CT scanning method, apparatus, equipment and medium

Abstract

The CT scanning method, device, equipment and medium provided by the embodiments of the present disclosure include: outputting control instructions to the position sensor, obtaining the first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and the second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range; determining the first correlation relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the second correlation relationship between the position information of the ending position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support; determining the starting exposure time and the ending exposure time of the X-ray light source according to the first correlation relationship and the second correlation relationship. The scanning of the patient's scanning range can be achieved without scanning the patient with a positioning image, thereby improving the scanning efficiency and reducing the secondary radiation to the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of CT scanning and related technical fields, and in particular to a method, device, equipment and medium suitable for CT scanning. Background Art

[0002] CT (Computed Tomography) is a medical imaging technology. It uses X-ray beams to scan the human body and uses computer processing to produce detailed images of the body's internal structures. CT scanning is widely used in the diagnosis of various diseases due to its fast and clear imaging capabilities.

[0003] In the prior art, in the current routine CT clinical scanning process, the doctors who perform CT scanning operations before the main scanning sequence need to prepare for the following operations: 1) registration at the main console; 2) patient loading and positioning in the scanning room; 3) scanning positioning images at the main console; 4) planning the scanning range on the positioning image. These preparations before the main scan require multiple operations inside and outside the scanning room, among which the positioning image scanning also requires additional bed movement, which causes radiation damage to the patient. The process is cumbersome and does not bring convenience and benefits to both the scanner and the scanned person. Summary of the invention

[0004] The embodiments described herein provide a CT scanning method, apparatus, device, and medium to solve the problems existing in the prior art.

[0005] In a first aspect, according to the present disclosure, a CT scanning method is provided, which is applied to a CT scanning system, wherein the CT scanning system comprises a scanning bed, a scanning bed support, a scanning gantry, an X-ray light source and a position sensor, wherein the position sensor is arranged on the scanning bed and moves along a movement direction of the scanning bed, and the X-ray light source is fixed on the scanning gantry, comprising:

[0006] Outputting a control instruction to the position sensor to control the movement of the position sensor, and obtaining first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range;

[0007] Acquiring third position information of the scanning bed support relative to the scanning frame;

[0008] Determine, according to the first position information, the second position information and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support;

[0009] The starting exposure time and the ending exposure time of the X-ray light source are determined according to a first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support and a second association relationship between position information of the ending position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support.

[0010] In some embodiments of the present disclosure, the outputting of the control instruction to the position sensor to control the movement of the position sensor and obtaining the first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range and the second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range includes:

[0011] Outputting a first control instruction to the position sensor to control the movement of the position sensor;

[0012] When the position sensor moves to the starting position of the scanning range, output a second control instruction to the position sensor to control the position sensor to stop moving, and receive first position information of the position sensor relative to the scanning bed collected by the position sensor;

[0013] outputting the first control instruction to the position sensor again to control the movement of the position sensor;

[0014] When the position sensor moves to the end position of the scanning range, a second control instruction is output to the position sensor to control the position sensor to stop moving, and second position information of the position sensor relative to the scanning bed collected by the position sensor is received.

[0015] In some embodiments of the present disclosure, determining, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, comprises:

[0016] Determine, based on the first position information and the third position information, a first association relationship between the position information of the scanning range start position relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support;

[0017] A second association relationship between the position information of the scanning range end position relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support is determined according to the second position information and the third position information.

[0018] In some embodiments of the present disclosure, a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support satisfies:

[0019] ,

[0020] in, is the first position information of the starting position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the starting position of the scanning range relative to the scanning frame.

[0021] In some embodiments of the present disclosure, a second association relationship between the position information of the scanning range termination position relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support satisfies:

[0022] ,

[0023] in, is second position information of the end position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the end position of the scanning range relative to the scanning frame.

[0024] In some embodiments of the present disclosure, determining the start exposure time and the end exposure time of the X-ray light source according to a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support includes:

[0025] Acquiring position information of the scanning bed relative to the scanning bed support in a moving state;

[0026] Determining the position information of the starting position of the scanning range relative to the scanning gantry according to a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support;

[0027] Determine the position information of the end position of the scanning range relative to the scanning gantry according to a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support;

[0028] Determining a starting exposure time of the X-ray light source according to position information of a starting position of the scanning range relative to the scanning gantry;

[0029] The termination exposure time of the X-ray light source is determined according to the position information of the termination position of the scanning range relative to the scanning frame.

[0030] In some embodiments of the present disclosure, determining the starting exposure time of the X-ray light source according to the position information of the starting position of the scanning range relative to the scanning gantry includes:

[0031] When the position information of the starting position of the scanning range relative to the scanning gantry is zero, determining the starting exposure time of the X-ray light source;

[0032] The step of determining the termination exposure time of the X-ray light source according to the position information of the termination position of the scanning range relative to the scanning frame comprises:

[0033] When the position information of the end position of the scanning range relative to the scanning gantry is zero, the end exposure time of the X-ray light source is determined.

[0034] In a second aspect, according to the present disclosure, a CT scanning device is provided, which is applied to a CT scanning system. The CT scanning system includes a scanning bed, a scanning bed support, a scanning gantry, an X-ray light source and a position sensor. The position sensor is arranged on the scanning bed and moves along the movement direction of the scanning bed. The X-ray light source is fixed on the scanning gantry, including:

[0035] a control instruction output module, used to output a control instruction to the position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range;

[0036] A third position information acquisition module, used to acquire third position information of the scanning bed support relative to the scanning frame;

[0037] an association relationship determination module, configured to determine, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support;

[0038] an exposure time determination module, for determining a start exposure time and an end exposure time of the X-ray light source according to a first association relationship between position information of a start position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support, and a second association relationship between position information of a termination position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support.

[0039] In a third aspect, according to the present disclosure, there is provided a computer device, including:

[0040] one or more processors;

[0041] a storage device for storing one or more programs,

[0042] When the one or more programs are executed by the one or more processors, the one or more processors implement any method as described in the first aspect.

[0043] In a fourth aspect, according to the content of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, it implements any method as described in the first aspect.

[0044] The CT scanning method, apparatus, device and medium provided by the embodiments of the present disclosure first output a control instruction to a position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to a scanning bed when the position sensor moves to a starting position of a scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to a termination position of the scanning range; then obtain third position information of a scanning bed support relative to a scanning gantry; and determine a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the termination position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support based on the first position information, the second position information and the third position information; finally, determine a start exposure time and an end exposure time of an X-ray light source based on the first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and the second association relationship between the position information of the termination position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support. By arranging a position sensor on the scanning bed, the position sensor can move along the movement direction of the scanning bed. The position sensor moves to the starting position of the scanning range and the ending position of the scanning range in response to the control instruction and collects first position information of the starting position of the scanning range relative to the scanning bed and second position information of the ending position of the scanning range relative to the scanning bed. Then, through the first position information, the second position information and the third position information of the scanning bed support relative to the scanning frame, a first association relationship between the position information of the starting position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the ending position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support are established. Finally, by collecting the position information of the scanning bed relative to the scanning bed support in the moving state, the position information of the starting position of the scanning range relative to the scanning frame and the position information of the ending position of the scanning range relative to the scanning frame are determined, and then the exposure time of the X-ray is determined. The scanning of the patient's scanning range can be realized without scanning the patient with a positioning image, thereby improving the scanning efficiency and reducing the secondary radiation to the patient.

[0045] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. It should be noted that the drawings described below only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure, wherein:

[0047] Figure 1 is a flow chart of a CT scanning method provided by an embodiment of the present disclosure;

[0048] Figure 2 is a partial structural schematic diagram of a CT scanning system provided by an embodiment of the present disclosure;

[0049] Figure 3 is a structural schematic diagram of a CT scanning device provided by an embodiment of the present disclosure;

[0050] Figure 4 It is a structural diagram of a computer device provided in an embodiment of the present disclosure.

[0051] In the drawings, reference numerals with the same last two digits correspond to the same elements. It should be noted that the elements in the drawings are schematic and not drawn to scale. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work also fall within the scope of protection of the present disclosure.

[0053] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person skilled in the art to which the subject matter of the present disclosure belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the specification and the relevant art, and will not be interpreted in an idealized or overly formal form unless otherwise explicitly defined herein. As used herein, a statement that two or more parts are "connected" or "coupled" together shall mean that the parts are joined together directly or through one or more intermediate components.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] Furthermore, in all embodiments of the present disclosure, terms such as “first” and “second” are used only to distinguish one component (or a part of a component) from another component (or another part of a component).

[0057] In the description of the present application, unless otherwise specified, “plurality” means more than two (including two), and similarly, “plurality groups” means more than two (including two).

[0058] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0059] Based on the problems existing in the CT scanning system in the prior art, the present disclosure provides a CT scanning method, which is applied to the CT scanning system, wherein: Figure 2 As shown, the CT scanning system includes a scanning bed 10, a scanning bed support 20, a scanning gantry 30, an X-ray light source 40 and a position sensor 50. The position sensor is arranged on the scanning bed and moves along the movement direction of the scanning bed. The X-ray light source is fixed on the scanning gantry. Figure 1 is a flow chart of the CT scanning method provided by the embodiment of the present disclosure, such as Figure 1 As shown, CT scanning methods include:

[0060] S110, output a first control instruction to the position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range.

[0061] In a specific embodiment, outputting a control instruction to a position sensor to control the movement of the position sensor, and obtaining first position information of the position sensor relative to the scanning bed when the position sensor moves to a starting position of a scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to a termination position of the scanning range, includes: outputting a first control instruction to the position sensor to control the movement of the position sensor; when the position sensor moves to the starting position of the scanning range, outputting a second control instruction to the position sensor to control the position sensor to stop moving, and receiving the first position information of the position sensor relative to the scanning bed acquired by the position sensor; outputting the first control instruction to the position sensor again to control the movement of the position sensor; when the position sensor moves to the termination position of the scanning range, outputting a second control instruction to the position sensor to control the position sensor to stop moving, and receiving the second position information of the position sensor relative to the scanning bed acquired by the position sensor.

[0062] In the prior art, during the process of scanning a patient, after the doctor inputs the scanning protocol in the terminal device, it is first necessary to scan the positioning image, determine the patient's scanning start position and scanning end position based on the positioning image, and then scan the patient's scanning range between the scanning start position and the scanning end position again, that is, the scanning bed needs to move into the scanning frame twice, and each time the scanning bed moves into the scanning frame, it will cause a certain amount of X-ray radiation to the patient. Based on the problems existing in the prior art, the CT scanning method provided by the embodiment of the present disclosure is characterized in that a position sensor is arranged on the scanning bed, and the position sensor can move along the movement direction of the scanning bed. After the doctor inputs the scanning protocol on the terminal device, the terminal device first outputs a first control instruction to the position sensor to control the position sensor to move along the scanning bed. When the position sensor moves to the starting position of the patient's scanning range, the terminal device responds to the doctor's operation instruction and outputs a second control instruction to control the position sensor to stop moving. The position sensor records the first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range. After the doctor obtains the first position information of the position sensor relative to the scanning bed sent by the position sensor, the terminal device responds to the doctor's operation instruction and outputs the first control instruction to control the position sensor to continue moving along the scanning bed. When the position sensor moves to the ending position of the patient's scanning range, the terminal device responds to the doctor's operation instruction and controls the output of the second control instruction to control the position sensor to stop moving. The position sensor records the second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range, and sends the recorded second position information of the position sensor relative to the scanning bed to the terminal device.

[0063] The scanning protocol in the CT scanning system refers to a series of instructions and settings used to control the operating conditions and parameters of the CT scanner. These protocols ensure the accuracy and reliability of CT scanning, thereby obtaining high-quality medical images. CT scanning protocols usually include the following components:

[0064] (1) Scanning conditions: including scanning layer thickness, layer spacing, scanning time, etc. These parameters directly affect the resolution and noise level of the image.

[0065] (2) Use of contrast agents: For scans that require the use of contrast agents, the protocol will specify in detail the type, dose, and timing of use of the contrast agent to ensure the best enhancement effect.

[0066] (3) Radiation dose: In order to reduce the radiation dose received by the patient, the protocol will set the appropriate exposure time and current intensity.

[0067] (4) Image reconstruction parameters: including the selection of reconstruction algorithm, window width and window level, etc. These parameters affect the contrast and clarity of the image.

[0068] The CT scanning method provided by the embodiment of the present disclosure is to set a position sensor on the scanning bed of the CT scanning system, and the position sensor responds to the control instruction output by the terminal device and moves along the movement direction of the scanning bed. Since the doctor can obtain the movement position of the position sensor through the display terminal, when the doctor obtains through the display terminal that the position sensor moves to the starting position of the scanning range, the doctor outputs a second control instruction on the terminal device to control the position sensor to stop moving. At this time, after receiving the second control instruction, the position sensor stops moving, collects the first position information of the current position relative to the scanning bed, and then sends the collected first position information to the terminal device. After the doctor receives the first position information on the terminal device, the doctor outputs the first control instruction on the terminal device to control the movement of the position sensor. When the doctor obtains through the display terminal that the position sensor moves to the starting position of the scanning range again, the doctor outputs the second control instruction on the terminal device again to control the position sensor to stop moving again. At this time, after receiving the second control instruction, the position sensor stops moving, collects the second position information of the current position relative to the scanning bed, and then sends the collected second position information to the terminal device, and the position sensor ends moving.

[0069] It should be noted that, in the CT scanning method provided by the embodiment of the present disclosure, the movement of the position sensor to the starting position of the scanning range and the movement of the position sensor to the ending position of the scanning range are determined based on a visual alignment method.

[0070] It should be noted that the first position information of the position sensor relative to the scanning bed is also the first position information of the starting position of the scanning range relative to the scanning bed, and the second position information of the position sensor relative to the scanning bed is also the second position information of the ending position of the scanning range relative to the scanning bed.

[0071] S120: Acquire third position information of the scanning bed support relative to the scanning frame.

[0072] After the CT scanning equipment is placed, the position information of the scanning bed support relative to the scanning frame is fixed, that is, Figure 2 The third position information D of the middle scanning bed support relative to the scanning frame is a fixed value.

[0073] S130. Determine, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the starting position of the scanning range relative to the scanning rack and the position information of the scanning bed support relative to the scanning bed, and a second association relationship between the position information of the ending position of the scanning range relative to the scanning rack and the position information of the scanning bed support relative to the scanning bed.

[0074] In a specific implementation, determining a first association relationship between position information of a starting position of a scanning range relative to a scanning gantry and position information of a scanning bed relative to a scanning bed support and a second association relationship between position information of a terminating position of a scanning range relative to a scanning gantry and position information of a scanning bed relative to a scanning bed support according to the first position information, the second position information and the third position information includes: determining a first association relationship between position information of a starting position of a scanning range relative to a scanning gantry and position information of a scanning bed relative to a scanning bed support according to the first position information and the third position information; and determining a second association relationship between position information of a terminating position of a scanning range relative to a scanning gantry and position information of a scanning bed relative to the scanning bed support according to the second position information and the third position information.

[0075] Specific, combined Figure 2 After determining the first position information of the starting position of the scanning range relative to the scanning bed and the third position information of the scanning bed support relative to the scanning frame, a first association relationship between the position information of the starting position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support can be determined, wherein the first association relationship between the position information of the starting position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support satisfies:

[0076] ,

[0077] in, is the first position information of the starting position of the scanning range relative to the scanning bed, is the third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the starting position of the scanning range relative to the scanning frame.

[0078] After determining the second position information of the scanning range end position relative to the scanning bed and the third position information of the scanning bed support relative to the scanning frame, a first association relationship between the position information of the scanning range end position relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support can be determined, wherein the second association relationship between the position information of the scanning range end position relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support satisfies:

[0079] ,

[0080] in, is the second position information of the end position of the scanning range relative to the scanning bed, is the third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the end position of the scanning range relative to the scanning frame.

[0081] S140, determining the starting exposure time and the ending exposure time of the X-ray light source according to a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the ending position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support.

[0082] In a specific embodiment, determining the starting exposure time and ending exposure time of the X-ray light source according to a first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support and a second association relationship between position information of the ending position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support includes: acquiring position information of the scanning bed relative to the scanning bed support in a moving state; determining the position information of the starting position of the scanning range relative to the scanning gantry according to a first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support and position information of the scanning bed relative to the scanning bed support; determining the position information of the ending position of the scanning range relative to the scanning gantry according to a second association relationship between position information of the ending position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support and position information of the scanning bed relative to the scanning bed support; determining the starting exposure time of the X-ray light source according to the position information of the starting position of the scanning range relative to the scanning gantry; and determining the ending exposure time of the X-ray light source according to the position information of the ending position of the scanning range relative to the scanning gantry.

[0083] Continue to combine Figure 2 After determining the first correlation between the position information of the starting position of the scanning range relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support, it can be known from the first correlation that the position information of the scanning bed relative to the scanning bed support in the moving state satisfies: When the patient on the scanning bed moves from the starting position of the scanning range to the exposure position of the X-ray light source of the scanning gantry, the third control signal is output to control the X-ray light source to turn on.

[0084] Continue to combine Figure 2 After determining the second association relationship between the position information of the end position of the scanning range relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support, it can be known from the second association relationship that the position information of the scanning bed relative to the scanning bed support in the moving state satisfies: When the patient on the scanning bed moves from the starting position of the scanning range to the exposure position of the X-ray light source of the scanning frame, the fourth control signal is output to control the X-ray light source to turn on.

[0085] The CT scanning method provided by the embodiment of the present disclosure first outputs a control instruction to a position sensor to control the movement of the position sensor, and obtains first position information of the position sensor relative to a scanning bed when the position sensor moves to a starting position of a scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to a termination position of the scanning range; then obtains third position information of a scanning bed support relative to a scanning gantry; and determines a first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support, and a second association relationship between position information of the termination position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support, based on the first position information, the second position information, and the third position information; finally, determines a start exposure time and an end exposure time of an X-ray light source, based on the first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support, and the second association relationship between position information of the termination position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support. By arranging a position sensor on the scanning bed, the position sensor can move along the movement direction of the scanning bed. The position sensor moves to the starting position of the scanning range and the ending position of the scanning range in response to the control instruction and collects first position information of the starting position of the scanning range relative to the scanning bed and second position information of the ending position of the scanning range relative to the scanning bed. Then, through the first position information, the second position information and the third position information of the scanning bed support relative to the scanning frame, a first association relationship between the position information of the starting position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the ending position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support are established. Finally, by collecting the position information of the scanning bed relative to the scanning bed support in the moving state, the position information of the starting position of the scanning range relative to the scanning frame and the position information of the ending position of the scanning range relative to the scanning frame are determined, and then the exposure time of the X-ray is determined. The scanning of the patient's scanning range can be realized without scanning the patient with a positioning image, thereby improving the scanning efficiency and reducing the secondary radiation to the patient.

[0086] Based on the above embodiments, the present disclosure also provides a CT scanning device. Figure 3 is a schematic diagram of the structure of a CT scanning device provided by an embodiment of the present disclosure, such as Figure 3 As shown, the CT scanning device includes:

[0087] A control instruction output module 310 is used to output a control instruction to the position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range;

[0088] A third position information acquisition module 320 is used to acquire third position information of the scanning bed support relative to the scanning frame;

[0089] The association relationship determination module 330 is used to determine, based on the first position information, the second position information and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support;

[0090] The exposure time determination module 340 is used to determine the start exposure time and the end exposure time of the X-ray light source according to a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support.

[0091] The CT scanning device provided by the embodiment of the present disclosure first outputs a control instruction to the position sensor to control the movement of the position sensor, and obtains first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range; then obtains third position information of the scanning bed support relative to the scanning gantry; and determines a first correlation relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second correlation relationship between the position information of the ending position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support according to the first position information, the second position information and the third position information; finally, determines the starting exposure time and the ending exposure time of the X-ray light source according to the first correlation relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and the second correlation relationship between the position information of the ending position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support. By arranging a position sensor on the scanning bed, the position sensor can move along the movement direction of the scanning bed. The position sensor moves to the starting position of the scanning range and the ending position of the scanning range in response to the control instruction and collects first position information of the starting position of the scanning range relative to the scanning bed and second position information of the ending position of the scanning range relative to the scanning bed. Then, through the first position information, the second position information and the third position information of the scanning bed support relative to the scanning frame, a first association relationship between the position information of the starting position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the ending position of the scanning range relative to the scanning frame and the position information of the scanning bed relative to the scanning bed support are established. Finally, by collecting the position information of the scanning bed relative to the scanning bed support in the moving state, the position information of the starting position of the scanning range relative to the scanning frame and the position information of the ending position of the scanning range relative to the scanning frame are determined, and then the exposure time of the X-ray is determined. The scanning of the patient's scanning range can be realized without scanning the patient with a positioning image, thereby improving the scanning efficiency and reducing the secondary radiation to the patient.

[0092] In a specific embodiment, the outputting control instructions to the position sensor to control the movement of the position sensor, and obtaining first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range, includes:

[0093] Outputting a first control instruction to the position sensor to control the movement of the position sensor;

[0094] When the position sensor moves to the starting position of the scanning range, output a second control instruction to the position sensor to control the position sensor to stop moving, and receive first position information of the position sensor relative to the scanning bed collected by the position sensor;

[0095] outputting the first control instruction to the position sensor again to control the movement of the position sensor;

[0096] When the position sensor moves to the end position of the scanning range, a second control instruction is output to the position sensor to control the position sensor to stop moving, and second position information of the position sensor relative to the scanning bed collected by the position sensor is received.

[0097] In a specific implementation, determining, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, includes:

[0098] Determine, based on the first position information and the third position information, a first association relationship between the position information of the scanning range start position relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support;

[0099] A second association relationship between the position information of the scanning range end position relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support is determined according to the second position information and the third position information.

[0100] In a specific implementation, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support satisfies:

[0101] ,

[0102] in, is the first position information of the starting position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the starting position of the scanning range relative to the scanning frame.

[0103] In a specific implementation, the second association relationship between the position information of the scanning range termination position relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support satisfies:

[0104] ,

[0105] in, is second position information of the end position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the end position of the scanning range relative to the scanning frame.

[0106] In a specific embodiment, determining the start exposure time and the end exposure time of the X-ray light source according to a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support includes:

[0107] Acquiring position information of the scanning bed relative to the scanning bed support in a moving state;

[0108] Determining the position information of the starting position of the scanning range relative to the scanning gantry according to a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support;

[0109] Determine the position information of the end position of the scanning range relative to the scanning gantry according to a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support;

[0110] Determining a starting exposure time of the X-ray light source according to position information of a starting position of the scanning range relative to the scanning gantry;

[0111] The termination exposure time of the X-ray light source is determined according to the position information of the termination position of the scanning range relative to the scanning frame.

[0112] In a specific implementation, determining the starting exposure time of the X-ray light source according to the position information of the starting position of the scanning range relative to the scanning gantry includes:

[0113] When the position information of the starting position of the scanning range relative to the scanning gantry is zero, determining the starting exposure time of the X-ray light source;

[0114] The step of determining the termination exposure time of the X-ray light source according to the position information of the termination position of the scanning range relative to the scanning frame comprises:

[0115] When the position information of the end position of the scanning range relative to the scanning gantry is zero, the end exposure time of the X-ray light source is determined.

[0116] The present application also provides a computer device. Figure 4 , Figure 4 This is a basic structural block diagram of the computer device in this embodiment.

[0117] The computer device includes a memory 510 and a processor 520 that are connected to each other through a system bus. It should be noted that the figure only shows a computer device with components 510-520, but it should be understood that it is not required to implement all the components shown, and more or fewer components can be implemented instead. Among them, those skilled in the art can understand that the computer device here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA), digital signal processors (Digital Signal Processor, DSP), embedded devices, etc.

[0118] Computer devices can be computing devices such as desktop computers, notebooks, PDAs, and cloud servers. Computer devices can interact with users through keyboards, mice, remote controls, touch pads, or voice control devices.

[0119] The memory 510 includes at least one type of readable storage medium, and the readable storage medium includes a non-volatile memory or a volatile memory, such as a flash memory, a hard disk, a multimedia card, a card-type memory (such as an SD or DX memory, etc.), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, etc., and the RAM may include a static RAM or a dynamic RAM. In some embodiments, the memory 510 may be an internal storage unit of a computer device, such as a hard disk or a memory of the computer device. In other embodiments, the memory 510 may also be an external storage device of a computer device, such as a plug-in hard disk, a smart memory card (SMC), a secure digital (SD) card, or a flash card (Flash Card), etc., equipped on the computer device. Of course, the memory 510 may also include both an internal storage unit of the computer device and an external storage device thereof. In this embodiment, the memory 510 is generally used to store an operating system and various application software installed on the computer device, such as the program code of the above method, etc. In addition, the memory 510 may also be used to temporarily store various data that have been output or are to be output.

[0120] The processor 520 is generally used to perform the overall operation of the computer device. In this embodiment, the memory 510 is used to store program codes or instructions, the program code includes computer operation instructions, and the processor 520 is used to execute the program codes or instructions stored in the memory 510 or process data, such as running the program code of the above method.

[0121] In this article, the bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus system can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0122] Another embodiment of the present application also provides a computer-readable medium, which may be a computer-readable signal medium or a computer-readable medium. A processor in a computer reads a computer-readable program code stored in the computer-readable medium, so that the processor can execute the functional actions specified in each step or a combination of steps in the above method; and generate a device for implementing the functional actions specified in each block or a combination of blocks in the block diagram.

[0123] Computer-readable media include but are not limited to electronic, magnetic, optical, electromagnetic, infrared memory or semiconductor systems, devices or apparatuses, or any appropriate combination of the foregoing, the memory is used to store program codes or instructions, the program codes include computer operating instructions, and the processor is used to execute the program codes or instructions of the above methods stored in the memory.

[0124] For the definitions of memory and processor, please refer to the description of the aforementioned computer device embodiment and will not be repeated here.

[0125] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0126] Each functional unit or module in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0127] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0128] Unless the context clearly indicates otherwise, the singular form of the words used herein and in the appended claims includes the plural and vice versa. Thus, when referring to the singular, the plural form of the corresponding term is generally included. Similarly, the words "comprise" and "include" are to be interpreted as inclusive rather than exclusive. Likewise, the terms "include" and "or" should be interpreted as inclusive unless such interpretation is expressly prohibited herein. Where the term "example" is used herein, particularly when it is located after a group of terms, the "example" is merely exemplary and illustrative and should not be considered exclusive or comprehensive.

[0129] Further aspects and scopes of adaptability become apparent from the description provided herein. It should be understood that various aspects of the present application can be implemented individually or in combination with one or more other aspects. It should also be understood that the description and specific embodiments herein are intended for purposes of illustration only and are not intended to limit the scope of the present application.

[0130] Several embodiments of the present disclosure are described in detail above, but it is obvious that those skilled in the art can make various modifications and variations to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. The protection scope of the present disclosure is defined by the attached claims.

Claims

1. A CT scanning method, applied to a CT scanning system, wherein the CT scanning system comprises a scanning bed, a scanning bed support, a scanning frame, an X-ray light source and a position sensor, wherein the position sensor is arranged on the scanning bed and moves along the movement direction of the scanning bed, and the X-ray light source is fixed on the scanning frame, characterized in that: include: Outputting a control instruction to the position sensor to control the movement of the position sensor, and obtaining first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range; Acquiring third position information of the scanning bed support relative to the scanning frame; Determine, according to the first position information, the second position information and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support; The starting exposure time and the ending exposure time of the X-ray light source are determined according to a first association relationship between position information of the starting position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support and a second association relationship between position information of the ending position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support.

2. The method according to claim 1, characterized in that: The output control instruction to the position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range, includes: Outputting a first control instruction to the position sensor to control the movement of the position sensor; When the position sensor moves to the starting position of the scanning range, output a second control instruction to the position sensor to control the position sensor to stop moving, and receive first position information of the position sensor relative to the scanning bed collected by the position sensor; outputting the first control instruction to the position sensor again to control the movement of the position sensor; When the position sensor moves to the end position of the scanning range, a second control instruction is output to the position sensor to control the position sensor to stop moving, and second position information of the position sensor relative to the scanning bed collected by the position sensor is received.

3. The method according to claim 1, characterized in that The determining, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, comprises: Determine, based on the first position information and the third position information, a first association relationship between the position information of the scanning range start position relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support; A second association relationship between the position information of the scanning range end position relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support is determined according to the second position information and the third position information.

4. The method according to claim 3, characterized in that A first association relationship between the position information of the starting position of the scanning range relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support satisfies: ， in, is the first position information of the starting position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the starting position of the scanning range relative to the scanning frame.

5. The method according to claim 3, characterized in that: The second association relationship between the position information of the scanning range end position relative to the scanning rack and the position information of the scanning bed relative to the scanning bed support satisfies: ， in, is second position information of the end position of the scanning range relative to the scanning bed, is third position information of the scanning bed support relative to the scanning frame, is the position information of the scanning bed relative to the scanning bed support, It is the position information of the end position of the scanning range relative to the scanning frame.

6. The method according to claim 1, characterized in that The determining the start exposure time and the end exposure time of the X-ray light source according to a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support comprises: Acquiring position information of the scanning bed relative to the scanning bed support in a moving state; Determining the position information of the starting position of the scanning range relative to the scanning gantry according to a first association relationship between the position information of the starting position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support; Determine the position information of the end position of the scanning range relative to the scanning gantry according to a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and the position information of the scanning bed relative to the scanning bed support; Determining a starting exposure time of the X-ray light source according to position information of a starting position of the scanning range relative to the scanning gantry; The termination exposure time of the X-ray light source is determined according to the position information of the termination position of the scanning range relative to the scanning frame.

7. The method according to claim 6, characterized in that The step of determining the starting exposure time of the X-ray light source according to the position information of the starting position of the scanning range relative to the scanning frame comprises: When the position information of the starting position of the scanning range relative to the scanning gantry is zero, determining the starting exposure time of the X-ray light source; The step of determining the termination exposure time of the X-ray light source according to the position information of the termination position of the scanning range relative to the scanning frame comprises: When the position information of the end position of the scanning range relative to the scanning gantry is zero, the end exposure time of the X-ray light source is determined.

8. A CT scanning device, applied to a CT scanning system, the CT scanning system comprising a scanning bed, a scanning bed support, a scanning frame, an X-ray light source and a position sensor, the position sensor being arranged on the scanning bed and moving along the movement direction of the scanning bed, the X-ray light source being fixed on the scanning frame, characterized in that: include: a control instruction output module, used to output a control instruction to the position sensor to control the movement of the position sensor, and obtain first position information of the position sensor relative to the scanning bed when the position sensor moves to the starting position of the scanning range, and second position information of the position sensor relative to the scanning bed when the position sensor moves to the ending position of the scanning range; A third position information acquisition module, used to acquire third position information of the scanning bed support relative to the scanning frame; an association relationship determination module, configured to determine, based on the first position information, the second position information, and the third position information, a first association relationship between the position information of the start position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support, and a second association relationship between the position information of the end position of the scanning range relative to the scanning gantry and the position information of the scanning bed relative to the scanning bed support; an exposure time determination module, for determining a start exposure time and an end exposure time of the X-ray light source according to a first association relationship between position information of a start position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support, and a second association relationship between position information of a termination position of the scanning range relative to the scanning gantry and position information of the scanning bed relative to the scanning bed support.

9. A computer device, characterized in that: include: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 7.

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

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