CN114305462A - 0-point automatic exposure control method and system for medical X-ray equipment - Google Patents
0-point automatic exposure control method and system for medical X-ray equipment Download PDFInfo
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- 238000003759 clinical diagnosis Methods 0.000 description 4
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Abstract
The invention provides a 0-point automatic exposure control method and a 0-point automatic exposure control system for medical X-ray equipment. The invention has the beneficial effects that: on the premise of ensuring the quality of clinical examination, the device ensures that a detected person absorbs smaller dose, reduces the influence of X-rays on the detected person as much as possible and realizes 0-point automatic exposure; the X-ray shooting is more convenient and efficient, and the inspection time period is shortened; while greatly reducing the empirical requirements on the parameter configuration of the operator.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a 0-point automatic exposure control method and system for medical X-ray equipment.
Background
In the medical field, X-rays are widely used for medical diagnosis, especially for non-invasive diagnosis of conditions in a patient.
The X-ray can penetrate through a human body to the imaging device to finally generate a diagnostic image, and different tissues in the human body have different absorption intensities of the X-ray, so that the X-ray penetrating through the human body to the imaging device has difference in quantity, and the difference can cause gray level difference in the diagnostic image, thereby helping doctors to diagnose. Since excessive X-rays for a long time may cause damage to the human body, the exposure dose of X-rays received by the human body during medical diagnosis is strictly controlled. The parameters of X-rays for medical diagnosis are mainly: the three parameters of voltage kV, current mA and exposure time s determine the exposure of X-rays, the quality of a final diagnostic image and the influence of the X-rays on a detected person.
The key difficulties of exposure control are two:
1. the diagnostic images are consistent, that is, the generated diagnostic images should be consistent as much as possible for different parts of patients with different body types.
2. The X-ray radiation dose is reduced as much as possible under the premise of ensuring that the generated image meets the requirements of clinical diagnosis, and the influence of the X-ray radiation on the detected person is controlled to be the lowest as much as possible.
Some existing devices do not have a complete automatic exposure control technology, and doctors or technicians are required to manually adjust parameters such as voltage kV, current mA, exposure time s and the like according to experience aiming at specific conditions such as the body type of a patient, the thickness of an examined part and the like to generate a diagnostic image. The image can not meet the requirement of clinical diagnosis due to the inadequately set parameters caused by improper operation or insufficient technical experience of a doctor, and the resetting of the parameters and the re-exposure examination not only increase the inspection time and aggravate the risk of the patient, but also additionally increase the X-ray dose of doctors and patients.
Disclosure of Invention
The invention provides a 0-point automatic exposure control method and system for medical X-ray equipment, which solve the problems that the medical X-ray equipment in the prior art cannot automatically control exposure at 0 point and the like.
In a first aspect of the present invention, there is provided a 0-spot automatic exposure control method for a medical X-ray apparatus, comprising the steps of:
(1) determining the part to be detected of the person to be detected, and operating the medical X-ray equipment by an operator according to the requirement of the person to be detected to select the part to be detected;
(2) detecting the parameters of the detected person after the detected person enters the sensing range of the medical X-ray equipment;
(3) calculating exposure parameters of the medical X-ray equipment according to the parameters detected in the step (2) by combining a human body structure proportion model and a big data model;
(4) and (4) optionally and automatically controlling the window size of the beam-forming device, determining the body position of the examinee, and then performing exposure completion examination by the medical X-ray equipment according to the exposure parameters calculated in the step (3) after the operator executes the exposure instruction.
In the step (2), the user is sensed to enter the sensing range of the medical X-ray equipment through one or more combinations of a visual camera, a radar and an infrared probe, and the parameters of the user are detected, wherein the parameters of the user comprise one or more of body position, body thickness, weight, shoulder thickness, height, shoulder height, leg length and knee height of the user.
The parameters of the medical X-ray equipment calculated by the invention include but are not limited to: voltage kV, current mA, exposure time s, current time product mAs, beam splitter windowing size and center or starting point of the detected part.
In the step (3), one or more of a high-performance CPU, a GPU, an MCU and a FPAG are combined to calculate the parameters of the medical X-ray equipment.
In a second aspect of the present invention, there is provided a 0-spot automatic exposure control system for a medical X-ray apparatus, comprising:
the perception detection module is used for perceiving that the person to be detected enters a perception range and detecting the parameters of the person to be detected;
the calculation module is used for calculating parameters of the medical X-ray equipment according to the detected part of the detected person, the parameters of the detected person, the human body structure proportion model and the big data model;
and the execution module enables the medical X-ray equipment to execute the exposure instruction to complete the examination according to the parameters calculated by the calculation module.
The perception detection module is one or a combination of a visual camera, a radar and infrared detection.
The parameters of the subject include one or more of body position, body thickness, body weight, shoulder thickness, height, shoulder height, leg length and knee height.
The parameters of the medical X-ray equipment calculated by the calculation module comprise: voltage kV, current mA, exposure time s, current time product mAs, beam splitter windowing size and center or starting point of the detected part.
The computing module of the invention adopts one or more combinations of high-performance CPU, GPU, MCU and FPAG.
The execution module transmits the calculation result to the high-voltage generator, the beam splitter and the product rack through a serial port and network card communication mode by the calculation module, or transmits the calculation result to the high-voltage generator, the beam splitter and the product rack after being transmitted by the console, and the high-voltage generator, the beam splitter and the product rack receive and execute the exposure parameter instruction.
The medical X-ray device in the present invention includes, but is not limited to, a diagnostic X-ray machine (e.g., a vehicle-mounted X-ray machine, a photographic X-ray machine, a fluoroscopy X-ray machine, a dual-energy X-ray bone densitometer, an oral X-ray machine, a breast X-ray machine, a gastrointestinal X-ray machine, a mobile X-ray machine, a portable X-ray machine, an angiography X-ray machine, a urinary X-ray machine, a limb digital tomography X-ray machine, a limb cone beam computed tomography device), an X-ray computed tomography device (CT) (e.g., an X-ray computed tomography device, a vehicle-mounted X-ray computed tomography device, a head X-ray computed tomography device, a mobile X-ray computed tomography device).
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of any embodiment of the invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
The invention has the beneficial effects that: the invention provides a 0-point automatic exposure control method and a system of medical X-ray equipment, which can decide and calculate proper voltage kV and small current mAs parameters under the principle of reducing the influence of X-rays on a detected person on the premise of generating a detection report meeting clinical requirements, automatically control the windowing size of a beam splitter, and finish the detection without setting exposure parameters and executing exposure instructions after determining the shooting pendulum position of the detected person. The clinical diagnosis quality is ensured, and the influence of X-rays on a detected person is reduced as much as possible. Meanwhile, the experience requirement of an operation technician is greatly reduced, and a technician without any experience can check a very professional test report through the system.
Drawings
FIG. 1 is a flow chart of a 0-point automatic exposure control method for medical X-ray equipment according to the present invention;
fig. 2 is a schematic diagram of an overall connection structure of a 0-point automatic exposure control system of a medical X-ray device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The invention provides a 0-point automatic exposure control method and a 0-point automatic exposure control system for medical X-ray equipment, wherein a detected person judges parameters of the detected person after entering a sensing range through a sensing detection module, the parameters of voltage kV, current mAs and the like of the medical X-ray equipment are calculated in a decision mode according to the set detection body position of the medical X-ray equipment and by combining a human body structure proportion model and a big data model, and an instruction is given to an execution module to complete the full-automatic setting of the exposure parameters of the medical X-ray equipment, so that the detected person is ensured to absorb smaller dose on the premise of ensuring the clinical detection quality, the influence of X-rays on the detected person is reduced as much as possible, and the 0-point automatic exposure is realized. The system may have self-learning capabilities.
The 0-point automatic exposure control method for the medical X-ray equipment comprises the following steps:
(1) determining the part to be detected of the detected person, and operating the medical X-ray equipment by an operator to select the part to be detected;
(2) detecting the parameters of the detected person after the detected person enters the sensing range of the medical X-ray equipment;
(3) calculating parameters of the medical X-ray equipment according to the parameters detected in the step (2) by combining a human body structure proportion model and a big data model;
(4) and (4) automatically controlling the window size of the beam-forming device, and setting the medical X-ray equipment to execute an exposure instruction according to the parameters calculated in the step (3) to complete the examination after the body position of the examinee is determined.
Sensing that the detected person enters a sensing range of the medical X-ray equipment and detecting the parameters of the detected person through one or more combinations of a visual camera, a radar and an infrared probe in the step (2), wherein the parameters of the detected person comprise one or more of the body position, the body thickness, the weight, the shoulder thickness, the height, the shoulder height, the leg length and the knee height of the detected person.
The above calculating the parameters of the medical X-ray device includes: voltage kV, current mA, exposure time s, current time product mAs, beam splitter windowing size and center or starting point of the detected part.
And (3) calculating the parameters of the medical X-ray equipment by adopting one or more of high-performance CPU, GPU, MCU and FPAG.
The 0-point automatic exposure control method of the medical X-ray equipment comprises a perception detection module, a calculation module and an execution module.
The perception detection module is used for perceiving that the person to be detected enters a perception range and detecting the parameters of the person to be detected;
the calculation module is used for calculating parameters of the medical X-ray equipment according to the detected part of the detected person, the parameters of the detected person, the human body structure proportion model and the big data model;
and the execution module enables the medical X-ray equipment to execute the exposure instruction to complete the examination according to the parameters calculated by the calculation module.
The sensing detection module is connected with the calculation module, the detected parameters of the detected person are transmitted to the calculation module, the calculation module calculates the parameters of the medical X-ray equipment according to the detected part of the detected person, the parameters of the detected person, the human body structure proportion model and the big data model, the calculation module is connected with a high-voltage generator, a beam splitter, a product rack and the like of the medical X-ray equipment in a communication mode of a serial port, a network card and the like, the calculated parameters are transmitted to the high-voltage generator, the beam splitter, the product rack and the like, or the calculated parameters are transmitted to the high-voltage generator, the beam splitter, the product rack and the like of an electric cabinet through a control console/and the like, and the high-voltage generator, the beam splitter, the product rack and the like receive and execute exposure parameter instructions.
The perception detection module can be one or two or more of a visual camera, a radar and an infrared probe, but is not limited to the above perception components.
The visual camera may be a depth camera, a monocular camera, a binocular camera, a multi-view camera, but is not limited to the above cameras.
The radar may be an ultrasonic radar, a millimeter wave radar, and a laser radar, but is not limited to the above radar.
The camera can be used for identifying the detected person, and one or two of the radar and the infrared can be used for sensing the body thickness, but not limited to the above sensing modes, so that the parameters of the body thickness, the body position and the like of the detected person can be sensed.
The parameter of the subject may be one or several of body position, body thickness, body weight, shoulder thickness, height, shoulder height, leg length, knee height, or all of them, but is not limited to the above parameters.
The human body structure proportion model can distinguish models of gender and age groups, but is not limited to the above classification.
The calculation module is used for judging parameters such as the body thickness of the part to be detected, the center or the starting point of the part to be detected and the like according to the body position selected by an operator by detecting the parameters of the person to be detected and combining the human body structure model and the big data model, and calculating the proper parameters such as the voltage kV, the current mA and the like.
The computing module may adopt one or a combination of high-performance CPU, GPU, MCU and FPAG, but is not limited to the above computing components.
The big data model may be a clinically validated data model, but is not limited to the above model.
The calculated parameters of the medical X-ray device may be kV, mAs, mA, ms, beam splitter window size, center or starting point of the examined region, etc., but are not limited to the above parameters.
The system can have a self-learning function, fully absorbs the operation habit and the adjustment skill of a learning operation technician and adjusts the big data model of the medical X-ray equipment on the premise of ensuring the quality of an examination report and ensuring low dosage. The more "smart" the medical X-ray apparatus incorporating the system.
The execution module sends the calculated parameters to the high-voltage generator, the beam splitter, the product rack and the like through the communication modes such as a serial port, a network card and the like by the calculation module, or sends the calculated parameters to the high-voltage generator, the beam splitter, the product rack, the motor of the product rack and the like through the control console and the electrical cabinet, and the high-voltage generator, the beam splitter, the motor of the product rack and the like receive exposure parameter instructions. The executing means is not limited to the above receiving means and the like.
The communication mode can be a serial port or a network port, but is not limited to the above mode.
The medical X-ray device in the present invention includes, but is not limited to, a diagnostic X-ray machine (e.g., a vehicle-mounted X-ray machine, a photographic X-ray machine, a fluoroscopy X-ray machine, a dual-energy X-ray bone densitometer, an oral X-ray machine, a breast X-ray machine, a gastrointestinal X-ray machine, a mobile X-ray machine, a portable X-ray machine, an angiography X-ray machine, a urinary X-ray machine, a limb digital tomography X-ray machine, a limb cone beam computed tomography device), an X-ray computed tomography device (CT) (e.g., an X-ray computed tomography device, a vehicle-mounted X-ray computed tomography device, a head X-ray computed tomography device, a mobile X-ray computed tomography device).
Examples
When the chest of the digital X-ray machine is checked, an operator operates the digital X-ray machine to select chest checking, when a detected person enters a sensing range, the 0-point exposure system starts to calculate the body position, body thickness, weight, shoulder thickness, height, shoulder height, leg length, knee height and other parameters of the detected person, and the appropriate kV and smaller mAs parameters are determined and calculated by combining a human body structure proportion model and a big data model on the premise of ensuring that a detection report meeting clinical requirements can be generated under the principle of reducing the influence of X-rays on the detected person as much as possible, the window opening size of a light beam splitter is automatically controlled, and after the position of the shooting technician of the detected person is determined, the operation is carried out without setting exposure parameters, and an exposure instruction is executed to finish checking. The clinical diagnosis quality is ensured, and the influence of X-rays on a detected person is reduced. Meanwhile, the experience requirement of an operation technician is reduced, and a technician without any experience can check a very professional inspection report through the system. While the operator technician continues to insist on the adjustment, the system will learn itself.
Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (10)
1. A0-point automatic exposure control method of medical X-ray equipment is characterized by comprising the following steps:
(1) determining the part to be detected of the detected person, and operating the medical X-ray equipment by an operator to select the part to be detected;
(2) detecting the parameters of the detected person after the detected person enters the sensing range of the medical X-ray equipment;
(3) calculating parameters of the medical X-ray equipment according to the parameters detected in the step (2) by combining a human body structure proportion model and a big data model;
(4) and (4) automatically controlling the window size of the beam-forming device, and setting the medical X-ray equipment to execute an exposure instruction according to the parameters calculated in the step (3) to complete the examination after the body position of the examinee is determined.
2. The 0-point automatic exposure control method for medical X-ray equipment according to claim 1, wherein the step (2) senses that the subject enters the sensing range of the medical X-ray equipment through one or more combinations of a vision camera, a radar and an infrared probe and detects the parameters of the subject, and the parameters of the subject comprise one or more of body position, body thickness, weight, shoulder thickness, height, shoulder height, leg length and knee height of the subject.
3. The 0-point automatic exposure control method of medical X-ray equipment according to claim 1, wherein the calculating parameters of the medical X-ray equipment comprises: voltage kV, current mA, exposure time s, current time product mAs, beam splitter windowing size and center or starting point of the detected part.
4. The method for controlling 0-point automatic exposure of medical X-ray equipment according to claim 1, wherein in the step (3), one or more of a high-performance CPU, a GPU, a MCU and a FPAG are combined to calculate the exposure parameters of the medical X-ray equipment.
5. A0-point automatic exposure control system of a medical X-ray device is characterized by comprising:
the perception detection module is used for perceiving that the person to be detected enters a perception range and detecting the parameters of the person to be detected;
the calculation module is used for calculating exposure parameters of the medical X-ray equipment according to the detected part of the detected person, the parameters of the detected person, the human body structure proportion model and the big data model;
and the execution module enables the medical X-ray equipment to execute the exposure instruction to complete the examination according to the parameters calculated by the calculation module.
6. The 0-point automatic exposure control system of medical X-ray equipment according to claim 5, wherein the perception detection module is one or more combination of a visual camera, a radar and an infrared detection.
7. The 0-point automatic exposure control system of medical X-ray equipment according to claim 5, wherein the parameters of the subject include one or more of body position, body thickness, weight, shoulder thickness, height, shoulder height, leg length, and knee height.
8. The 0-point automatic exposure control system of medical X-ray equipment according to claim 5, wherein the parameters of the medical X-ray equipment calculated by the calculation module comprise: voltage kV, current mA, exposure time s, current time product mAs, beam splitter windowing size and center or starting point of the detected part.
9. The 0-point automatic exposure control system of medical X-ray equipment according to claim 5, wherein the computing module adopts one or more combination of high-performance CPU, GPU, MCU and FPAG.
10. The 0-point automatic exposure control system of medical X-ray equipment according to claim 5, wherein the execution module transmits the calculation result to the high voltage generator, the beam splitter and the product rack through serial/network card communication by the calculation module, and the high voltage generator, the beam splitter, the product rack and the motor of the product rack receive and execute the exposure parameter command.
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| CN110811654A (en) * | 2019-11-12 | 2020-02-21 | 飞瑞医疗器械(嘉兴)有限公司 | X-ray exposure control system and control method thereof |
-
2021
- 2021-12-24 CN CN202111604676.8A patent/CN114305462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735934Y (en) * | 2004-05-08 | 2005-10-26 | 广西壮族自治区柳州市自动化科学研究所 | Automatic chest X-ray photography table |
| CN206453780U (en) * | 2016-11-09 | 2017-09-01 | 深海精密科技（深圳）有限公司 | C-arm X-ray production apparatus automatic exposure control device |
| CN110575193A (en) * | 2018-06-08 | 2019-12-17 | 西安九洲生物材料有限公司 | Automatic perspective exposure remote control method for dental X-ray machine |
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