Scanning method and device, storage medium, and computer equipment

Abstract

The present application discloses a scanning method and device, a storage medium, and a computer device, the method comprising: obtaining the flat film information of the target scan object, and determining the target bed height based on the flat film information; adjusting the flat film information based on the target bed height to obtain the target flat film information; and performing subsequent operations based on the target flat film information. The present application helps to quickly determine the target bed height, adjust the flat film information according to the target bed height, and perform subsequent operations based on the adjusted flat film information, which improves the quality of the scanned image while improving the adjustment efficiency, and greatly improves the user experience.

Description

Technical Field

[0001] The present application relates to the field of medical imaging technology, and in particular to a scanning method and device, a storage medium, and a computer device. Background Art

[0002] CT scanning equipment is used to perform spiral or tomographic scanning on the target scanning object to generate CT images. When the CT scanning equipment is scanning, if the center of the target scanning object to be detected is inconsistent with the scanning center of the CT scanning equipment, the scanning dose of the target scanning object will be uneven, which will directly affect the quality of the CT image.

[0003] In order to make the center of the target scan object's to-be-detected part consistent with the scanning center of the CT scanning device, the CT scanning staff usually needs to manually operate the positioning light of the CT scanning device and adjust the bed height by marking the side of the target scan object with the positioning light, so that the center of the target scan object's to-be-detected part and the scanning center of the CT scanning device are approximately consistent. However, this method is greatly affected by human factors, and has low accuracy and efficiency. Summary of the invention

[0004] In view of this, the present application provides a scanning method and device, a storage medium, and a computer device, which help to quickly determine the target bed height, adjust the flat film information according to the target bed height, and perform subsequent operations based on the adjusted flat film information. While improving the adjustment efficiency, it also improves the quality of the scanned image and greatly improves the user experience.

[0005] According to one aspect of the present application, a scanning method is provided, comprising:

[0006] Acquire the planar film information of the target scan object, and determine the target bed height based on the planar film information;

[0007] Based on the target bed height, adjusting the flat film information to obtain target flat film information;

[0008] Subsequent operations are performed according to the target flat film information.

[0009] Optionally, determining a target bed height based on the planar film information includes:

[0010] Based on the flat film information, determining the position center of the region of interest of the target scan object in a target direction, wherein the target direction is a direction perpendicular to the bed surface of the scanning bed;

[0011] The target bed height is determined according to the positional relationship between the position center and the scanning center.

[0012] Optionally, determining the position center of the region of interest of the target scan object in a target direction based on the planar film information includes:

[0013] Based on the planar film information, obtaining a target thickness of the region of interest of the target scan object in the target direction;

[0014] Based on the target thickness, determining the position center of the region of interest of the target scanning object in the target direction;

[0015] The plain film information includes an anteroposterior film and / or a lateral film.

[0016] Optionally, acquiring a target thickness of the region of interest of the target scan object in the target direction based on the flat film information includes:

[0017] Dividing the region of interest indicated by the flat film information into a plurality of sub-regions in a feeding direction parallel to the scanning bed, and determining a sub-thickness corresponding to each sub-region;

[0018] An average value of the plurality of sub-thicknesses is obtained, and the average value is used as the target thickness of the region of interest of the target scanning object in the target direction.

[0019] Optionally, adjusting the flat film information based on the target bed height to obtain target flat film information includes:

[0020] Based on the target bed height, determining the scanning bed adjustment direction;

[0021] Based on the adjustment direction, determining an adjustment method of the flat sheet information;

[0022] Based on the adjustment method, the flat sheet information is adjusted to obtain target flat sheet information.

[0023] Optionally, determining the adjustment mode of the flat sheet information based on the adjustment direction includes:

[0024] Obtaining the tube focus position corresponding to the flat film information;

[0025] If the focus position of the tube is on one side of the reference plane, based on the adjustment direction, determining that the adjustment method of the planar film information is to scale the target scanning object in the planar film information;

[0026] If the focus position of the tube is on the reference plane, based on the adjustment direction, determining that the adjustment method of the planar film information is to translate the target scanning object in the planar film information;

[0027] The reference plane is a plane passing through the scanning center and parallel to the bed surface of the scanning bed.

[0028] Optionally, if the focus position of the tube is on one side of the reference plane, determining, based on the adjustment direction, that the adjustment mode of the planar film information is to scale the target scanning object in the planar film information includes:

[0029] If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube increases, determining that the adjustment method of the flat film information is to reduce the size of the target scanning object in the flat film information;

[0030] If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube decreases, the adjustment method of the flat film information is determined to be to enlarge the size of the target scanning object in the flat film information.

[0031] Optionally, if the focus position of the tube is on a reference plane, determining, based on the adjustment direction, that the adjustment method of the planar film information is to translate a target scanning object in the planar film information includes:

[0032] If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground increases, determining that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side away from the bed surface indicated by the flat film information;

[0033] If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground decreases, the adjustment method of the flat film information is determined to be to translate the target scanning object in the flat film information to a side close to the bed surface indicated by the flat film information.

[0034] Optionally, the scaling ratio of scaling the target scanning object in the planar film information and the translation distance of translating the target scanning object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when acquiring the planar film information.

[0035] Optionally, the adjusting the flat film information based on the target bed height to obtain target flat film information further includes:

[0036] Based on the target bed height, the bed height and / or bed code in the flat film information is updated to obtain the target flat film information.

[0037] Optionally, performing subsequent operations according to the target flat film information includes:

[0038] Selecting a positioning frame on the target flat sheet information;

[0039] Based on the positioning frame, acquiring scanning parameter information, the scanning parameter information including a starting scanning position and an ending scanning position;

[0040] After the actual bed height of the scanning bed is adjusted based on the target bed height, an axial scan or a helical scan is performed based on the scanning parameter information.

[0041] According to another aspect of the present application, a scanning device is provided, comprising:

[0042] A target bed height acquisition module is used to acquire the flat film information of the target scan object and determine the target bed height based on the flat film information;

[0043] A flat film information adjustment module, used for adjusting the flat film information based on the target bed height to obtain target flat film information;

[0044] An execution module is used to perform subsequent operations according to the target flat film information.

[0045] Optionally, the target bed height acquisition module includes:

[0046] A position center determination unit, used for determining the position center of the region of interest of the target scan object in a target direction based on the flat film information, wherein the target direction is a direction perpendicular to the bed surface of the scanning bed;

[0047] The target bed height determination unit is used to determine the target bed height according to the positional relationship between the position center and the scanning center.

[0048] Optionally, the position center determination unit is used to: obtain a target thickness of the region of interest of the target scan object in the target direction based on the planar film information; determine the position center of the region of interest of the target scan object in the target direction based on the target thickness; wherein the planar film information includes an anteroposterior film and / or a lateral film.

[0049] Optionally, the position center determination unit is further used to: divide the region of interest indicated by the flat film information into multiple sub-regions in a feeding direction parallel to the scanning bed, and determine the sub-thickness corresponding to each sub-region; obtain an average of the multiple sub-thicknesses, and use the average as the target thickness of the region of interest of the target scanning object in the target direction.

[0050] Optionally, the flat sheet information adjustment module includes:

[0051] A first determining unit, configured to determine an adjustment direction of the scanning bed based on the target bed height;

[0052] A second determining unit, configured to determine an adjustment method of the flat sheet information based on the adjustment direction;

[0053] The third determining unit is used to adjust the flat film information based on the adjustment method to obtain target flat film information.

[0054] Optionally, the second determination unit is used to: obtain a tube focal position corresponding to the planar film information; if the tube focal position is on one side of a reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to scale a target scanning object in the planar film information; if the tube focal position is on the reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to translate a target scanning object in the planar film information; wherein the reference plane is a plane passing through the scanning center and parallel to the bed surface of the scanning bed.

[0055] Optionally, the second determining unit is further configured to: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube increases, determine that the adjustment method of the flat film information is to reduce the size of the target scanning object in the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube decreases, determine that the adjustment method of the flat film information is to enlarge the size of the target scanning object in the flat film information.

[0056] Optionally, the second determining unit is further used to: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground increases, determine that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side away from the bed surface indicated by the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground decreases, determine that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side close to the bed surface indicated by the flat film information.

[0057] Optionally, the scaling ratio of scaling the target scanning object in the planar film information and the translation distance of translating the target scanning object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when acquiring the planar film information.

[0058] Optionally, the flat film information adjustment module is further used to: based on the target bed height, update the bed height and / or bed code in the flat film information to obtain the target flat film information.

[0059] Optionally, the execution module is used to: select a positioning frame on the target flat film information; based on the positioning frame, obtain scanning parameter information, the scanning parameter information including a starting scanning position and an ending scanning position; after adjusting the actual bed height of the scanning bed based on the target bed height, perform an axial scan or a spiral scan based on the scanning parameter information.

[0060] According to another aspect of the present application, a storage medium is provided, on which a computer program is stored, and the program implements the above scanning method when executed by a processor.

[0061] According to another aspect of the present application, a computer device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the above-mentioned scanning method when executing the program.

[0062] Through the above technical solution, the present application provides a scanning method and device, a storage medium, and a computer device, which determine the target bed height of the scanning bed based on the flat film information, and then adjust the flat film information based on the determined target bed height to obtain the target flat film information. The subsequent user can use the target flat film information to perform subsequent operations. The embodiment of the present application improves the adjustment efficiency while improving the quality of the scanned image, thereby greatly improving the user experience.

[0063] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0065] Figure 1 A schematic diagram of a scanning method provided in an embodiment of the present application is shown;

[0066] Figure 2 A schematic diagram of a flow chart of another scanning method provided in an embodiment of the present application is shown;

[0067] Figure 3 A schematic diagram of a scanning situation provided in an embodiment of the present application is shown;

[0068] Figure 4 A schematic diagram of a flat sheet division provided in an embodiment of the present application is shown;

[0069] Figure 5 A schematic diagram of an imaging relationship provided by an embodiment of the present application is shown;

[0070] Figure 6 A schematic diagram of a flat sheet adjustment provided by an embodiment of the present application is shown;

[0071] Figure 7 A schematic diagram of adjusting the height of a scanning bed provided in an embodiment of the present application is shown;

[0072] Figure 8A schematic structural diagram of a scanning device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0073] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0074] In this embodiment, a scanning method is provided, such as Figure 1 As shown, the method includes:

[0075] Step 101, obtaining the planar film information of the target scan object, and determining the target bed height based on the planar film information;

[0076] Taking CT scanning as an example, the flat film information of the target scanning object is obtained through the CT scanning device. The target scanning object can be a person, an animal, etc., or a part of a person or an animal. The flat film information can include a flat film image or a flat film dicom header file information, etc. The flat film image can be at least one of an anteroposterior film and a lateral film, wherein the anteroposterior film and the lateral film are collectively referred to as a double flat film. According to the flat film information, the target bed height can be determined, wherein the method for determining the target bed height is described in detail below.

[0077] Step 102, based on the target bed height, adjusting the flat film information to obtain target flat film information;

[0078] Further, after determining the target bed height, the bed height of the scanning bed can be adjusted to the target bed height. After the bed height of the scanning bed is adjusted to the target bed height, the scanning center height of the CT scanning device is consistent with the center of the target scanning object. As the bed height changes, the positional relationship between the focus of the tube and the target scanning object will change, so the flat film information obtained at different bed heights is different. Therefore, after the actual bed height of the scanning bed is adjusted, the flat film information needs to be adjusted. The subsequent doctor can perform operations such as positioning frame selection on the adjusted flat film information to ensure the accuracy of the scanning information. The adjusted flat film information is the target flat film information. Among them, adjusting the flat film information includes adjusting at least one of the size, position, updating the bed code and bed height of the target scanning object in the flat film information.

[0079] Step 103: Perform subsequent operations based on the target flat film information.

[0080] Subsequent operations include, but are not limited to, selecting a positioning frame and performing a CT spiral scan or a CT axial scan based on the positioning frame.

[0081] By applying the technical solution of this embodiment, the target bed height of the scanning bed is determined based on the flat film information, and then the flat film information is adjusted based on the determined target bed height to obtain the target flat film information. The subsequent user can use the target flat film information to perform subsequent operations. The embodiment of the present application improves the quality of the scanned image while improving the adjustment efficiency, thereby greatly improving the user experience.

[0082] Further, as a refinement and extension of the specific implementation of the above embodiment, in order to fully illustrate the specific implementation process of this embodiment, another scanning method is provided, such as Figure 2 As shown, the method includes:

[0083] Step 201, obtaining the flat film information of the target scan object, and determining the position center of the region of interest of the target scan object in a target direction based on the flat film information, wherein the target direction is a direction perpendicular to the bed surface of the scanning bed; and determining the target bed height according to the positional relationship between the position center and the scanning center;

[0084] In the above embodiment, the target direction can be pre-set, wherein the target direction can be a direction perpendicular to the bed surface of the scanning bed. Taking CT scanning as an example, first, the target scanning object is scanned by a CT scanning device to obtain the corresponding flat film information. After determining the flat film information, the position center of the target scanning object's region of interest in the target direction can be determined based on the flat film information. For example, when the target scanning object lies flat on the scanning bed, the position center refers to the center of the thickness of the target scanning object; if the target scanning object lies sideways on the scanning bed, the position center refers to the center of the width of the target scanning object. Taking the target scanning object as a person as an example, the thickness of the target scanning object refers to the distance from the front chest to the back, and the width of the target scanning object refers to the distance from the left hand to the right hand. After determining the position center of the target scanning object's region of interest in the target direction, the target bed height of the scanning bed can be determined based on the position center and the scanning center.

[0085] Step 202, based on the target bed height, determining the adjustment direction of the scanning bed; based on the adjustment direction, determining the adjustment method of the flat film information; based on the adjustment method, adjusting the flat film information to obtain target flat film information;

[0086] In this embodiment, after the target bed height is determined, the adjustment direction of the scanning bed can be determined according to the target bed height. Here, the adjustment direction of the scanning bed includes upward adjustment, i.e., height adjustment, and downward adjustment, i.e., height adjustment. Afterwards, the adjustment method of the flat film information can be further determined according to the adjustment direction of the scanning bed, and then the flat film information is adjusted according to the adjustment method, so as to obtain the adjusted flat film information, i.e., the target flat film information.

[0087] After determining the target bed height, the bed height of the scanning bed needs to be adjusted to the target bed height. After adjusting the bed height of the scanning bed to the target bed height, the scanning center height of the CT scanning device is consistent with the position center of the target scanning object's area of ​​interest. However, the flat film information corresponding to the target scanning object is still the initial flat film information. When the doctor subsequently selects the position of the positioning frame on the flat film to scan the target scanning object again, since the various position information on the flat film is the initial position information, it is inaccurate to directly scan the target scanning object in this case. Therefore, the flat film information can be adjusted to obtain the target flat film information, and the target flat film information is used to perform a CT scan on the target scanning object. This can avoid adjusting the bed height to the target bed height, and then re-scanning the target scanning object to obtain the target flat film, thereby reducing the scanning dose of the target scanning object.

[0088] Step 203, selecting a positioning frame on the target flat film information; based on the positioning frame, obtaining scanning parameter information, the scanning parameter information including a start scanning position and an end scanning position; after adjusting the actual bed height of the scanning bed based on the target bed height, performing an axial scan or a spiral scan based on the scanning parameter information.

[0089] In this embodiment, after adjusting the flat film information to obtain the target flat film information, the user can select the positioning frame according to the target flat film information. In this embodiment, after the user selects the positioning frame, the scanning parameter information can be determined according to the selected positioning frame. Here, the scanning parameter information can include the starting scanning position and the ending scanning position, and can also include other scanning parameter information. After determining the scanning parameter information, if the scanning bed has been adjusted to the target bed height at this time. Then, the target scanning object can be subjected to CT spiral scanning or CT axial scanning according to the scanning parameter information.

[0090] Optionally, the "determining the position center of the region of interest of the target scan object in the target direction based on the planar film information" in step 201 includes: obtaining a target thickness of the region of interest of the target scan object in the target direction based on the planar film information; determining the position center of the region of interest of the target scan object in the target direction based on the target thickness; wherein the planar film information includes an anteroposterior film and / or a lateral film.

[0091] In this embodiment, after obtaining the planar film information, the target thickness of the region of interest of the target scan object in the target direction can be further identified from the planar film information, and half of the target thickness is used as the position center of the target scan object.

[0092] Optionally, the step 201 of “determining the target bed height according to the positional relationship between the position center and the scanning center” includes: determining the target bed height according to a height difference between the scanning center and the position center.

[0093] In this embodiment, from Figure 3 It can be seen that the sum of the target bed height and the height of the position center of the target scanning object's area of ​​interest is equal to the scanning center height of the CT scanning device. Here, the position center refers to half of the target thickness. Therefore, half of the target thickness can be used as the half thickness. The difference obtained by subtracting the half thickness from the scanning center height of the CT scanning device is the height that the scanning bed needs to be adjusted. The sum of the actual bed height and the difference is the target bed height of the scanning bed. If the scanning center height of the CT scanning device is inconsistent with the position center of the target scanning object's area of ​​interest, then when the target scanning object is subjected to a CT scan, uneven scanning dose may occur, thereby affecting the quality of the CT image. Therefore, the target bed height of the scanning bed can be determined using the target thickness of the target scanning object's area of ​​interest and the scanning center height of the CT scanning device. In this way, when the target scanning object is under the target bed height, the position center of the target scanning object's area of ​​interest can be made consistent with the scanning center height of the CT scanning device, thereby greatly improving the quality of the CT image. Here, the scanning center height of the CT scanning device is fixed and known. As Figure 3 As shown, the target scanning object is the human body, and the target thickness is the human body thickness, then the target bed height = scanning center height - (half of the human body thickness). Therefore, if the human body thickness is determined, the target bed height is then determined.

[0094] In an embodiment of the present application, optionally, the “obtaining a target thickness of the region of interest of the target scanning object in the target direction based on the flat film information” includes: inputting the flat film information into a trained deep learning model; and obtaining a target thickness of the region of interest of the target scanning object in the target direction based on the output of the deep learning model.

[0095] In this embodiment, as far as the CT scanning device is concerned, it is the tube that emits the scanning ray, that is, the position of the tube focus determines the position of the ray emission. A reference plane is pre-set here, and the reference plane refers to a plane that passes through the scanning center and is parallel to the bed surface of the scanning bed. If the focus position of the tube is on one side of the reference plane when acquiring the flat film information, regardless of whether the target scanning object is in a lying state or a side-lying state, the region of interest displayed on the flat film is the projection of the target scanning object on the plane parallel to the bed surface of the scanning bed, and relevant information about the target thickness cannot be seen from the region of interest of the flat film. At this time, the flat film information can be input into the trained deep learning model. Specifically, the flat film can be divided into different sub-areas. Assuming that the coordinate axis corresponding to the direction perpendicular to the ground is the y-axis, the direction in which the scanning bed moves forward and backward is the z-axis, and the other direction is the x-axis. The plane formed by the z-axis and the x-axis is parallel to the ground, then the flat film can be divided in the direction parallel to the x-axis, or in the direction parallel to the z-axis. After that, the divided sub-areas can be input into the trained deep learning model, and then the sub-thickness corresponding to each sub-area in the y-axis direction can be obtained. Finally, the sub-thickness mean corresponding to different sub-areas can be calculated, and the sub-thickness mean is used as the target thickness of the target scanning object. Among them, the deep learning model can be obtained by training the sample input set and the sample output set. The sample input set can be the sample sub-area obtained after the sample flat film is divided, and the sample output set can be the true thickness corresponding to each sample sub-area. Here, each sample flat film in the sample input set is obtained when the focus position of the tube is on one side of the reference plane. Through the deep learning model, the target thickness information that is not on the flat film can be determined simply and conveniently when the area of ​​interest on the flat film is the projection of the target scanning object on a plane parallel to the bed surface.

[0096] Due to different scanning requirements, the requirements for flat film information are also different. For example, if the target scanning object is in a lying state, the target thickness can be directly determined based on the lateral view of the target scanning object, but in fact, the region of interest of the target scanning object needs to be further determined based on the frontal view. In this case, in order to avoid scanning the target scanning object twice, the focus position of the tube can be placed on one side of the reference plane to obtain flat film information. At this time, the target thickness of the region of interest of the target scanning object can be determined according to the above method.

[0097] In addition, when the focus position of the tube is on the reference plane, the flat film information can also be input into the trained deep learning model. After the flat film information is input into the trained deep learning model, the target thickness of the region of interest of the target scan object in the target direction can be determined according to the output of the deep learning model. This is the same as the above method.

[0098] In an embodiment of the present application, optionally, the “obtaining a target thickness of the region of interest of the target scanning object in the target direction based on the flat film information” further includes: dividing the region of interest indicated by the flat film information into a plurality of sub-regions in a feed direction parallel to the scanning bed, and determining a sub-thickness corresponding to each sub-region; obtaining an average of the plurality of sub-thicknesses, and using the average as the target thickness of the region of interest of the target scanning object in the target direction.

[0099] In this embodiment, when the focus position of the tube is on the reference plane when acquiring the planar film information, the target thickness can also be determined by the following method. At this time, the region of interest indicated by the planar film information can also be divided, specifically, it can be divided according to the direction parallel to the target direction, and after the division, multiple sub-regions can be obtained. Figure 4 As shown, when acquiring the flat film information, the focus position of the tube is on the reference plane, the target scanning object is in a flat position on the scanning bed, and the scanned object is a lateral film of the target scanning image. The region of interest in the flat film can be divided according to the feeding direction parallel to the scanning bed, and the intervals of the divisions can be preset and equal. Then, the third edge position and the fourth edge position can be identified from each sub-region, wherein the third edge position and the fourth edge position are edge positions parallel to the target direction, and specifically can be the position of the pixel points on the edge. Since each sub-region has a certain interval, the positions of all the pixel points on the third edge can be accumulated and averaged to obtain the third edge position, and similarly, the fourth edge position can be obtained. Figure 4 The third edge position is identified from the left side of each sub-region, and the fourth edge position is identified from the right side. After determining the third edge position and the fourth edge position corresponding to each sub-region, the difference between the third edge position and the fourth edge position can be calculated. When the difference corresponding to a sub-region is positive, the difference is the sub-thickness of the sub-region. When the difference is negative, the absolute value of the difference is the sub-thickness of the sub-region. Specifically, the difference between the third edge position and the fourth edge position can be the difference in the number of pixels, and then the difference in number is multiplied by the real physical size corresponding to each pixel to obtain the sub-thickness of the sub-region. In addition, the third edge position can also be determined as the side with a larger coordinate value on the coordinate axis, and the fourth edge position can be determined as the side with a smaller coordinate value on the coordinate axis, and then the sub-thickness of the corresponding sub-region can be determined directly according to the difference between the third edge position and the fourth edge position. Finally, the mean of the sub-thickness of all sub-regions can be determined based on the sub-thickness corresponding to each sub-region, and the mean is used as the target thickness of the region of interest of the target scanning object in the target direction.

[0100] In the embodiment of the present application, optionally, the "determining the adjustment method of the flat film information based on the adjustment direction" in step 202 includes: obtaining the tube focus position corresponding to the flat film information; if the tube focus position is on one side of the reference plane, determining, based on the adjustment direction, that the adjustment method of the flat film information is to scale the target scanning object in the flat film information; if the tube focus position is on the reference plane, determining, based on the adjustment direction, that the adjustment method of the flat film information is to translate the target scanning object in the flat film information; wherein the reference plane is a plane passing through the scanning center and parallel to the bed surface of the scanning bed.

[0101] In the embodiment of the present application, optionally, the scaling ratio of scaling the target scanning object in the planar film information and the translation distance of translating the target scanning object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when acquiring the planar film information.

[0102] In this embodiment, before determining the adjustment method of the planar film information, the focus position of the tube when acquiring the planar film information can be determined first, that is, the position where the ray is emitted when acquiring the planar film information. If the focus position of the tube is on one side of the reference plane, then the adjustment method of the planar film information can be determined as scaling the target scanning object in the planar film information based on the adjustment direction; if the focus position of the tube is on the reference plane, then the adjustment method of the planar film information can be determined as translating the target scanning object in the planar film information based on the adjustment direction. For example, the target scanning object is in a lying state on the scanning bed. If the focus position of the tube is on one side of the reference plane when acquiring the planar film information, then the region of interest displayed on the planar film is the projection of the target scan object on the plane parallel to the scanning bed surface. After the bed height is adjusted, the distance between the focus of the tube and the target scan object in the direction of the tube laying out will change. Therefore, when adjusting the planar film information, the region of interest of the target scan object can be scaled; if the focus position of the tube is on the reference plane when acquiring the planar film information, after the bed height is adjusted, the distance between the focus of the tube and the target scan object in the direction of the tube laying out will not change, but the target scan object is translated relative to the focus of the tube in the height direction of the scanning bed. Therefore, when adjusting the planar film information, the region of interest of the target scan object can be translated. In this embodiment, the light beam emitted by the tube is a fan beam or a cone beam, and the laying out direction of the tube can be the direction indicated by the center of the fan beam or the cone beam. The scaling ratio of the target scanning object in the planar film information and the translation distance of the target scanning object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when the planar film information is obtained.

[0103] In the embodiment of the present application, optionally, the “if the focus position of the tube is on one side of the reference plane, based on the adjustment direction, determining that the adjustment method of the flat film information is to scale the target scanning object in the flat film information” includes: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube increases, determining that the adjustment method of the flat film information is to reduce the size of the target scanning object in the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube decreases, determining that the adjustment method of the flat film information is to enlarge the size of the target scanning object in the flat film information.

[0104] In this embodiment, when the focus of the tube is on one side of the reference plane, that is, on the lower side of the reference plane, that is, below the bed surface of the scanning bed, if the adjustment direction of the scanning bed is the direction in which the distance between the bed surface of the scanning bed and the ground gradually increases, that is, the height of the scanning bed becomes higher, and the distance between the focus of the tube and the bed surface of the scanning bed becomes larger, then at this time, the size of the target scan object in the flat film information can be reduced as the adjustment method of the flat film information. On the contrary, if the adjustment direction of the scanning bed is the direction in which the distance between the bed surface of the scanning bed and the ground gradually decreases, that is, the height of the scanning bed becomes shorter, and the distance between the focus of the tube and the bed surface of the scanning bed becomes smaller, then at this time, the size of the target scan object in the flat film information can be enlarged as the adjustment method of the flat film information.

[0105] Specifically, the reduced and enlarged sizes can be determined in the following manner: a first distance and a second distance are calculated, wherein the first distance is the distance between the focus of the tube and the position center of the region of interest of the target scan object when acquiring the flat film information, and the second distance is the distance between the focus of the tube and the scanning center, and is also the distance between the position center of the region of interest of the target scan object and the focus of the stadium after the scanning bed is adjusted to the target bed height; a first adjustment size is determined based on the first distance and the second distance.

[0106] In this embodiment, when determining the size to be reduced or enlarged (i.e., the first adjustment size), the first distance and the second distance can be calculated respectively. Here, the first distance can be the difference between the height of the focus of the tube and the center of the position of the region of interest of the target scan object when obtaining the planar film information. Specifically, assuming that the height of the scanning bed when obtaining the planar film information is the initial bed height, the height of the center of the position of the region of interest of the target scan object when obtaining the planar film information can refer to the height of the center of the position of the region of interest of the target scan object from the ground at this time, that is, the initial bed height + target thickness / 2, then the first distance = tube focus height - initial bed height - target thickness / 2. At the same time, the second distance can be the difference between the focus of the tube and the height of the scanning center. Specifically, the height of the scanning center can be the actual physical height when the system is set. Since the scanning center coincides with the center of the position of the region of interest of the target scan object under the target bed height, the scanning center can also be the target bed height + target thickness / 2, then the second distance = tube focus height - target bed height - target thickness / 2. After determining the first distance and the second distance, the product of the first distance and the scan width and the ratio of the product to the second distance can be calculated, and finally the first adjustment size can be determined according to the ratio. Specifically, the first adjustment size can be determined based on the following formula: Among them, W dst For the first resizing, W ori is the scan width, D dst is the second distance, D ori is the first distance. Specifically, Figure 5 As shown in the figure, when the flat film information is obtained, the focus position of the tube is on one side of the reference plane, and when the patient is lying flat, the focus position of the tube remains unchanged. When the height of the scanning bed is the initial bed height, D ori is the distance between the focus position of the tube and the center of the patient's area of ​​interest at the initial bed height, i.e., the first distance, L is the actual width of the human body at the scanning position, D is the distance between the focus of the tube and the detector, and W ori is the scanning width of the target scanning object in the flat film information obtained at the initial bed height, then When the scanning bed height is the target bed height, D dst is the distance between the focus of the tube and the center of the patient's area of ​​interest when the target bed is high, that is, the second distance, L is the actual width of the human body at the scanning position, D is the distance between the focus of the tube and the detector, and W dst is the scanning width of the target scan object in the flat film information obtained when the target bed height is reached, that is, the first adjustment size. Among them, since the state of the target scanning object on the scanning bed remains unchanged, the actual width of the human body corresponding to the target scanning object also remains unchanged. After transformation, it can be obtained that D dst *Wdst =D*(L / 2) and D ori *W ori =D*(L / 2), then D ori *W ori =D dst *W dst Therefore, when adjusting the flat film information to the flat film information corresponding to the target bed height, the first adjustment size can be:

[0107] In an embodiment of the present application, optionally, a method for acquiring a scanning width of a target scanning object is as follows: identifying a first edge position and a second edge position of the region of interest indicated by the flat film information, and determining a scanning width of the target scanning object in the flat film information based on a difference between the first edge position and the second edge position.

[0108] In addition, the region of interest indicated in the flat film information can be further identified to determine the first edge position and the second edge position of the region of interest in the x-axis direction. The coordinate axis corresponding to the direction perpendicular to the ground can be set as the y-axis, the direction in which the scanning bed moves forward and backward can be set as the z-axis, and the other direction can be set as the x-axis. For example, if the target scan object lies flat on the scanning bed and the scanning position is the head, then the flat film is an anteroposterior film, and the first edge position and the second edge position in the x-axis direction on the flat film can be the positions of the patient's left ear and the patient's right ear on the flat film; if the target scan object lies sideways on the scanning bed and the scanning position is the head, then the flat film is a lateral film, and the first edge position and the second edge position in the x-axis direction on the flat film can be the positions of the patient's nose and the back of the head on the flat film. After the first edge position and the second edge position are identified on the region of interest, the difference between the first edge position and the second edge position can be calculated, and the difference between the first edge position and the second edge position can also be the difference in the number of pixels. The product calculated by the difference in the number of pixels and the real physical size corresponding to each pixel is used as the scanning width of the target scan object on the flat film.

[0109] In an embodiment of the present application, optionally, “if the focal position of the tube is on a reference plane, based on the adjustment direction, determining that the adjustment method of the flat film information is to translate the target scanning object in the flat film information” includes: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground increases, determining that the adjustment method of the flat film information is to translate the target scanning object in the flat film information toward a side away from the bed surface indicated by the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground decreases, determining that the adjustment method of the flat film information is to translate the target scanning object in the flat film information toward a side close to the bed surface indicated by the flat film information.

[0110] In this embodiment, when the focus position of the tube is on the reference plane, if the adjustment direction of the scanning bed is the direction in which the distance between the bed surface of the scanning bed and the ground gradually increases, that is, the height of the scanning bed becomes higher, then the adjustment method of the flat film information can be determined as translating the target scanning object in the flat film information to the side away from the bed surface indicated by the flat film information. On the contrary, if the adjustment direction of the scanning bed is the direction in which the distance between the bed surface of the scanning bed and the ground gradually decreases, that is, the height of the scanning bed becomes lower, then the adjustment method of the flat film information can be determined as translating the target scanning object in the flat film information to the side close to the bed surface indicated by the flat film information. For example, Figure 6 As shown, if the target scanning object lies flat on the scanning bed with the face facing upward, then the side close to the bed surface indicated by the flat film information is the back of the head side. At this time, if the scanning bed is adjusted in the direction of increasing height, then the target scanning object in the flat film information is translated toward the nose side. Conversely, if the scanning bed is adjusted in the direction of decreasing height, then the target scanning object in the flat film information is translated toward the back of the head side.

[0111] Specifically, the translation size may be determined in the following manner: calculating the difference between the target bed height and the scanning bed height corresponding to the flat film information being obtained, and determining the second adjustment size based on the ratio of the difference to the actual physical size.

[0112] In this embodiment, the translation size can be referred to as the second adjustment size. Figure 6 As shown, this film is a lateral film, and Dis is the second adjustment size, where the second adjustment size can be expressed by the number of pixels. For example, the second adjustment size = (initial bed height - target bed height) / the actual physical size represented by each pixel, then the second adjustment size is actually the number of pixels moved in the region of interest of the film. The initial bed height is the scanning bed height corresponding to the acquisition of the film information. The region of interest of the film is translated according to the second adjustment size to obtain the adjusted film information, that is, the target film information.

[0113] In the embodiment of the present application, optionally, the method further includes: based on the target bed height, automatically adjusting the scanning bed to move to the target bed height.

[0114] In this embodiment, after the target bed height is determined, the bed height of the scanning bed can be automatically adjusted to the target bed height. Specifically, the adjustment can be made after the target bed height is determined, or after the flat film information is adjusted, as long as the adjustment is made before scanning again according to the target flat film information.

[0115] In an exemplary embodiment, step 102 includes: based on the target bed height, updating the bed height and / or bed code in the flat film information to obtain the target flat film information.

[0116] After determining the target bed height, the bed height and / or bed code information in the flat film information can be adjusted and updated accordingly, so that the target flat film information can be obtained. In an embodiment of the present application, optionally, when the bed height of the scanning bed is adjusted from the initial bed height for obtaining the flat film information to the target bed height, if the scanning bed is vertically raised and lowered, then when the flat film information is adjusted, the updated flat film information may include the bed height information, and if the scanning bed is Z-shaped raised and lowered, then when the flat film information is adjusted, the updated flat film information may include the bed height information and the bed code information. Among them, the bed code of the scanning bed refers to the scale marked along the length of the scanning bed, which is the actual bed code. The bed code can be marked in a way that the scale gradually increases from the head of the bed to the foot of the bed, or in a way that the scale gradually increases from the foot of the bed to the head of the bed. For example, if the length of the scanning bed is 2 meters, then the bed code of the scanning bed can be marked as 0 mm-2000 mm from the head of the bed to the foot of the bed according to the millimeter interval. Figure 7 This is a schematic diagram corresponding to the Z-shaped lifting of the scanning bed. In this lifting mode, if the height of the scanning bed changes, the corresponding bed code of the scanning bed must also be changed. Assuming that the figure shows the side of the scanning bed (i.e., the left or right side of the patient when the target scanning object lies flat on the scanning bed), the initial bed height is greater than the target bed height, the vertical thin line is the scanning plane, and the corresponding dot at the initial bed height is the target scanning area of ​​the target scanning object. When the bed height of the scanning bed is adjusted to the target bed height, the target scanning area of ​​the target scanning object is changed not only in the direction perpendicular to the ground, but also in the direction parallel to the ground. At this time, if the target scanning area is scanned at the position corresponding to the scanning plane, the scanning bed can be moved to the left, that is, the bed code of the scanning bed is changed. Therefore, when the scanning bed is lifted in a Z-shaped manner, the updated flat film information can also include bed code information.

[0117] Further, as Figure 1 The specific implementation of the method, the embodiment of the present application provides a scanning device, such as Figure 8 As shown, the device comprises:

[0118] A target bed height acquisition module is used to acquire the flat film information of the target scan object and determine the target bed height based on the flat film information;

[0119] A flat film information adjustment module, used for adjusting the flat film information based on the target bed height to obtain target flat film information;

[0120] An execution module is used to perform subsequent operations according to the target flat film information.

[0121] Optionally, the target bed height acquisition module includes:

[0122] A position center determination unit, used for determining the position center of the region of interest of the target scan object in a target direction based on the flat film information, wherein the target direction is a direction perpendicular to the bed surface of the scanning bed;

[0123] The target bed height determination unit is used to determine the target bed height according to the positional relationship between the position center and the scanning center.

[0124] Optionally, the position center determination unit is used to: obtain a target thickness of the region of interest of the target scan object in the target direction based on the planar film information; determine the position center of the region of interest of the target scan object in the target direction based on the target thickness; wherein the planar film information includes an anteroposterior film and / or a lateral film.

[0125] Optionally, the position center determination unit is further used to: divide the region of interest indicated by the flat film information into multiple sub-regions in a feeding direction parallel to the scanning bed, and determine the sub-thickness corresponding to each sub-region; obtain an average of the multiple sub-thicknesses, and use the average as the target thickness of the region of interest of the target scanning object in the target direction.

[0126] Optionally, the flat sheet information adjustment module includes:

[0127] A first determining unit, configured to determine an adjustment direction of the scanning bed based on the target bed height;

[0128] A second determining unit, configured to determine an adjustment method of the flat sheet information based on the adjustment direction;

[0129] The third determining unit is used to adjust the flat film information based on the adjustment method to obtain target flat film information.

[0130] Optionally, the second determination unit is used to: obtain a tube focal position corresponding to the planar film information; if the tube focal position is on one side of a reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to scale a target scanning object in the planar film information; if the tube focal position is on the reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to translate a target scanning object in the planar film information; wherein the reference plane is a plane passing through the scanning center and parallel to the bed surface of the scanning bed.

[0131] Optionally, the second determining unit is further configured to: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube increases, determine that the adjustment method of the flat film information is to reduce the size of the target scanning object in the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube decreases, determine that the adjustment method of the flat film information is to enlarge the size of the target scanning object in the flat film information.

[0132] Optionally, the second determining unit is further used to: if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground increases, determine that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side away from the bed surface indicated by the flat film information; if the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground decreases, determine that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side close to the bed surface indicated by the flat film information.

[0133] Optionally, the scaling ratio of scaling the target scanning object in the planar film information and the translation distance of translating the target scanning object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when acquiring the planar film information.

[0134] Optionally, the flat film information adjustment module is further used to: based on the target bed height, update the bed height and / or bed code in the flat film information to obtain the target flat film information.

[0135] Optionally, the execution module is used to: select a positioning frame on the target flat film information; based on the positioning frame, obtain scanning parameter information, the scanning parameter information including a starting scanning position and an ending scanning position; after adjusting the actual bed height of the scanning bed based on the target bed height, perform an axial scan or a spiral scan based on the scanning parameter information.

[0136] It should be noted that for other corresponding descriptions of the functional units involved in a scanning device provided in an embodiment of the present application, reference can be made to Figures 1 to 7 The corresponding description in the method will not be repeated here.

[0137] Based on the above Figures 1 to 7 The method shown in the embodiment of the present application is accordingly provided with a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned Figures 1 to 7 Scanning method shown.

[0138] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0139] Based on the above Figures 1 to 7 The method shown, and Figure 8 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides a computer device, which can be a personal computer, a server, a network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figures 1 to 7 Scanning method shown.

[0140] Optionally, the computer device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0141] Those skilled in the art will appreciate that the computer device structure provided in this embodiment does not limit the computer device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0142] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages and saves the hardware and software resources of the computer device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the physical device.

[0143] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by hardware. By determining the target bed height of the scanning bed based on the flat film information, and then adjusting the flat film information based on the determined target bed height to obtain the target flat film information, the subsequent user can use the target flat film information for subsequent operations. The embodiment of the present application improves the adjustment efficiency while improving the quality of the scanned image, greatly improving the user experience.

[0144] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0145] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A scanning method, characterized in that: include: Acquire the plan view information of the target scanning object, and determine the target bed height of the scanning bed based on the plan view information; Based on the target bed height, determining the scanning bed adjustment direction; Based on the adjustment direction, determining an adjustment method of the flat sheet information; Based on the adjustment method, adjusting the flat film information to obtain target flat film information; Performing subsequent operations according to the target flat film information, wherein the subsequent operations include selecting a positioning frame and performing a spiral scan or an axial scan based on the positioning frame; The determining, based on the adjustment direction, an adjustment method of the flat sheet information includes: The focus position of the tube corresponding to the planar film information is obtained; if the focus position of the tube is on one side of a reference plane, based on the adjustment direction, it is determined that the adjustment method of the planar film information is to scale the target scanning object in the planar film information; if the focus position of the tube is on the reference plane, based on the adjustment direction, it is determined that the adjustment method of the planar film information is to translate the target scanning object in the planar film information; wherein the reference plane is a plane passing through a scanning center and parallel to a bed surface of the scanning bed.

2. The method according to claim 1, characterized in that The step of determining a target bed height based on the plan view information includes: Based on the flat film information, determining the position center of the region of interest of the target scan object in a target direction, wherein the target direction is a direction perpendicular to the bed surface of the scanning bed; The target bed height is determined according to the positional relationship between the position center and the scanning center.

3. The method according to claim 2, characterized in that The step of determining the position center of the region of interest of the target scan object in the target direction based on the flat film information includes: Based on the planar film information, obtaining a target thickness of the region of interest of the target scan object in the target direction; Based on the target thickness, determining the position center of the region of interest of the target scanning object in the target direction; The plain film information includes an anteroposterior film and / or a lateral film.

4. The method according to claim 3, characterized in that The step of obtaining a target thickness of the region of interest of the target scan object in the target direction based on the flat film information includes: Dividing the region of interest indicated by the flat film information into a plurality of sub-regions in a feeding direction parallel to the scanning bed, and determining a sub-thickness corresponding to each sub-region; An average value of the plurality of sub-thicknesses is obtained, and the average value is used as the target thickness of the region of interest of the target scanning object in the target direction.

5. The method according to claim 1, characterized in that If the focus position of the tube is on one side of the reference plane, determining, based on the adjustment direction, that the adjustment method of the planar film information is to scale the target scanning object in the planar film information includes: If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube increases, determining that the adjustment method of the flat film information is to reduce the size of the target scanning object in the flat film information; If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the focus of the tube decreases, the adjustment method of the flat film information is determined to be to enlarge the size of the target scanning object in the flat film information.

6. The method according to claim 1, characterized in that If the focus position of the tube is on the reference plane, determining, based on the adjustment direction, that the adjustment method of the planar film information is to translate the target scanning object in the planar film information includes: If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground increases, determining that the adjustment method of the flat film information is to translate the target scanning object in the flat film information to a side away from the bed surface indicated by the flat film information; If the adjustment direction is a direction in which the distance between the bed surface of the scanning bed and the ground decreases, the adjustment method of the flat film information is determined to be to translate the target scanning object in the flat film information to a side close to the bed surface indicated by the flat film information.

7. The method according to claim 1, characterized in that The scaling ratio of scaling the target scan object in the planar film information and the translation distance of translating the target scan object in the planar film information are both positively correlated with the difference between the target bed height and the actual bed height of the scanning bed when acquiring the planar film information.

8. The method according to claim 1, characterized in that The adjusting the flat film information based on the target bed height to obtain the target flat film information also includes: Based on the target bed height, the bed height and / or bed code in the flat film information is updated to obtain the target flat film information.

9. The method according to claim 1, characterized in that: The subsequent operation according to the target flat film information includes: Selecting a positioning frame on the target flat sheet information; Based on the positioning frame, acquiring scanning parameter information, the scanning parameter information including a starting scanning position and an ending scanning position; After the actual bed height of the scanning bed is adjusted based on the target bed height, an axial scan or a helical scan is performed based on the scanning parameter information.

10. A scanning device, characterized in that: include: A target bed height acquisition module is used to acquire the flat film information of the target scanning object and determine the target bed height of the scanning bed based on the flat film information; A first determining unit, configured to determine an adjustment direction of the scanning bed based on the target bed height; A second determining unit, configured to determine an adjustment method of the flat sheet information based on the adjustment direction; A third determining unit, configured to adjust the flat film information based on the adjustment method to obtain target flat film information; An execution module, used for performing subsequent operations according to the target flat film information, wherein the subsequent operations include selecting a positioning frame and performing a spiral scan or an axial scan based on the positioning frame; The second determination unit is used to: obtain the tube focus position corresponding to the planar film information; if the tube focus position is on one side of the reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to scale the target scanning object in the planar film information; if the tube focus position is on the reference plane, determine, based on the adjustment direction, that the adjustment method of the planar film information is to translate the target scanning object in the planar film information; wherein the reference plane is a plane passing through the scanning center and parallel to the bed surface of the scanning bed.

11. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

12. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 9 is implemented.

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