A scanning positioning method and device

Abstract

The application discloses a scanning positioning method and device, and the method comprises the steps of obtaining position information of a key part of a target object based on a pressure sensor; establishing a position coordinate model of the target object based on the position information; and performing scanning positioning on a part to be scanned of the target object based on the position coordinate model and the part to be scanned. After the target object lies on a scanning bed, the position information of the key part of the target object is obtained through a pressure sensor, and the position coordinate model corresponding to the target object can be accurately constructed based on the position information, so that the position information of the part to be scanned can be accurately determined according to the position coordinate model, the accuracy of scanning positioning is improved, and the problem of inaccurate scanning positioning is solved.

Description

Technical Field

[0001] This invention relates to the field of medical imaging technology, and in particular to a scanning positioning method and apparatus. Background Technology

[0002] With the continuous development of magnetic resonance imaging (MRI) technology, the level of functional integration is also constantly improving, and MRI equipment is being used more and more widely in clinical practice.

[0003] Magnetic resonance imaging (MRI) equipment mainly includes a magnet, gradient, radio frequency (RF) transmitting coil, RF receiving coil, and a scanning bed that carries the object being examined. The MRI scanning bed is used to move the object to be examined into the main magnet and gradient field generated by the magnet and gradient coil. The RF transmitting coil excites the object to generate a magnetic resonance signal, and the RF receiving coil receives the magnetic resonance signal of the object. The computer then reconstructs this signal into a magnetic resonance image.

[0004] Currently, MRI equipment uses a simple, fixed positioning method. This requires roughly picking up a reference point during the movement of the scanning bed to identify the position of patients of different heights, thus achieving the positioning of the scanning bed. This ensures subsequent control of the scanning bed movement and aligns the scanning area of ​​patients of different heights with the target area of ​​the scanning equipment.

[0005] However, since the current positioning method is a simple fixed positioning, there is a problem of inaccurate positioning. Summary of the Invention

[0006] In view of this, the present invention provides a scanning positioning method and apparatus, the main purpose of which is to solve the problem of inaccurate scanning positioning currently existing.

[0007] To address the above problems, this application provides a scanning and positioning method, comprising:

[0008] Based on pressure sensors, obtain the location information of key parts of the target object;

[0009] Establish a position coordinate model of the target object based on the location information;

[0010] Based on the position coordinate model and the part of the target object to be scanned, the scanning location of the part to be scanned is performed.

[0011] Optionally, acquiring the location information of key parts of the target object based on the pressure sensor includes:

[0012] Multiple pressure detection devices are arranged along the circumference of the key part, and the position information of the multiple pressure detection devices on the scanning bed is obtained. Each pressure detection device includes at least two along the direction perpendicular to the arrangement of the multiple pressure detection devices.

[0013] Based on multiple pressure detection devices, the pressure distribution information of the key parts is detected;

[0014] Based on the position information of the multiple pressure detection devices on the scanning bed and the pressure distribution information, the position information of the key parts is obtained.

[0015] Optionally, based on the position information of the multiple pressure detection devices on the scanning bed and the pressure distribution information, the position information of the key parts is obtained, including:

[0016] Based on the pressure distribution information, the center point of the key component is obtained;

[0017] Based on the position information of the multiple pressure detection devices on the scanning bed, the position information of the center point on the scanning bed is obtained.

[0018] Optionally, acquiring the position information of multiple pressure detection devices on the scanning bed includes:

[0019] The distance sensor acquires position information of multiple pressure detection devices relative to preset positions on the scanning bed;

[0020] Alternatively, a visual recognition device can be used to obtain position information of multiple pressure detection devices relative to preset positions on the scanning bed.

[0021] Optionally, establishing a position coordinate model of the target object based on the position information includes:

[0022] Obtain the aperture information of the scanning cavity;

[0023] Based on the location information of the key parts and the aperture information, a position coordinate model of the target object is established.

[0024] Optionally, the key components include multiple components, and each key component corresponds to the multiple sets of pressure detection devices;

[0025] The multiple pressure detection devices are worn on the corresponding key parts; or, the multiple pressure detection devices are flexible detection devices, which are set on the scanning bed.

[0026] Optionally, the flexible detection device is slidably connected to the scanning bed.

[0027] Optionally, the key parts include at least two of the following: the head, feet, the thoracic cavity corresponding to the sternum, and the knees.

[0028] Optionally, the scanning and positioning method further includes:

[0029] Based on pressure sensors, real-time position information of key parts of the target object is obtained;

[0030] The location target model is updated based on the real-time location information.

[0031] To address the above problems, this application provides a scanning and positioning device, comprising:

[0032] The acquisition module is used to acquire the position information of key parts of the target object based on the pressure sensor;

[0033] A module is established to create a position coordinate model of the target object based on the location information.

[0034] The positioning module is used to perform scanning and positioning of the part to be scanned based on the position coordinate model and the part to be scanned of the target object.

[0035] The scanning positioning method and apparatus disclosed in this application, when the target object is laid on the scanning bed, obtains the position information of key parts of the target object through pressure sensor detection, and can accurately construct a position coordinate model corresponding to the target object based on the position information, thereby accurately determining the position information of the part to be scanned according to the position coordinate model, improving the accuracy of scanning positioning and solving the problem of inaccurate scanning positioning at present.

[0036] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0037] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0038] Figure 1 This is a flowchart of a scanning and positioning method according to an embodiment of this application;

[0039] Figure 2 A schematic diagram showing the target subject lying face up on the scanning bed;

[0040] Figure 3 This is a schematic diagram of the location space of the cylindrical network in another embodiment;

[0041] Figure 4 This is a schematic diagram of the structure of a scanning and positioning device in another embodiment;

[0042] Figure 5 This is a schematic diagram of the structure of an electronic device in another embodiment. Detailed Implementation

[0043] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0044] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0045] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0046] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0047] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0048] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0049] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0050] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0051] This application provides a scanning and positioning method that can be used in at least one of magnetic resonance imaging (MRI), computed tomography (CT), and positron emission tomography-computed tomography (PET-CT), such as... Figure 1 As shown, the method in this embodiment includes the following steps:

[0052] Step S101: Based on the pressure sensor, obtain the position information of the key parts of the target object;

[0053] In this step, the pressure sensor can be worn on the target object or placed on the scanning bed. For example, the position information of the key parts can be obtained by using pressure sensors worn on the target object at key locations; or by sliding pressure sensors on the scanning bed, the pressure information of each key part can be detected by sliding the pressure sensors to the positions corresponding to the key parts of the target object when the target object is lying on the scanning bed, thereby obtaining the position information of the key parts. In this step, the key parts can specifically include at least two key parts among the head, feet, chest cavity corresponding to the sternum, and knees. Each key part corresponds to a pressure sensor with multiple sets of pressure detection devices; the multiple sets of pressure detection devices (i.e., pressure sensors) are worn on the corresponding key part; or, the multiple sets of pressure detection devices are flexible detection devices, which are placed on the scanning bed. The flexible detection device includes at least a pressure detection part that contacts the key part and changes shape with the key part under pressure, thereby ensuring a close fit to the key part.

[0054] Step S102: Establish a position coordinate model of the target object based on the position information;

[0055] In the specific implementation process of this step, the aperture information of the scanning cavity can be obtained; then, based on the position information of the key parts and the aperture information, the position coordinate model of the target object is established, that is, the three-dimensional position coordinate model of the human body in a cylindrical shape is obtained.

[0056] Step S103: Based on the position coordinate model and the part of the target object to be scanned, perform scanning and positioning of the part to be scanned.

[0057] In this step, after obtaining the position coordinate model, the position of the part of the target object to be scanned in the position coordinate model can be determined. For example, the position coordinates of the abdominal region to be scanned can be determined, and then the target distance of the scanned region relative to the detector can be determined based on the position coordinates of the scanned region.

[0058] The scanning and positioning method disclosed in this application obtains the position information of key parts of the target object by detecting pressure sensors after the target object is laid on the scanning bed. Based on the position information, a position coordinate model corresponding to the target object can be accurately constructed. Thus, the position information of the part to be scanned can be accurately determined according to the position coordinate model, which improves the accuracy of scanning and positioning, achieves precise scanning and positioning, and solves the problem of inaccurate scanning and positioning at present.

[0059] This application provides a scanning and positioning method, which specifically includes the following steps:

[0060] Step S201: Multiple pressure detection devices are set up along the circumferential direction of the key part, and the position information of the multiple pressure detection devices on the scanning bed is obtained. Each pressure detection device includes at least two along the direction perpendicular to the arrangement of the multiple pressure detection devices.

[0061] In this step, taking the foot as a key area as an example, a set of pressure detection devices can be set at four positions along the circumference of the foot: top, bottom, left, and right. That is, four sets of pressure detection devices are set along the circumference of the foot, forming a pressure sensor corresponding to the foot. Each set of pressure detection devices consists of two sub-pressure detection units arranged perpendicular to the direction of the multiple sets of pressure detection devices. One of the two sub-pressure detection units is a main unit, and the other is a sub-unit. The pressure information measured by the main unit can be denoised based on the pressure information detected by the sub-unit to obtain accurate position information. Specifically, the pressure information measured by the main unit includes the pressure value of the key area and clutter information, while the sub-unit mainly measures clutter information. By subtracting the pressure information measured by the sub-unit from the pressure information measured by the main unit, the effective pressure information after removing clutter can be obtained. The position information obtained based on the effective pressure information is more accurate. In other embodiments, the position information measured by the main unit can also be verified based on the pressure information of the sub-unit. Taking the head measurement as an example, the main unit is closer to the top of the head than the sub-unit. When the pressure information (pressure value) detected by the sub-unit increases, it indicates that the head position has moved towards the sub-unit. Therefore, the position information measured by the main unit can be adjusted based on the change in pressure information.

[0062] In this step, the pressure sensor can be wearable, such as a pressure sensor worn on key areas like the head or feet of the target object, laying the foundation for subsequent detection of pressure distribution information at these key areas. Specifically, the head pressure sensor can be a flexible helmet or flexible headgear, etc., with pressure detection devices installed around the inner wall of the flexible helmet, for example, at four positions along the head circumference: front, back, left, and right. Thus, when the wearer puts on the helmet, it fits snugly against the head surface, allowing the four pressure sensors to detect sub-pressure information and obtain pressure distribution information corresponding to the head when the wearer lies on the scanning bed.

[0063] Similarly, corresponding foot sensors can be worn on the feet. For example, a flexible foot cover could be worn, with four pressure detection devices installed on the inner wall of the foot cover, such as at the medial malleolus, lateral malleolus, instep, and heel. When the wearer puts on the foot cover, it conforms to the surface of the foot, and when the wearer lies on the scanning bed, the four pressure detection devices can detect and obtain sub-pressure information, thus obtaining pressure distribution information. Similarly, pressure sensors can be worn on other key areas such as the knees and the chest corresponding to the sternum to detect pressure distribution information corresponding to each key area. Specifically, a head pressure sensor / helmet can also be slidably positioned relative to the length of the scanning bed. This allows the helmet and foot cover to be slid along the length of the scanning bed according to the wearer's height or body proportions, thus completing the wearing process.

[0064] In this embodiment, the multiple pressure detection devices can also be flexible detection devices mounted on the scanning bed. To enable the flexible detection devices to detect pressure distribution information at key locations for target objects of different heights, the flexible detection devices can be slidably mounted on the scanning bed, thereby adjusting the distance between adjacent flexible detection devices according to the target object's height.

[0065] Step S202: Based on multiple sets of pressure detection devices, detect the pressure distribution information of the key parts;

[0066] In this step, after the target object lies on the scanning bed, pressure distribution information of the corresponding key areas can be obtained by using multiple pressure detection devices such as helmets and foot covers worn on the key areas. Alternatively, pressure distribution information of each key area can be obtained by using flexible detection devices corresponding to the key areas.

[0067] Step S203: Based on the position information of the multiple pressure detection devices on the scanning bed and the pressure distribution information, obtain the position information of the key parts;

[0068] In this step, the center point of the key component can be obtained based on pressure distribution information. Then, position information of multiple pressure detection devices relative to preset positions on the scanning bed is acquired using a distance sensor. In one example, the distance sensor can be integrated with the pressure sensor; alternatively, position information of multiple pressure detection devices relative to preset positions on the scanning bed can be acquired using a visual recognition device. Finally, based on the position information of the multiple pressure detection devices on the scanning bed, the position information of the center point on the scanning bed is obtained.

[0069] For example, taking the head as a key part, the system uses pressure sensors corresponding to the head—specifically, four sets of pressure detection devices—to obtain first pressure distribution information corresponding to each head pressure detection device. Then, based on this first pressure distribution information, the first center point of the head is determined. Finally, based on the first horizontal distance between each head pressure detection device (the pressure sensor corresponding to the head) and a preset position on the scanning bed, the first position coordinates of the first center point relative to the preset position are determined. In a specific implementation, the first center point can be determined based on the first pressure distribution information and the relative positions of each head pressure detection device. Then, based on the position coordinates of the first center point relative to the head pressure sensor and the first horizontal distance between the head pressure sensor and the preset position on the scanning bed, the first position coordinates of the first center point relative to the preset position are obtained. Similarly, when there are multiple key parts, the above method can also be used to obtain the position coordinates of other key parts, such as the position coordinates of the feet, knees, and / or the position coordinates of the thoracic cavity corresponding to the sternum, etc.

[0070] Step S204: Obtain the aperture information of the scanning cavity; based on the position information of the key parts and the aperture information, establish the position coordinate model of the target object.

[0071] In this step, after obtaining the location information of key parts, such as the head, the chest cavity corresponding to the sternum, the waist, the knees, and the feet, the location coordinate model of the target object can be further established by combining the aperture information of the scanning cavity. This lays the foundation for subsequent accurate scanning and positioning based on the location coordinate model.

[0072] Step S205: Based on the position coordinate model and the part of the target object to be scanned, perform scanning and positioning of the part to be scanned.

[0073] In this embodiment, during implementation, real-time location information of key parts of the target object can be obtained; based on the real-time location information, the location target model is updated. By updating the location coordinate model in real time, accurate scanning and positioning can be ensured.

[0074] The scanning and positioning method in this embodiment uses multiple pressure detection devices to detect and obtain the position information of key parts such as the head, feet, and knees. This allows for the accurate establishment of a position coordinate model corresponding to the target object. Based on this position coordinate model, the position information of the part to be scanned can be accurately determined, improving the accuracy of scanning and positioning, achieving precise scanning and positioning, and solving the problem of inaccurate scanning and positioning in the present invention.

[0075] Another embodiment of this application provides a scanning and positioning method, including:

[0076] Step S301: Based on the detection device worn on the head, the detection device worn on the chest corresponding to the sternum, the detection device worn on the knee, and the detection device worn on the foot of the target object, the first pressure distribution information, the second pressure distribution information, the third pressure distribution information, and the fourth pressure distribution information are obtained through distribution detection.

[0077] In the specific implementation of this step, the head-corresponding detection device can be, for example, a flexible headgear, a flexible helmet, or a flexible foot strap, etc. Taking a helmet as an example, pressure detection devices are set on the inner wall of the helmet at four positions along the head circumference: front, back, left, and right. Thus, when the target object wears the helmet, the helmet will fit snugly against the head surface, and when the target object lies on the scanning bed, the four pressure detection devices can respectively detect and obtain four first sub-pressure information, thereby obtaining the first pressure distribution information.

[0078] Similarly, the foot-wearing device can also be a flexible foot sleeve, foot band, etc. Four pressure detection devices are set on the inner wall of the flexible foot sleeve, for example, pressure detection devices are set at four positions: the inner ankle, outer ankle, instep, and heel. Thus, when the target object wears the foot sleeve, the foot sleeve will fit against the surface of the foot. When the target object lies on the scanning bed, the four pressure detection devices can detect and obtain four second sub-pressure information, thereby obtaining second pressure distribution information.

[0079] Similarly, a flexible, cylindrical sleeve can be worn on the chest, with multiple pressure detection devices arranged on the inner wall of the sleeve along a direction parallel to the cross-section of the human body. For example, four pressure detection devices can be arranged, corresponding to the positions of the chest, the back, and the ribs on both sides of the body. Thus, when the target wears the flexible sleeve, it will fit snugly against the surface of the chest. By arranging detection devices in these four directions, when the target wears the flexible sleeve and lies face up, face down, to the left, or to the right, these four pressure detection devices will detect different third sub-pressure information, thereby obtaining third pressure distribution information.

[0080] In this step, a flexible, cylindrical knee brace can be worn on the knee area. Multiple pressure detection devices are installed on the inner wall of the knee brace along a direction parallel to the cross-section of the human body. For example, four pressure detection devices can be installed, corresponding to the front, back, left, and right positions of the leg. Thus, when the target wears the knee brace, it will fit snugly against the knee surface. By placing pressure detection devices in these four directions, when the target wears the flexible knee brace and lies face up, face down, to the left, or to the right, these four pressure detection devices will detect different fourth sub-pressure information, thereby obtaining fourth pressure distribution information. Figure 2 The image shown is a schematic diagram of the target object lying face up on the scanning bed.

[0081] Step S302: Based on the first pressure distribution information and the first horizontal distance between the head detection device and the preset position of the scanning bed, determine the first center point corresponding to the head and the first position coordinates of the first center point relative to the preset position.

[0082] In the specific implementation of this step, the first center point can be determined based on the first sub-pressure information in the first pressure distribution information and the relative positions of each head detection device; then, the position information of the head detection device relative to the preset position on the scanning bed can be obtained based on the distance sensor; or, the position information of the head detection device relative to the preset position on the scanning bed can be obtained through a visual recognition device, and finally, the position information of the first center point relative to the preset position on the scanning bed can be determined based on the position information, that is, the first position coordinates of the first center point relative to the preset position on the scanning bed can be obtained.

[0083] Step S303: Based on the second pressure information and the second horizontal distance of the foot detection device relative to the preset position of the scanning bed, determine the second center point corresponding to the foot and the second position coordinates of the second center point relative to the preset position;

[0084] In the specific implementation process of this step, the second center point can be determined based on the second sub-pressure information in the second pressure distribution information and the relative positions of each foot detection device; then, the position information of the foot detection device relative to the preset position on the scanning bed can be obtained based on the distance sensor; or, the position information of the foot detection device relative to the preset position on the scanning bed can be obtained through a visual recognition device. Finally, the position information of the second center point relative to the preset position on the scanning bed can be determined based on this position information, that is, the second position coordinates of the second center point relative to the preset position on the scanning bed can be obtained.

[0085] Step S304: Based on the third pressure information and the third horizontal distance of the chest detection device relative to the preset position of the scanning bed, determine the third center point corresponding to the chest and the third position coordinates of the third center point relative to the preset position.

[0086] In the specific implementation of this step, the third center point can be determined based on the third sub-pressure information in the third pressure distribution information and the relative positions of each chest detection device; then, the position information of the chest pressure detection device relative to the preset position on the scanning bed can be obtained based on the distance sensor; or, the position information of the chest detection device relative to the preset position on the scanning bed can be obtained through a visual recognition device. Finally, the position information of the third center point relative to the preset position on the scanning bed can be determined based on this position information, that is, the third position coordinates of the third center point relative to the preset position on the scanning bed can be obtained.

[0087] Step S305: Based on the fourth pressure information and the fourth horizontal distance of the knee detection device relative to the preset position of the scanning bed, determine the fourth center point corresponding to the knee and the fourth position coordinates of the fourth center point relative to the preset position;

[0088] In the specific implementation of this step, the fourth center point can be determined based on the fourth sub-pressure information in the fourth pressure distribution information and the relative positions of each knee detection device; then, the position information of the knee detection device relative to the preset position on the scanning bed can be obtained based on the distance sensor; or, the position information of the knee detection device relative to the preset position on the scanning bed can be obtained through a visual recognition device. Finally, the position information of the fourth center point relative to the preset position on the scanning bed can be determined based on this position information, that is, the fourth position coordinates of the fourth center point relative to the preset position on the scanning bed can be obtained.

[0089] Step S306: Based on the third center point, the fourth center point, the first center point, and the second center point, determine the target center point corresponding to the target object; based on the third position coordinates, the fourth position coordinates, the first position coordinates, and the second position coordinates, obtain the center point position coordinates of the target center point relative to the preset position.

[0090] Step S307: Based on the first center point, the first position coordinates, the second center point, the second position coordinates, the third center point, the third position coordinates, the fourth center point, the fourth position coordinates, the target center point, and the center point position coordinates, establish the position coordinate model of the target object;

[0091] In this step, after determining the target center point, the human body centerline can be determined based on the center point, and then a three-dimensional coordinate model of the human body can be constructed based on the human body centerline.

[0092] In other words, once the positions of the corresponding center points for the head, chest, knees, and feet are determined, the actual positions of these four center points can be effectively calculated. Using the center points of these four regions and the aperture information of the scanning cavity, a cylindrical mesh-like positional space centered on the human body can be formed, specifically as follows: Figure 3 As shown, the two-dimensional planar coordinates (x, y) of each part of the body can be effectively identified through this open mesh space. With the help of machine vision recognition methods / systems, the three-dimensional planar coordinates (x, y, z) of each part can then be obtained. In this way, a human body position parameter coordinate model / human body three-dimensional coordinate model can be constructed.

[0093] Step S308: Based on the position coordinate model and the part of the target object to be scanned, perform scanning and positioning of the part to be scanned.

[0094] In this step, after constructing and obtaining the position coordinate model, the horizontal distance of the area to be scanned relative to the target center point can be determined based on the human body three-dimensional coordinate model / position coordinate model. Finally, based on the horizontal distance of the area to be scanned relative to the target center point, the horizontal distance of the target center point relative to the preset position, and the standard horizontal distance of the preset position relative to the detector, the target distance of the area to be scanned relative to the detector can be determined, thereby achieving accurate scanning and positioning.

[0095] In this embodiment, four pressure sensing devices can be installed at the upper and lower support points of the scanning bed to form a pressure detection loop. That is, a weighing sensing device is set on the scanning bed, containing a strain gauge. The degree of deformation of the strain gauge transmits pressure information to the weighing sensor chip, which then wirelessly transmits it to the terminal receiving device, thereby enabling accurate and real-time measurement of the target object's weight.

[0096] The scanning and positioning method in this embodiment uses four sets of wafer sensors installed at the head, chest, knees, and feet of the scanning bed. With the help of a wireless network and a weak signal voltage detection circuit, the transmitted signals are collected by the computer system to obtain positioning points for each area. Then, the range and distance of each area are calculated, which can quickly measure the patient's height and the actual information of each part in real time. In addition, it can obtain the dynamic positioning information of the human body in real time through the structure of the human body. Even when entering or leaving the bed, one-click uninterrupted scanning movement can be achieved.

[0097] By employing the method described in this application, during the scanning bed insertion procedure, the doctor directly places the patient into the magnet cavity. The computer system dynamically acquires the positioning information (x, y, z) of a specific location on the patient's body. This three-dimensional coordinate positioning point allows for real-time reference positioning of different parts of the body, enabling efficient and rapid subsequent multi-segment scanning operations during relative positioning scanning. This method solves the problems of inaccurate positioning caused by traditional simple fixed positioning methods, such as laser lamp positioning, and the inconvenience caused by the special requirements and limitations of laser usage.

[0098] Furthermore, the method in this application, through dynamic positioning, not only solves the aforementioned problems but also effectively avoids the need to constantly stop and adjust the patient's location information during the scanning process to meet the scanning needs of different body parts, as well as the problem of excessive patient dwell time in the magnet space. This effectively reduces scanning time and improves scanning efficiency.

[0099] Another embodiment of this application provides a scanning and positioning device, such as... Figure 4 As shown, the scanning and positioning device 1 in this embodiment includes:

[0100] The acquisition module 11 is used to acquire the position information of key parts of the target object based on the pressure sensor;

[0101] Module 12 is used to establish a position coordinate model of the target object based on the position information;

[0102] The positioning module 13 is used to perform scanning positioning of the part to be scanned based on the position coordinate model and the part to be scanned of the target object.

[0103] In this embodiment, the acquisition module is specifically used to: arrange multiple sets of pressure detection devices along the circumferential direction of the key part, and acquire the position information of the multiple sets of pressure detection devices on the scanning bed, each set of pressure detection devices including at least two along the direction perpendicular to the arrangement of the multiple sets of pressure detection devices; detect the pressure distribution information of the key part based on the multiple sets of pressure detection devices; and acquire the position information of the key part based on the position information of the multiple sets of pressure detection devices on the scanning bed and the pressure distribution information.

[0104] In this embodiment, the acquisition unit is specifically used to: acquire the center point of the key part based on the pressure distribution information; and acquire the position information of the center point on the scanning bed based on the position information of the multiple pressure detection devices on the scanning bed.

[0105] In this embodiment, the acquisition unit is specifically used to: acquire position information of multiple pressure detection devices relative to preset positions on the scanning bed through a distance sensor; or, acquire position information of multiple pressure detection devices relative to preset positions on the scanning bed through a visual recognition device.

[0106] In this embodiment, the establishment module is specifically used to: acquire the aperture information of the scanning cavity; and establish a position coordinate model of the target object based on the position information of the key parts and the aperture information.

[0107] In this embodiment, the key parts include multiple components, each key part corresponding to multiple sets of pressure detection devices; the multiple sets of pressure detection devices are worn on the corresponding key parts; or, the multiple sets of pressure detection devices are flexible detection devices, which are disposed on the scanning bed.

[0108] In this embodiment, the flexible detection device is slidably connected to the scanning bed.

[0109] In this embodiment, the key parts include at least two parts: the head, feet, the thoracic cavity corresponding to the sternum, and the knees.

[0110] In this embodiment, the scanning and positioning device further includes an update module, which is used to: acquire real-time location information of key parts of the target object based on a pressure sensor; and update the location target model based on the real-time location information.

[0111] This embodiment describes a scanning and positioning device. When the target object lies on the scanning bed, the device detects and obtains the position information of key parts of the target object through pressure sensors. Based on the position information, it can accurately construct a position coordinate model corresponding to the target object. Thus, it can accurately determine the position information of the part to be scanned based on the position coordinate model, thereby improving the accuracy of scanning and positioning and solving the current problem of inaccurate scanning and positioning.

[0112] Another embodiment of this application provides an electronic device, such as... Figure 5 As shown, it includes at least a memory 1 and a processor 2. The memory 1 stores a computer program, and the processor 2 performs the following method steps when executing the computer program in the memory 1:

[0113] Step 1: Based on pressure sensors, obtain the location information of key parts of the target object;

[0114] Step 2: Establish a position coordinate model of the target object based on the location information;

[0115] Step 3: Based on the position coordinate model and the area to be scanned of the target object, perform scanning and positioning of the area to be scanned.

[0116] The specific implementation process of the above method steps can be found in the embodiments of the above arbitrary scanning and positioning method, which will not be repeated here.

[0117] In this embodiment, the electronic device, after the target object is laid on the scanning bed, obtains the position information of the key parts of the target object through pressure sensors. Based on the position information, it can accurately construct a position coordinate model corresponding to the target object, thereby accurately determining the position information of the part to be scanned according to the position coordinate model, improving the accuracy of scanning positioning and solving the current problem of inaccurate scanning positioning.

[0118] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A scanning and positioning method, characterized in that, include Based on pressure sensors worn on key parts of the target object, or based on pressure sensors that slide on the scanning bed, the position information of key parts of the target object is obtained; Obtain the aperture information of the scanning cavity; Based on the location information of the key parts and the aperture information, a three-dimensional position coordinate model of the target object is established. Based on the position coordinate model and the part of the target object to be scanned, the scanning location of the part to be scanned is performed.

2. The method according to claim 1, characterized in that, The method of acquiring position information of key parts of the target object based on pressure sensors worn on key parts of the target object, or based on pressure sensors slidably mounted on the scanning bed, includes: Multiple pressure detection devices are arranged along the circumference of the key part, and the position information of the multiple pressure detection devices on the scanning bed is obtained. Each pressure detection device includes at least two along the direction perpendicular to the arrangement of the multiple pressure detection devices. Based on multiple pressure detection devices, the pressure distribution information of the key parts is detected; Based on the position information of the multiple pressure detection devices on the scanning bed and the pressure distribution information, the position information of the key parts is obtained.

3. The method according to claim 2, characterized in that, Based on the position information of the multiple pressure detection devices on the scanning bed and the pressure distribution information, the position information of the key parts is obtained, including: Based on the pressure distribution information, the center point of the key component is obtained; Based on the position information of the multiple pressure detection devices on the scanning bed, the position information of the center point on the scanning bed is obtained.

4. The method according to claim 2, characterized in that, The acquisition of the position information of multiple pressure detection devices on the scanning bed includes: The distance sensor acquires position information of multiple pressure detection devices relative to preset positions on the scanning bed; Alternatively, a visual recognition device can be used to obtain position information of multiple pressure detection devices relative to preset positions on the scanning bed.

5. The method according to claim 2, characterized in that, The key components include multiple components, and each key component corresponds to the multiple sets of pressure detection devices; The multiple pressure detection devices are worn on the corresponding key parts; or, the multiple pressure detection devices are flexible detection devices, which are set on the scanning bed.

6. The method according to claim 5, characterized in that, The flexible detection device is slidably connected to the scanning bed.

7. The method according to any one of claims 1-6, characterized in that, The key areas include at least two of the following: the head, feet, the thoracic cavity corresponding to the sternum, and the knees.

8. The method according to any one of claims 1-6, characterized in that, The method further includes: Based on pressure sensors, real-time position information of key parts of the target object is obtained; The location target model is updated based on the real-time location information.

9. A scanning and positioning device, characterized in that, include: The acquisition module is used to acquire the position information of the key parts of the target object based on the pressure sensor worn on the key parts of the target object, or based on the pressure sensor that is slidably set on the scanning bed; A module is established to obtain the aperture information of the scanning cavity; Based on the location information of the key parts and the aperture information, a three-dimensional position coordinate model of the target object is established. The positioning module is used to perform scanning and positioning of the part to be scanned based on the position coordinate model and the part to be scanned of the target object.

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