused time-sequence diagram.

8. A processing device for digital breast tomosynthesis images, characterized in that, The apparatus includes: A generation module, configured to generate tomographic images based on projection images at different scanning angles; A first acquisition module, configured to superimpose the maximum intensity projection images of each of the tomographic images and the projection images at the target angles in each of the projection images to obtain respective fused images; the projection images at the target angles include multiple frames of projection images of adjacent angles among the multiple scanning angles; A second acquisition module, configured to superimpose each of the fused images in the generation order of each of the tomographic images to obtain a fused time-sequence diagram.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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