Organ program determination method and device, image device, medium and program product

Abstract

The embodiment of the invention discloses an organ program determination method and device, an image device, a medium and a program product. The method comprises the following steps: acquiring a to-be-detected target part of a target object and an initial position of the target object relative to a medical imaging device; obtaining size information of the target object; and in response to the change of a first current position of the target object relative to the medical imaging device relative to the initial position, determining an organ program of the medical imaging device based on the size information of the target object and the first current position, the organ program is used for defining operation parameters of the medical imaging device. The embodiment of the invention is simple in working process, simple and convenient to operate and relatively low in skill requirement on the user.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an organ program determination method and device for a medical imaging device. Background Art

[0002] Medical imaging devices are increasingly used in clinical diagnosis and treatment. For example, the mobile C-arm system is an X-ray product commonly used in operating rooms. It is widely used in orthopedic surgeries such as legs, shoulders, hands, feet, pelvis, spine, etc.

[0003] However, in reality, because traditional mobile C-arm systems can only release X-rays under limited power, the image quality of the patient's target organs is often poor.

[0004] Therefore, there is an urgent need for a method to improve the image quality of target organs based on the physical limitations of existing hardware, which requires a simple workflow, easy operation, and low user skill requirements. Summary of the invention

[0005] In view of this, according to one aspect of the present disclosure, a method for determining an organ program for a medical imaging device is provided. The method for determining an organ program for a medical imaging device comprises: obtaining a target part to be measured of a target object and an initial position of the target object relative to the medical imaging device; obtaining size information of the target object; and in response to a change in a first current position of the target object relative to the medical imaging device relative to the initial position, determining an organ program of the medical imaging device based on the size information of the target object and the first current position, wherein the organ program is used to define operating parameters of the medical imaging device.

[0006] According to another aspect of the present disclosure, an organ program determination device for a medical imaging device is provided. The organ program determination device for a medical imaging device comprises: a first acquisition module, used to acquire a target part to be measured of a target object and an initial position of the target object relative to the medical imaging device; a second acquisition module, used to acquire size information of the target object; and an organ program determination module, used to determine an organ program of the medical imaging device based on the size information of the target object and the first current position in response to a change in a first current position of the target object relative to the medical imaging device relative to the initial position, wherein the organ program is used to define an operating parameter of the medical imaging device.

[0007] According to another aspect of the present disclosure, a medical imaging device is provided, the medical imaging device is connected to at least one processor and at least one memory, and a computer program is stored in the at least one memory. When the computer program is executed by the at least one processor, the at least one processor executes an organ program determination method for the medical imaging device.

[0008] According to yet another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor executes an organ program determination method for a medical imaging device.

[0009] According to yet another aspect of the present disclosure, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the processor is caused to execute an organ program determination method for a medical imaging device.

[0010] In the technical solution of the embodiment of the present disclosure, the workflow of determining the organ program of the medical imaging device is simple, easy to operate, and has low requirements on user skills.

[0011] These and other aspects of the disclosure will be apparent from and elucidated with reference to the embodiments described hereinafter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can better understand the above and other features and advantages of the present invention. In the accompanying drawings:

[0013] Figure 1 is a schematic diagram illustrating an example medical imaging system in which the various methods described herein may be implemented according to an exemplary embodiment;

[0014] Figure 2 A flowchart illustrating a method for determining an organ program for a medical imaging device according to an exemplary embodiment;

[0015] Figure 3 To illustrate a method according to an exemplary embodiment Figure 2 A flowchart of some example processes in the method;

[0016] Figure 4 is a schematic diagram illustrating a human body elliptical model according to an exemplary embodiment;

[0017] Figure 5 A schematic block diagram illustrating an organ program determination device for a medical imaging device according to an exemplary embodiment; and

[0018] Figure 6A block diagram is shown that illustrates an exemplary computer device that can be used in the exemplary embodiments.

[0019] The reference numerals are as follows:

[0020]

[0021]

[0022] DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present disclosure, specific embodiments of the present disclosure are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0024] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0025] In order to simplify the drawings, only the parts related to the present disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0026] In this article, "one" not only means "only one", but also means "more than one". In this article, "first", "second", etc. are only used to distinguish each other, rather than to indicate their importance and order, or the premise of each other's existence.

[0027] It should be understood that the "system", "device", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0028] Flowcharts are used in this disclosure to illustrate the operations performed by the system according to the embodiments of the present disclosure. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0029] In some embodiments, in order to obtain the best image quality during the image capture process of the patient, an imaging protocol is usually preset for the user in the medical imaging device, and the user can manually select the imaging protocol. A plurality of imaging protocols are predefined for different measurement parts, patient sizes, and patient positions. These imaging protocols are usually related to the operating parameters to be implemented by the control device of the medical imaging device, such as the frame rate, radiation dose, noise processing, and signal post-processing of the X-ray generator, so that the user can provide the clearest image shooting mode based on the target part of the patient that currently needs to be captured. This imaging protocol is also referred to as an "organ program (OGP, Organ Program)" in particular in medical imaging devices. Therefore, the term "organ program" will be used uniformly below to represent the imaging protocol.

[0030] However, it often happens in daily practice that when photographing the anteroposterior or lateral position of the spine, due to the large thickness and width of the chest or abdominal cavity, and the limited transmission power of the X-ray, the operator of the medical imaging device is often unable to select the best organ program for the image capturing process. Since the shooting may be during the operation, when shooting in different positions, the operator focuses his attention on the patient, and he may not realize that using other organ programs may provide better image capturing effects.

[0031] In response to the above problems, some embodiments of the present disclosure provide an organ program determination method for a medical imaging device, which automatically selects a suitable preset organ program from a plurality of predefined organ programs if the patient's position changes during surgery.

[0032] Exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0033] Figure 1 is a schematic diagram illustrating an example medical imaging system 100 in which the various methods described herein may be implemented according to an exemplary embodiment.

[0034] refer to Figure 1 , the medical imaging system 100 includes a medical imaging device 110, a network 120, a processor 140, and one or more memories 150. In some embodiments, the system 100 may further include one or more terminals 130. The various components in the system 100 may be interconnected via the network 120. For example, the medical imaging device 110 and the processor 140 may be connected or communicated via the network 120. In some embodiments, the various components in the system 100 may be directly interconnected via cables (not shown).

[0035] In some embodiments, the medical imaging device 110 can collect data on the target object to obtain a medical image of the target part of the target object. In some embodiments, the medical imaging device 110 can include a digital X-ray imaging device, a computer tomography scanner, etc. Exemplarily, the medical imaging device 110 is described by taking a mobile C-arm in a digital X-ray imaging device as an example. For example, the target object (e.g., a patient) 160 can lie flat on a scanning bed 170 with the face facing up, and the C-arm has a rotating motion component (C-arm) 180, which can rotate around the center of the C-arm arc (i.e., Figure 1 The rotational motion component 180 can be rotated around the x-axis in the image processing apparatus to capture different positions of the target object (e.g., patient) 160, such as the front position, the side position, etc. In some embodiments, the rotational motion component 180 can also rotate around the x-axis in the image processing apparatus. Figure 1 The rotation of the rotating moving part 180 is carried out along the y-axis or z-axis, or is translated along the y-axis. For example, the rotation of the rotating moving part of the mobile C-arm machine around the x-axis is used as an example to explain in detail. In addition, an X-ray generator 190 and a detector 195 for receiving X-rays are installed on the rotating moving part 180.

[0036] The network 120 may include any suitable network capable of facilitating information and / or data exchange of the medical imaging system 100. In some embodiments, at least one component of the system 100 (e.g., the medical imaging device 110, the processor 140, the memory at least one terminal 130) may exchange information and / or data with at least one other component in the system 100 through the network 120. For example, the processor 140 may obtain image information from the medical imaging device 110 through the network 120. For another example, the processor 140 may obtain user (e.g., operating doctor) instructions from at least one terminal 130 through the network 120. Examples of the network 120 include a local area network (LAN), a wide area network (WAN), a personal area network (PAN), and / or a combination of communication networks such as the Internet. The network 120 may be a wired or wireless network.

[0037] In some embodiments, at least one terminal 130 may communicate and / or connect with the medical imaging device 110, the processor 140, and / or the memory 150. For example, at least one terminal 130 may obtain a suitable organ program for the target part from the processor 140, or obtain the acquired image information from the medical imaging device 110. For another example, at least one terminal 130 may obtain an operation instruction from a user, and then send the operation instruction to the medical imaging device 110 to control it (such as inputting basic information of the target object, setting working parameters of the medical imaging device, etc.). In some embodiments, at least one terminal 130 may include a mobile display device, a tablet computer, a laptop computer, etc., or any combination thereof. In some embodiments, at least one terminal 130 may include an input device, an output device, etc. The input device may include alphanumeric and other keys for inputting control instructions to control the medical imaging device 110. The input device may select keyboard input, touch screen input, voice input, or any other similar input mechanism. Other types of input devices may include a cursor control device, such as a mouse, etc. The output device may include a display, a speaker, a printer, etc., or any combination thereof, for outputting the medical image acquired by the medical imaging device 110. In some embodiments, the terminal 130 may be a part of the medical imaging device 110 .

[0038] The processor 140 may process data and / or instructions and / or computer programs obtained from the medical imaging device 110 , the memory 150 , the at least one terminal 130 , or other components of the system 100 .

[0039] The memory 150 may store data, instructions and / or any other information. In some embodiments, the memory 150 may store image information collected by the medical imaging device 110. In some embodiments, the memory 150 may store data obtained from the medical imaging device 110, at least one terminal 130 and / or the processor 140. In some embodiments, the memory 150 may also store a statistical database of size information for the target part. In some embodiments, the memory 150 may store data, instructions or computer programs used by the processor 140 to execute or use to complete the exemplary methods described in this application. In some embodiments, the memory 150 may include a large capacity memory, a removable memory, a volatile read-write memory, a read-only memory (ROM), etc. or any combination thereof. Exemplary large capacity memory may include a disk, an optical disk, a solid-state disk, etc. Exemplary removable memory may include a flash drive, a floppy disk, an optical disk, a memory card, a compressed disk, a tape, etc. Exemplary volatile read-write memory may include a random access memory (RAM). In some embodiments, the memory 150 may be implemented on a cloud platform.

[0040] In some embodiments, the memory 150 may be connected to the network 120 to communicate with at least one other component in the system 100 (e.g., the processor 140, at least one terminal 130). At least one component in the system 100 may access data or instructions stored in the memory 150 through the network 120. In some embodiments, the memory 150 may be part of the processor 140.

[0041] Figure 2 FIG. 1 is a flowchart illustrating a method 200 for determining an organ procedure for a medical imaging device according to an exemplary embodiment.

[0042] Method 200 can be Figure 1 The medical imaging system 100 shown in FIG. 2 is executed, that is, the execution body of each step of the method 200 may be Figure 1 The medical imaging system 100 shown in FIG. 2 is shown in FIG. 2 . In the following, the steps of the method 200 are described in detail by taking the medical imaging system 100 as an example.

[0043] refer to Figure 2 , method 200 includes steps S220 to S240, and may also include step S210 and / or step S250.

[0044] In step S210, obtain Figure 1 The basic information of the target object (patient) in the medical imaging device is inputted by at least one terminal 130 (for example, manually inputted by an operating doctor), and the basic information includes at least one of the following items: age, gender, etc. In some embodiments, step S210 may also be omitted, and the method 200 directly starts from step S220, thereby skipping the input of the basic information of the target object and quickly starting the medical imaging device.

[0045] In step S220, the target part to be measured of the target object and the initial position of the target object relative to the medical imaging device are obtained. As an example, the target part to be measured of the target object may be the patient's legs, shoulders, hands, feet, pelvis, spine, etc. In this article, the term "initial position" refers to an imaging position. As an example, the initial position of the target object relative to the medical imaging device may be an upright position, a prone position, a left side position, a right side position, or a sitting position, etc. It should be understood that other initial positions are also feasible and the present disclosure does not limit this. In some embodiments, the target part to be measured of the target object and the initial position of the target object relative to the medical imaging device can be obtained by Figure 1At least one terminal 130 in the step is manually input by the operating doctor, and in step S210, the target part to be measured of the target object manually input by the operating doctor and the initial position of the target object relative to the medical imaging device are obtained. In some embodiments, the target part to be measured of the target object and the initial position of the target object relative to the medical imaging device can also be determined by capturing information of the target object by a three-dimensional camera or scanning the target object by a laser rangefinder. In step S210, the information captured by capturing information of the target object by a three-dimensional camera or scanning the target object by a laser rangefinder is obtained, and the target part to be measured of the target object and the initial position of the target object relative to the medical imaging device are determined.

[0046] In step S230, the size information of the target object is obtained. In some embodiments, the size information of the target object may include the height and weight of the target object. In some embodiments, the size information of the target object may include the thickness and width of the target object. For example, when the target part to be photographed is the chest cavity and the photographing position is the frontal position, the size information may be the thickness of the chest cavity. For another example, when the target part to be photographed is the abdominal cavity and the photographing position is the lateral position, the size information may be the width of the abdominal cavity. As an example, the height and weight of the target object may be obtained by distributing the size information on the support member (e.g., Figure 1 In some embodiments, the one or more pressure sensors or weight sensors 175 may be embedded in the scanning bed 170. In some embodiments, the one or more pressure sensors or weight sensors 175 may be laid flat on the surface of the scanning bed 170. For example, the weight of the target object may be directly measured by one or more pressure sensors or weight sensors 175. For example, for measuring the height of the target object, when the target object lies flat or sideways on the scanning bed 170 on which one or more pressure sensors or weight sensors 175 are distributed, the pressure sensor or weight sensor 175 cannot obtain any measurement value for the area above the head and below the feet of the target object, so the height of the target object can be inferred from the area where the value can be obtained (i.e., the area where the pressure sensor or weight sensor has a reading). As an example, the thickness and width of the target object can be determined by the data obtained by photographing the target object with a three-dimensional camera or scanning the target object with a laser rangefinder. For example, the three-dimensional camera infers the thickness and width of the target object by comparing the size of the target object photographed in the photo with the size of the scanning bed. For another example, a laser rangefinder calculates the thickness and width of a target object by comparing the laser light reflected from the surface of the target object with the laser light reflected from the plane of a scanning bed.

[0047] In step S240, in response to the change of the first current position of the target object relative to the medical imaging device relative to the initial position, the organ program of the medical imaging device is determined based on the size information of the target object and the first current position, and the organ program is used to define the operating parameters of the medical imaging device. In some embodiments, the first current position of the target object relative to the medical imaging device is the first current position of the target object relative to the rotating motion component. Here, taking the C-arm machine as an example, the first current position refers to the current position of the patient after the initial position of the C-arm of the C-arm machine changes. As an example, the operating parameters of the medical imaging device may include image capture parameters, such as dose, tube voltage, pulse length, image frequency, detector resolution, detector mode, tube focus selection, etc. in the X-ray device, and / or image analysis parameters, such as local mode, subtraction mode, general image superposition (e.g., perspective data set and 3D image data set), image-based or temporal noise suppression mode, frequency-dependent contrast increase and / or contrast reduction, image dynamics management, image clarity, etc. In particular, the operating parameters of the medical imaging device include exposure parameters for perspective or shooting of the medical imaging device. In addition, for short, obese patients and tall, slender patients, the selected organ procedures may be different due to the size difference between the two. For example, if the target object is a patient with a height of 180 cm and a weight of 200 catties, and the initial position is the frontal position (i.e. the patient is lying in the frontal position, face up), during the operation, the doctor wants to take a picture of the patient's right side, so he starts the C-arm orbit. Figure 1 The x-axis in the image is rotated 90° clockwise, that is, the position of the C-arm is adjusted to a position capable of photographing the right side of the patient, while the patient does not move. At this time, the first current position is the current position of the patient relative to the C-arm after the rotation of 90°. At this time, the first current position (right side) changes relative to the initial position (upright position). Therefore, based on the patient's size information and the first current position, the system automatically selects the most appropriate organ program, that is, the organ program suitable for the current height and weight and right side, from the system with multiple organ programs predefined.

[0048] In step S250, in response to the second current position of the target object relative to the medical imaging device changing relative to the first current position, the organ program of the medical imaging device is re-determined based on the size information of the target object and the second current position. In some embodiments, the second current position of the target object relative to the medical imaging device is the second current position of the target object relative to the rotating motion component. For example, after the patient with a height of 180 cm and a weight of 200 catties is photographed in the right side, the doctor wants to photograph the patient's left side, so the C-arm orbit is started again. Figure 1The x-axis line in the image is rotated 180° clockwise, that is, the position of the C-arm is adjusted to a position capable of photographing the patient's left side, while the patient does not move. At this time, the second current position is the current position of the patient relative to the C-arm after it is rotated 180°. Therefore, based on the patient's size information and the second current position, the system automatically selects the most suitable organ program, that is, the organ program suitable for the current height and weight and the left side, from the system with multiple organ programs predefined. If the C-arm of the C-arm does not change position relative to the patient again after the C-arm machine photographs the target object in the first current position, step S250 can also be omitted. Of course, after executing step S250, if it is detected that the C-arm of the C-arm changes position relative to the patient again, step S250 can be repeated.

[0049] In some embodiments, since the scanning bed 170 on which the patient lies does not move or rotate during the photographing process, and the C-arm of the C-arm machine rotates, the first current position or the second current position can be determined by the position of the patient after rotation relative to the C-arm. Figure 1 185), determine the current angular position of the rotating motion component to obtain the first current position or the second current position of the target object relative to the rotating motion component; or determine the first current position or the second current position of the target object relative to the rotating motion component through a picture taken by a three-dimensional camera.

[0050] Method 200 simplifies the workflow, facilitates operation, and reduces user skill requirements by automatically selecting a suitable organ program for the user based on the size information of the target object and the position change of the target object relative to the medical imaging device, so that the user can focus on examining or treating the patient without worrying about using an inappropriate organ program that will result in poor image capture results.

[0051] Figure 3 To illustrate a method according to an exemplary embodiment Figure 2 A flowchart of a portion of an exemplary process in method 200. Figure 3 As shown, according to some embodiments, step S240, determining an organ program of the medical imaging device, where the organ program is used to define the operating parameters of the medical imaging device, may include:

[0052] Step S310, determining the X-ray penetration depth of the target part to be measured of the target object based on the size information of the target object; and

[0053] Step S320: Determine exposure parameters for perspective or photography of a medical imaging device based on the penetration depth.

[0054] According to some embodiments, the X-ray penetration depth may be the path length of the X-ray central beam through the body. For example, when photographing the thoracic spine in the frontal position, the X-ray penetration depth is the time from when the X-rays emitted by the X-ray generator reach the skin on the upper surface of the chest. After the X-ray beam penetrates the skin, it passes through the tissue and reaches the thoracic spine, and finally is emitted from the skin on the lower surface of the chest. The length of the path from the skin on the upper surface of the chest to the skin on the lower surface of the chest is the X-ray penetration depth. Therefore, the X-ray penetration depth of the target part to be measured of the target object is usually closely related to the size information of the target object. When photographing the same part and the same body position, the larger the size of the target object, the greater the X-ray penetration depth of the target part to be measured.

[0055] According to some embodiments, the size of the exposure parameter of the medical imaging device for perspective or photography is generally related to the X-ray penetration depth. The greater the X-ray penetration depth, the longer the path length of the X-ray central beam through the body is, and the corresponding exposure parameter often needs to be increased.

[0056] According to some embodiments, step S310, determining the X-ray penetration depth of the target part to be measured of the target object based on the size information of the target object may include: based on the height and weight of the target object, obtaining the anatomical thickness of the target part to be measured from a lookup table to obtain the X-ray penetration depth. As described in step S230, in some embodiments, the size information of the target object may include the height and weight of the target object. Therefore, the anatomical thickness of the target part to be measured of the target object may be derived from the two parameters of the height and weight of the target object by using a lookup table based on a human size database. In some embodiments, the anatomical thickness of the target part may be equivalent to the X-ray penetration depth of the target part to be measured. For example, referring to Figure 1 , the anatomical thickness of the target site (thoracic spine, oblique lateral view) is h.

[0057] According to some embodiments, the lookup table is generated based on a standard statistical database, and the standard statistical database provides the size information of each target part to be measured according to the national standard for target objects of different heights and weights. In some embodiments, the standard statistical database can be generated according to the national standard GB / T 10000-1988 (Chinese adult human body size). The national standard provides the width and thickness of different parts to be measured (e.g., chest, buttocks, hands, legs, etc.) for different heights and weights. For example, for a male with a height of 181 cm and a weight of 83 kg, the thickness and width of the chest cavity are 261 mm and 331 mm, respectively. Therefore, when the male takes the thoracic spine in the positive position, the anatomical thickness and X-ray penetration depth of the target part to be measured are 261 mm. And when the male takes the thoracic spine in the left position, the anatomical thickness and X-ray penetration depth of the target part to be measured are 331 mm.

[0058] For positions other than anteroposterior and lateral (such as Figure 1 The anatomical thickness of the target part to be measured can be obtained based on the human body elliptical model. Figure 4 , the target part to be measured of the target object can be regarded as an elliptical model. For example, Figure 4 Take the chest cavity as an example. For example, as mentioned above, for a male with a height of 181 cm and a weight of 83 kg, the thickness and width of his chest cavity can be obtained from the lookup table. At this time, the cross section of his chest cavity is considered as follows: Figure 4 The ellipse with major axis a and minor axis b shown, the outline of the thorax has been determined. Figure 1 In the oblique lateral position, the anatomical thickness h at this time can be determined based on the angle α between the central X-ray beam emitted by the X-ray generator 190 and the long axis a.

[0059] According to some embodiments, the lookup table is generated based on an optimized statistical database, which provides size information of each target part to be measured for different target objects based on the standard statistical database in terms of different ages and body shape differences (such as considering the body shape differences of humans in Europe, America and Asia). For example, the optimized statistical database can be a database that optimizes the standard statistical database using a large amount of population data. The large amount of population data can include data such as the patient's height, weight, body size, gender, etc. By optimizing the standard statistical database, the number of samples is increased, so that the anatomical thickness of the target part to be measured can be obtained from the lookup table for patients of different heights and weights more accurately, which is more conducive to determining the appropriate organ program of the medical imaging device.

[0060] Alternatively, as described in step S230, in some embodiments, the size information of the target object may include the thickness and width of the target object, and the thickness and width of the target object may be determined by data obtained by photographing the target object with a three-dimensional camera or scanning the target object with a laser rangefinder. Therefore, according to some embodiments, step S310, based on the size information of the target object, determines the X-ray penetration depth of the target part to be measured of the target object, and may also directly obtain the thickness and width of the target object through a three-dimensional camera or a laser rangefinder, and then derive the anatomical thickness of the target part to be measured of the target object according to the elliptical model, that is, the X-ray penetration depth. At this time, there is no need to obtain the anatomical thickness of the target part to be measured from the lookup table.

[0061] Figure 4 To illustrate a method according to an exemplary embodiment Figure 3 A flowchart of some example processes in the method. Figure 4 As shown, according to some embodiments, step S320, determining the exposure parameters of the medical imaging device for perspective or photography based on the penetration depth may include:

[0062] Step S410, determining the X-ray dose absorbed by the target part to be measured according to the penetration depth;

[0063] Step S420, calculating the exposure point according to the X-ray dose absorbed by the target part to be measured, the dose lost in the X-ray optical path of the medical imaging device, and the dose expected to reach the detector;

[0064] Step S430: Determine the voltage and current of the X-ray generator based on the exposure point and the preset perspective curve.

[0065] According to some embodiments, the X-ray dose absorbed by the target part to be measured is often positively correlated with the X-ray penetration depth. In some embodiments, the dose emitted from the X-ray generator 190 needs to penetrate the object in the beam path and then hit the X-ray detector 195 to generate an image. Specifically, the sum of the X-ray dose absorbed by the target part to be measured, the dose lost in the X-ray optical path of the medical imaging device, and the dose reaching the X-ray detector 195 is the dose emitted from the X-ray generator 190. The relationship between the X-ray dose absorbed by the target part to be measured and the dose emitted by the X-ray generator 190 is as follows:

[0066] The dose emitted by the X-ray generator 190 = the X-ray dose absorbed by the target part to be measured + the dose absorbed by other components in the optical path + the dose reaching the X-ray detector 195

[0067] The dose used in the above relationship can be converted into a water value, that is, the corresponding absorbed water thickness, which is an approximate value. In this article, the term "exposure point" is a parameter introduced to simplify the calculation. There is the following conversion relationship between the exposure point and the dose emitted by the X-ray generator 190:

[0068] The exposure point of X-ray generator 190 = the water value of the target part to be measured + the water value absorbed by other components in the optical path + the water value corresponding to the dose reaching X-ray detector 195

[0069] For the same system, the water values ​​absorbed by other components in the optical path can be queried from a preset table. The preset table is the result of advance measurement. The dose reaching the X-ray detector 195 can be preset and configured in the organ program. The anatomical thickness and the water value of the target part to be measured can be approximately linear. According to the anatomical thickness and the preset water value corresponding to the dose reaching the X-ray detector 195, the exposure point required by the X-ray generator 190 can be determined. In some embodiments, a perspective curve is preset, and the exposure point corresponding to the dose of the X-ray generator 190 is found by using the perspective curve, and the tube voltage and tube current of the X-ray generator 190 can be determined. The medical imaging device 110 uses the tube voltage and tube current for perspective or single image shooting.

[0070] Figure 5 FIG. 5 is a schematic block diagram illustrating an organ program determination device 500 for a medical imaging device according to an exemplary embodiment.

[0071] like Figure 5 As shown, the organ program determination device 500 for a medical imaging device includes: a first acquisition module 510 , a second acquisition module 520 and an organ program determination module 530 .

[0072] The first acquisition module 510 is configured to acquire the target part to be measured of the target object and the initial position of the target object relative to the medical imaging device.

[0073] The second acquisition module 520 is configured to acquire size information of the target object.

[0074] The organ program determination module 530 is configured to determine the organ program of the medical imaging device in response to a change in a first current position of the target object relative to the initial position of the medical imaging device, based on the size information of the target object and the first current position, wherein the organ program is used to define the operating parameters of the medical imaging device.

[0075] It should be understood that Figure 5 The various modules of the apparatus 500 shown in FIG. 5 can be used in conjunction with the reference Figure 2 The steps S220-S240 in the method 200 described above correspond to each other. Therefore, the operations, features and advantages described above for the method 200 are also applicable to the apparatus 500 and the modules included therein. For the sake of brevity, some operations, features and advantages are not described in detail here.

[0076] Although specific functions are discussed above with reference to specific modules, it should be noted that the functions of the various modules discussed herein may be divided into multiple modules, and / or at least some functions of multiple modules may be combined into a single module. The specific module discussed herein performing an action includes the specific module itself performing the action, or alternatively the specific module calling or otherwise accessing another component or module that performs the action (or performs the action in conjunction with the specific module). Therefore, the specific module that performs an action may include the specific module itself that performs the action and / or another module that the specific module calls or otherwise accesses to perform the action.

[0077] It should also be understood that various techniques may be described herein in the general context of software hardware elements or program modules. Figure 5The modules described may be implemented in hardware or in hardware in combination with software and / or firmware. For example, these modules may be implemented as computer program codes / instructions configured to be executed in one or more processors and stored in a computer-readable storage medium. Alternatively, these modules may be implemented as hardware logic / circuits. For example, in some embodiments, one or more of the first acquisition module 510, the second acquisition module 520, and the organ program determination module 530 may be implemented together in a system on chip (SoC). SoC may include an integrated circuit chip (which includes a processor (e.g., a central processing unit (CPU), a microcontroller, a microprocessor, a digital signal processor (DSP), etc.), a memory, one or more communication interfaces, and / or one or more components in other circuits), and may optionally execute the received program code and / or include embedded firmware to perform functions.

[0078] According to one aspect of the present disclosure, a computer device is provided, which includes at least one memory, at least one processor, and a computer program stored in the at least one memory. The at least one processor is configured to execute the computer program to implement the steps of any method embodiment described above. A medical imaging system may include the computer device.

[0079] According to one aspect of the present disclosure, a medical imaging device is provided, the medical imaging device is connected to at least one processor and at least one memory, a computer program is stored in the at least one memory, and the at least one processor is configured to execute the computer program to implement the steps of any method embodiment described above.

[0080] According to one aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any method embodiment described above are implemented.

[0081] According to one aspect of the present disclosure, a computer program product is provided, which includes a computer program. When the computer program is executed by a processor, the steps of any method embodiment described above are implemented.

[0082] In the following, combined Figure 6 Illustrative examples of such a computer device, computer-readable storage medium, and computer program product are described.

[0083] Figure 6 An example configuration of a computer device 600 that can be used to implement the methods described herein is shown. For example, Figure 1 The medical imaging system 100 shown in FIG. 1 may include an architecture similar to the computer device 600. The above-mentioned apparatus 500 may also be implemented in whole or at least in part by the computer device 600 or a similar device or system.

[0084] The computer device 600 may include at least one processor 602, memory 604, communication interface(s) 606, a display device 608, other input / output (I / O) devices 610, and one or more mass storage devices 612, all capable of communicating with one another, such as via a system bus 614 or other appropriate connections.

[0085] The processor 602 may be a single processing unit or multiple processing units, all of which may include a single or multiple computing units or multiple cores. The processor 602 may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuits, and / or any device that manipulates signals based on operating instructions. Among other capabilities, the processor 602 may be configured to obtain and execute computer-readable instructions stored in the memory 604, mass storage device 612, or other computer-readable media, such as program code of an operating system 616, program code of an application program 618, program code of other programs 620, and the like.

[0086] The memory 604 and the mass storage device 612 are examples of computer-readable storage media for storing instructions that are executed by the processor 602 to implement the various functions described above. For example, the memory 604 may generally include both volatile memory and non-volatile memory (e.g., RAM, ROM, etc.). In addition, the mass storage device 612 may generally include a hard drive, a solid-state drive, a removable medium, including external and removable drives, a memory card, a flash memory, a floppy disk, an optical disk (e.g., a CD, a DVD), a storage array, a network attached storage, a storage area network, etc. The memory 604 and the mass storage device 612 may all be collectively referred to herein as memory or computer-readable storage media, and may be a non-transitory medium capable of storing computer-readable, processor-executable program instructions as computer program code, which may be executed by the processor 602 as a specific machine configured to implement the operations and functions described in the examples herein.

[0087] A number of programs may be stored on mass storage device 612. These programs include operating system 616, one or more application programs 618, other programs 620, and program data 622, and they may be loaded into memory 604 for execution. Examples of such applications or program modules may include, for example, computer program logic (e.g., computer program code or instructions) for implementing the following components / functions: method 200 (including any suitable steps of method 200), and / or additional embodiments described herein.

[0088] Although in Figure 6 604 of the computer device 600, but modules 616, 618, 620, and 622, or portions thereof, may be implemented using any form of computer-readable media accessible by the computer device 600. As used herein, "computer-readable media" includes at least two types of computer-readable media, namely, computer-readable storage media and communication media.

[0089] Computer-readable storage media include volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information, such as computer-readable instructions, data structures, program modules or other data. Computer-readable storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD), or other optical storage device, magnetic cassette, magnetic tape, magnetic disk storage device or other magnetic storage device, or any other non-transmission medium that can be used to store information for access by a computer device. In contrast, communication media can embody computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism. Computer-readable storage media defined herein do not include communication media.

[0090] One or more communication interfaces 606 are used to exchange data with other devices, such as through a network, direct connection, etc. Such communication interfaces can be one or more of the following: any type of network interface (e.g., a network interface card (NIC)), a wired or wireless (such as IEEE 802.11 wireless LAN (WLAN)) wireless interface, a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth™ interface, a Near Field Communication (NFC) interface, etc. The communication interface 606 can facilitate communication within a variety of network and protocol types, including wired networks (e.g., LAN, cable, etc.) and wireless networks (e.g., WLAN, cellular, satellite, etc.), the Internet, etc. The communication interface 606 can also provide communication with external storage devices (not shown) such as storage arrays, network attached storage, storage area networks, etc.

[0091] In some examples, a display device 608 such as a monitor may be included for displaying information and images to the user. Other I / O devices 610 may be devices that receive various inputs from the user and provide various outputs to the user, and may include a touch input device, a gesture input device, a camera, a keyboard, a remote control, a mouse, a printer, an audio input / output device, and the like.

[0092] The technology described herein can be supported by these various configurations of the computer device 600, and is not limited to the specific examples of the technology described herein. For example, the functionality can also be implemented in whole or in part on the "cloud" by using a distributed system. The cloud includes and / or represents a platform for resources. The platform abstracts the underlying functionality of the hardware (e.g., server) and software resources of the cloud. Resources can include applications and / or data that can be used when performing computing processing on a server away from the computer device 600. Resources can also include services provided over the Internet and / or through a subscriber network such as a cellular or Wi-Fi network. The platform can abstract resources and functions to connect the computer device 600 to other computer devices. Therefore, the implementation of the functions described herein can be distributed throughout the cloud. For example, the functions can be implemented partially on the computer device 600 and partially through a platform that abstracts the functions of the cloud.

[0093] Although the present disclosure has been illustrated and described in detail in the drawings and the foregoing description, such illustration and description should be considered illustrative and exemplary rather than restrictive; the present disclosure is not limited to the disclosed embodiments. By studying the drawings, the disclosure and the appended claims, those skilled in the art will be able to understand and implement variations to the disclosed embodiments when practicing the claimed subject matter. In the claims, the word "comprising" does not exclude other elements or steps that are not listed, and the term "based on" should be interpreted as "based at least in part on". The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0094] The above descriptions are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining an organ program for a medical imaging device, the method comprising: Acquire a target part to be measured of a target object and an initial position of the target object relative to a medical imaging device; Obtaining size information of the target object; as well as In response to a change in a first current position of the target object relative to the initial position of the medical imaging device, an organ program of the medical imaging device is determined based on size information of the target object and the first current position, wherein the organ program is used to define operating parameters of the medical imaging device.

2. The method according to claim 1, further comprising: In response to a change in a second current position of the target object relative to the medical imaging device relative to the first current position, the organ program of the medical imaging device is re-determined based on the size information of the target object and the second current position.

3. The method according to claim 1 or 2, wherein: The operating parameters include exposure parameters of the medical imaging device for perspective or photography, and determining the organ program of the medical imaging device includes: Determining the X-ray penetration depth of the target part to be measured of the target object based on the size information of the target object; and Based on the penetration depth, the exposure parameters are determined.

4. The method according to claim 3, wherein: The size information of the target object includes the height and weight of the target object, and based on the size information of the target object, determining the X-ray penetration depth of the target part to be measured of the target object includes: Based on the height and weight of the target object, the anatomical thickness of the target part to be measured is obtained from a lookup table to obtain the X-ray penetration depth.

5. The method according to claim 3, wherein: The medical imaging device includes an X-ray generator and a detector for receiving X-rays, and based on the penetration depth, determines the exposure parameter, including: Determining the X-ray dose absorbed by the target part to be measured according to the penetration depth; Calculating the exposure point according to the X-ray dose absorbed by the target part to be measured, the dose lost in the X-ray optical path of the medical imaging device, and the dose expected to reach the detector; Based on the exposure point and a preset perspective curve, the voltage and current of the X-ray generator are determined.

6. The method according to claim 1 or 2, wherein: Obtaining the size information of the target object includes: Acquiring information collected by a plurality of pressure sensors or weight sensors, wherein the plurality of pressure sensors or weight sensors are distributed in a support member for carrying the target object; Determining the weight and height of the target object based on the information collected by the multiple pressure sensors or weight sensors; and Based on the weight and height of the target object, the size information of the target object is estimated according to a statistical database.

7. The method according to claim 1 or 2, wherein: Obtaining the size information of the target object includes: Acquiring data obtained by photographing the target object with a three-dimensional camera or scanning the target object with a laser rangefinder; Based on the data, size information of the target object is determined, where the size information includes a thickness and a width of the target object.

8. The method according to claim 1 or 2, wherein: The medical imaging device includes a rotating motion component on which an X-ray generator is installed, the first current position or the second current position of the target object relative to the medical imaging device is the first current position or the second current position of the target object relative to the rotating motion component, The method further comprises: Determine the current angular position of the rotational motion component by an angle sensor or a gyroscope integrated in the rotational motion component to obtain a first current position or a second current position of the target object relative to the rotational motion component; or The first current position or the second current position of the target object relative to the rotational motion component is determined through the picture taken by the three-dimensional camera.

9. An organ program determination device for a medical imaging device, comprising: A first acquisition module is used to acquire a target part to be measured of a target object and an initial position of the target object relative to a medical imaging device; A second acquisition module, used to acquire size information of the target object; as well as An organ program determination module is used to determine the organ program of the medical imaging device in response to a change in a first current position of the target object relative to the initial position of the medical imaging device, based on the size information of the target object and the first current position, wherein the organ program is used to define the operating parameters of the medical imaging device.

10. A medical imaging device, the medical imaging device being connected to at least one processor and at least one memory, wherein a computer program is stored in the at least one memory. in, When the computer program is executed by the at least one processor, the at least one processor is caused to perform the method according to any one of claims 1 to 9.

11. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the processor is caused to execute the method according to any one of claims 1 to 8.

12. A computer program product, comprising a computer program, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 8.

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