Quality control system and method for medical electron linear accelerator

Abstract

The application discloses a quality control system and method of a medical electronic linear accelerator, and the quality control system comprises the following: an upper computer, an industrial computer, an MLC positioning accuracy module, a gantry angle detection module, a treatment bed positioning accuracy detection module, an ARM motion control positioning accuracy module and a CBCT motion control positioning accuracy module; the upper computer generates a quality control report according to the detection results collected by the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module and the CBCT motion control positioning accuracy module. The application can effectively reduce the time required for periodic detection of the medical electronic linear accelerator, reduce the manpower and material resources required in the detection process, realize complete multiple quality control plans, issue a quality control report, and accurately and intuitively express the quality inspection result.

Description

Technical Field

[0001] This invention belongs to the field of medical accelerator technology, specifically relating to a quality control system and method for a medical electron linear accelerator. Background Technology

[0002] The quality inspection process for traditional medical linear accelerators is cumbersome, requiring separate quality control for treatment functions such as the gantry, grating (MLC), treatment bed, image-guided system IVS (MVARM), and cone-beam computed tomography (CBCT) (KVARM). This process demands significant investment in manpower and testing equipment, resulting in high production costs for the medical device manufacturing industry.

[0003] When hospitals use medical linear accelerators, they need to conduct regular quality inspections. These inspections, similar to factory inspections, require qualified doctors who have received professional guidance from the medical device manufacturer. This process is time-consuming and incurs excessive time costs for doctors.

[0004] The quality inspection process for traditional medical linear accelerators is subject to human error, which affects the accuracy of the inspection. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a quality control system and method for a medical linear accelerator.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] On one hand, this invention discloses a quality control system for a medical linear accelerator, comprising: a host computer, an industrial computer, an MLC positioning accuracy module, a gantry angle detection module, a treatment bed positioning accuracy detection module, an ARM motion control positioning accuracy module, and a CBCT motion control positioning accuracy module;

[0008] The host computer sends quality control commands to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module via the industrial control computer.

[0009] The MLC positioning accuracy module is used to acquire the real-time position of the grating blades;

[0010] The rack angle detection module is used to collect the real-time position of the rack angle;

[0011] The treatment bed positioning accuracy detection module is used to collect the real-time position of the treatment bed;

[0012] The ARM motion control positioning accuracy module is used to acquire the real-time position of the MVARM.

[0013] The CBCT motion control positioning accuracy module is used to acquire the real-time position of the KVARM.

[0014] The host computer is used to generate quality control reports based on the detection results collected by the MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, and CBCT motion control positioning accuracy module.

[0015] Based on the above technical solution, the following improvements can be made:

[0016] As a preferred option, the industrial computer and / or host computer are electrically connected to the one-button QA button.

[0017] As a preferred embodiment, the MLC positioning accuracy module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module each include: one or more absolute encoders; the gantry angle detection module includes: an angle sensor.

[0018] As a preferred option, the host computer is equipped with an ITC system.

[0019] On the other hand, the present invention also discloses a quality control method for a medical linear accelerator, which utilizes any of the above-mentioned quality control systems and specifically includes the following:

[0020] The host computer sends a QA signal to the industrial control computer;

[0021] The industrial control computer receives the QA signal and sends quality control instructions to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module.

[0022] The MLC positioning accuracy module acquires the real-time position of the grating blades, the gantry angle detection module acquires the real-time position of the gantry angle, the treatment bed positioning accuracy detection module acquires the real-time position of the treatment bed, the ARM motion control positioning accuracy module acquires the real-time position of the MVARM, and the CBCT motion control positioning accuracy module acquires the real-time position of the KVARM.

[0023] The MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, and CBCT motion control positioning accuracy module feed the detection results back to the host computer via an industrial control computer.

[0024] The host computer generates a quality control report based on the test results.

[0025] As a preferred option, the quality control method further includes: a method for generating a fitting straight line of the position-absolute encoder electrical signal values ​​for each field of the grating MLC. This fitting straight line is used as a benchmark for verifying the positioning accuracy of the grating MLC blade motion control during the QA process. The specific generation method includes the following:

[0026] During the calibration of the positioning accuracy of the grating MLC blade motion control, with the frame at 0°, the host computer sets multiple sizes of the grating field and uses the IBA three-dimensional water tank to collect dose values ​​to determine whether the grating blade movement position is correct. At the same time, the host computer reads the electrical signal value fed back by the absolute encoder under each field of the grating MLC and sends it to the host computer. The host computer generates a fitting straight line about the position of each field of the grating MLC and the electrical signal value of the absolute encoder.

[0027] As a preferred embodiment, the quality control method further includes: a method for generating a fitted straight line between the rack angle and the electrical signal value of the angle sensor. This fitted straight line is used as the verification benchmark for the rack angle during the QA process. The specific generation method includes the following:

[0028] During the calibration of the rack angle, the rack is rotated to multiple different angle positions according to the level measuring instrument. At the same time, the electrical signal values ​​fed back by the angle sensor at each angle of the rack are read and sent to the host computer. The host computer generates a fitted straight line about the rack angle and the angle sensor electrical signal value.

[0029] As a preferred embodiment, the quality control method further includes: a method for generating the fitting straight lines of the LNG axis movement of the treatment bed versus the absolute encoder electrical signal value, the LAT axis movement of the treatment bed versus the absolute encoder electrical signal value, and the VRT axis movement of the treatment bed versus the absolute encoder electrical signal value. These three fitting straight lines are used as the benchmark for verifying the movement of the treatment bed under three degrees of freedom during the QA process. The specific generation method includes the following:

[0030] During the calibration of the positioning accuracy of the treatment bed, the LNG axis of the treatment bed moves a certain distance according to the cross laser light on the wall shining on the scale indicator line of the bed board. At the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed moving this distance along the LNG axis is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed LNG axis and the absolute encoder electrical signal value.

[0031] The treatment bed LAT axis moves a certain distance, and at the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed LAT axis moving that distance is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed LAT axis and the absolute encoder electrical signal value.

[0032] The treatment bed VRT axis moves a certain distance, and at the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed VRT axis moving that distance is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed VRT axis and the absolute encoder electrical signal value.

[0033] As a preferred option, the quality control method also includes: a method for generating the fitting straight lines of ARMINLINE direction movement amount versus encoder feedback electrical signal value and ARMCROSSLINE direction movement amount versus encoder feedback electrical signal value. These two fitting straight lines are used as the verification benchmark for the positioning accuracy of ARM motion control during the QA process. The specific generation method includes the following:

[0034] During the calibration of the positioning accuracy of ARM motion control, with the frame at 0°, the MVARM image board is turned on, and the position of the MVARM image board at this time is defined as the initial zero point. The scale lines of the INLINE and CROSSLINE directions of the MVARM image board are aligned with the laser lines emitted by the wall laser lights. The position of the MVARM image board obtained is the isocenter position of ARM motion control.

[0035] Based on the markings on the INLINE and CROSSLINE of the MVARM image board by the wall laser light, the MVARM image board is turned on and moves continuously along the INLINE direction for multiple distances. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of movement in the INLINE direction minus the electrical signal value fed back by the encoder.

[0036] The MVARM image board moves continuously along the CROSSLINE direction for multiple distances. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of movement in the ARM CROSSLINE direction minus the electrical signal value fed back by the encoder.

[0037] As a preferred option, the quality control method further includes: a fitted straight line of KVARM vertical movement amount versus encoder feedback electrical signal value and a fitted straight line of KVARM forward / backward movement amount versus encoder feedback electrical signal value. These two fitted straight lines are used as the verification benchmark for the positioning accuracy of CBCT motion control during the QA process. The specific generation method includes the following:

[0038] During the calibration of CBCT motion control positioning accuracy, with the gantry at 0°, the KVARM image board is opened, and the position of the KVARM image board at this time is defined as the initial zero point. The scale lines of the KVARM image board in the up-down and front-back directions are aligned with the laser lines emitted by the wall laser lamps. The obtained position of the KVARM image board is the isocenter position of CBCT motion control.

[0039] Based on the scales of the KVARM image board in the vertical and horizontal directions as illuminated by the wall laser, the KVARM image board is opened and continuously moved multiple distances in the vertical direction. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the vertical movement of the KVARM and the encoder feedback electrical signal values.

[0040] The KVARM image board moves continuously along the front-back direction for multiple distances. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of KVARM movement in the front-back direction minus the encoder feedback electrical signal value.

[0041] This invention discloses a quality control system and method for a medical linear accelerator, which has the following beneficial effects:

[0042] This invention can effectively reduce the time required for periodic testing of medical linear accelerators, reduce the manpower and resources required for the periodic testing process, realize multiple complete quality control plans, and generate quality control reports that can accurately and intuitively express the quality inspection results. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a structural block diagram of a quality control system provided in an embodiment of the present invention. Detailed Implementation

[0045] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Using ordinal numbers such as “first,” “second,” “third,” etc. to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects being described must have a given order in time, space, sequence, or any other way.

[0048] Furthermore, the expression "includes" is an "open-ended" expression, which only means that the corresponding component exists and should not be interpreted as excluding additional components.

[0049] To achieve the objectives of this invention, some embodiments of a quality control system and method for a medical electronic linear accelerator include: a host computer, an industrial control computer, an MLC positioning accuracy module, a gantry angle detection module, a treatment bed positioning accuracy detection module, an ARM motion control positioning accuracy module, and a CBCT motion control positioning accuracy module.

[0050] The host computer sends quality control commands to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module via the industrial control computer.

[0051] The MLC positioning accuracy module is used to acquire the real-time position of the grating blades;

[0052] The rack angle detection module is used to collect the real-time position of the rack angle;

[0053] The treatment bed positioning accuracy detection module is used to collect the real-time position of the treatment bed;

[0054] The ARM motion control positioning accuracy module is used to acquire the real-time position of the MVARM.

[0055] The CBCT motion control positioning accuracy module is used to acquire the real-time position of the KVARM.

[0056] The host computer is used to generate quality control reports based on the detection results collected by the MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, and CBCT motion control positioning accuracy module.

[0057] Among them: the host computer is equipped with the ITC system.

[0058] The I / O interface card is electrically connected to the physical button for one-key QA, and the host computer is electrically connected to the software button for one-key QA.

[0059] The industrial control computer includes an I / O interface card and a MOXA board. The I / O interface card and the MOXA board are inserted into the baseboard of the industrial control computer. The I / O interface card recognizes the operation of the one-key QA physical button or the one-key QA software button, and then sends motion commands to each motion-controlled component. The MOXA card is responsible for communication between the industrial control computer and the host computer.

[0060] Furthermore, the MLC positioning accuracy module includes two absolute encoders, which provide real-time feedback to the ITC system by identifying the real-time position of the grating blades.

[0061] Furthermore, the treatment bed positioning accuracy detection module includes six absolute encoders. The absolute encoders generate digital signals by identifying the gear positions in the three degrees of freedom of the treatment bed, and upload them to the serial port server. The ITC system can display the current position of the treatment bed by recognizing the digital signals.

[0062] Furthermore, the ARM motion control positioning accuracy module includes four absolute encoders. The absolute encoders generate digital signals by identifying the gear positions in two degrees of freedom of the MVARM and upload them to the serial port server. The ITC system can display the current position of the MVARM by recognizing the digital signals.

[0063] Furthermore, the CBCT motion control positioning accuracy module includes four absolute encoders. The absolute encoders generate digital signals by identifying the gear positions in two degrees of freedom of the KVARM and upload them to the serial port server. The ITC system can then display the current KVARM position by recognizing the digital signals.

[0064] Furthermore, the rack angle detection module includes an angle sensor. The rack angle detection module is electrically connected to an A / D acquisition card. The A / D acquisition card converts the electrical signal emitted by the angle sensor into a digital value and uploads it to the serial port server. The ITC system can display the current rack angle by recognizing the digital value uploaded by the A / D acquisition card and send real-time data to the A / D acquisition card for communication.

[0065] Furthermore, in some embodiments, five optocouplers and five relays can be used to send the gantry motion enable signal, treatment bed enable signal, CBCT enable signal, ARM enable signal, and MLC enable signal to each motion-controlled component, respectively.

[0066] In a further technical solution, the quality control system can execute multiple quality control plans sequentially according to the quality inspection process.

[0067] In a further technical solution, the error between the frame angle set by the quality control system and the actual position angle of the frame should not exceed 0.5°; otherwise, the system will determine that the frame is unqualified.

[0068] In a further technical solution, the quality control system sets the maximum deviation between the lateral, longitudinal, and vertical movement of the treatment bed and the measured values ​​to be 2mm. If the deviation exceeds 2mm, the system will determine that the deviation is unqualified.

[0069] In a further technical solution, the maximum deviation between the CROSSLINE and INLINE movement of the MVARM set by the quality control system and the measured value is 1mm. If the deviation exceeds 1mm, the system will determine that the MVARM is unqualified.

[0070] In a further technical solution, the maximum deviation between the vertical and horizontal movement of the KVARM set by the quality control system and the measured value is 1mm. If the deviation exceeds 1mm, the system will determine that the KVARM is unqualified.

[0071] In a further technical solution, the maximum deviation between the MLC blade's position set by the quality control system and the actual detected MLC blade position is 1mm. If the deviation exceeds 1mm, the system will determine that the MLC blade is unqualified.

[0072] This invention can effectively reduce the time required for periodic testing of medical linear accelerators, reduce the manpower and resources required for the periodic testing process, realize multiple complete quality control plans, and generate quality control reports that can accurately and intuitively express the quality inspection results.

[0073] This invention also discloses a quality control method for a medical linear accelerator, which utilizes the quality control system disclosed in the above embodiments and specifically includes the following:

[0074] The host computer sends a QA signal to the industrial control computer;

[0075] The industrial control computer receives the QA signal and sends quality control instructions to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module.

[0076] The MLC positioning accuracy module acquires the real-time position of the grating blades, the gantry angle detection module acquires the real-time position of the gantry angle, the treatment bed positioning accuracy detection module acquires the real-time position of the treatment bed, the ARM motion control positioning accuracy module acquires the real-time position of the MVARM, and the CBCT motion control positioning accuracy module acquires the real-time position of the KVARM.

[0077] The MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, and CBCT motion control positioning accuracy module feed the detection results back to the host computer via an industrial control computer.

[0078] The host computer generates a quality control report based on the test results.

[0079] As a preferred option, the quality control method further includes: a method for generating a fitting straight line of the position-absolute encoder electrical signal values ​​for each field of the grating MLC. This fitting straight line is used as a benchmark for verifying the positioning accuracy of the grating MLC blade motion control during the QA process. The specific generation method includes the following:

[0080] During the calibration of the positioning accuracy of the grating MLC blade motion control, with the frame at 0°, the host computer sets multiple sizes of the grating field and uses the IBA three-dimensional water tank to collect dose values ​​to determine whether the grating blade movement position is correct. At the same time, the host computer reads the electrical signal value fed back by the absolute encoder under each field of the grating MLC and sends it to the host computer. The host computer generates a fitting straight line about the position of each field of the grating MLC and the electrical signal value of the absolute encoder.

[0081] Furthermore, the quality control method also includes: a method for generating a fitted straight line between the rack angle and the electrical signal value of the angle sensor. This fitted straight line is used as the verification benchmark for the rack angle during the QA process. The specific generation method includes the following:

[0082] During the calibration of the frame angle, the frame is rotated to 0°, 45°, 90°, 135°, 180°, 225°, 270°, 315° and 360° positions respectively according to the level measuring instrument. At the same time, the electrical signal values ​​fed back by the angle sensor at each angle of the frame are read and sent to the host computer. The host computer generates a fitted straight line about the frame angle and the electrical signal value of the angle sensor.

[0083] Furthermore, the quality control methods also include: fitting a straight line between the LNG axis movement of the treatment bed and the absolute encoder electrical signal value;

[0084] The method for generating the fitting straight lines of the LAT axis movement of the treatment bed versus the absolute encoder electrical signal value and the VRT axis movement of the treatment bed versus the absolute encoder electrical signal value, these three fitting straight lines are used as the benchmark for verifying the movement of the treatment bed under three degrees of freedom during the QA process. The specific generation method includes the following:

[0085] During the calibration of the positioning accuracy of the treatment bed, the treatment bed moves 1m (back and forth) according to the cross laser light on the wall shining on the scale indicator line of the bed board. At the same time, the electrical signal value fed back by the absolute encoder during the 1m movement of the treatment bed along the LNG axis is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed LNG axis and the absolute encoder electrical signal value.

[0086] The treatment bed LAT axis (left and right) moves 10 cm, and at the same time, the electrical signal value fed back by the absolute encoder during the 10 cm movement of the treatment bed LAT axis is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed LAT axis and the electrical signal value of the absolute encoder.

[0087] The treatment bed VRT axis (lifting) moves 0.5m, and at the same time, the electrical signal value fed back by the absolute encoder during the 0.5m movement of the treatment bed VRT axis is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed VRT axis and the absolute encoder electrical signal value.

[0088] Furthermore, the quality control method also includes: the method for generating the fitting straight lines of ARMINLINE direction movement amount versus encoder feedback electrical signal value and ARMCROSSLINE direction movement amount versus encoder feedback electrical signal value. These two fitting straight lines are used as the verification benchmark for the positioning accuracy of ARM motion control during the QA process. The specific generation method includes the following:

[0089] During the calibration of the positioning accuracy of ARM motion control, with the frame at 0°, the MVARM image board is turned on, and the position of the MVARM image board at this time is defined as the initial zero point. The scale lines of the INLINE and CROSSLINE directions of the MVARM image board are aligned with the laser lines emitted by the wall laser lights. The position of the MVARM image board obtained is the isocenter position of ARM motion control.

[0090] Based on the markings on the INLINE and CROSSLINE of the MVARM image board by the wall laser light, the MVARM image board is turned on. The MVARM image board moves continuously along the INLINE direction by 2cm, 2cm, 2cm, 2cm, 2cm. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the movement amount in the INLINE direction minus the encoder feedback electrical signal value.

[0091] The MVARM image board moves continuously along the CROSSLINE direction by 2cm, 2cm, 2cm, 2cm, 2cm. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of movement in the ARMCROSSLINE direction minus the encoder feedback electrical signal value.

[0092] Furthermore, the quality control method also includes: a fitted straight line of KVARM vertical movement amount versus encoder feedback electrical signal value and a fitted straight line of KVARM forward / backward movement amount versus encoder feedback electrical signal value. These two fitted straight lines are used as the verification benchmark for the positioning accuracy of CBCT motion control during the QA process. The specific generation method includes the following:

[0093] During the calibration of CBCT motion control positioning accuracy, with the gantry at 0°, the KVARM image board is opened, and the position of the KVARM image board at this time is defined as the initial zero point. The scale lines of the KVARM image board in the up-down and front-back directions are aligned with the laser lines emitted by the wall laser lamps. The obtained position of the KVARM image board is the isocenter position of CBCT motion control.

[0094] Based on the scales of the KVARM image board in the vertical and horizontal directions as illuminated by the wall laser light, the KVARM image board is opened. The KVARM image board moves continuously in the vertical direction by 1cm, 1cm, 1cm, 1cm, 1cm. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the vertical movement of the KVARM and the electrical signal value fed back by the encoder.

[0095] The KVARM image board moves continuously a certain distance in the forward and backward direction. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line on the ratio of the KVARM's forward and backward movement to the encoder's feedback electrical signal value.

[0096] The KVARM imaging board moves continuously in the front-back direction by 1cm, 1cm, 1cm, 1cm, 1cm, while the host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of KVARM movement in the front-back direction minus the encoder feedback electrical signal value.

[0097] This invention discloses a quality control system and method for a medical linear accelerator. After the medical linear accelerator is assembled, it can perform one-click quality control on the entire system, including the gantry, treatment bed, image guidance system IVS (MVARM), cone-beam CTCBCT (KVARM), grating (MLC), and other functional modules throughout the product's entire lifecycle, both before and after delivery.

[0098] The present invention has the following beneficial effects:

[0099] 1. The quality control objectives are clear. The pre-made quality control plan issues a systematic quality control instruction for the main functions of the accelerator and conducts tests in sequence according to the quality inspection process.

[0100] 2. The quality control method is convenient, and the main functional modules of the accelerator can be tested with one click according to the pre-made quality control plan, which greatly saves the time of medical device manufacturers and doctors for regular equipment testing.

[0101] 3. The quality control effect is intuitive. The one-click QA function can generate an electronic quality control report, which includes the test results of all test items in the pre-made quality control plan.

[0102] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A quality control method for a medical linear accelerator, characterized in that, The operation is performed using a quality control system, which includes: Host computer, industrial control computer, MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, CBCT motion control positioning accuracy module; The host computer sends quality control commands to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module via the industrial control computer. The MLC positioning accuracy module is used to acquire the real-time position of the grating blades; The rack angle detection module is used to collect the real-time position of the rack angle; The treatment bed positioning accuracy detection module is used to collect the real-time position of the treatment bed; The ARM motion control positioning accuracy module is used to collect the real-time position of the MV ARM; The CBCT motion control positioning accuracy module is used to acquire the real-time position of the KV ARM; The host computer is used to generate a quality control report based on the detection results collected by the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module. The quality control method specifically includes the following: The host computer sends a QA signal to the industrial control computer; The industrial control computer receives the QA signal and sends quality control instructions to the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module. The MLC positioning accuracy module acquires the real-time position of the grating blades, the gantry angle detection module acquires the real-time position of the gantry angle, the treatment bed positioning accuracy detection module acquires the real-time position of the treatment bed, the ARM motion control positioning accuracy module acquires the real-time position of the MVARM, and the CBCT motion control positioning accuracy module acquires the real-time position of the KV ARM. The MLC positioning accuracy module, gantry angle detection module, treatment bed positioning accuracy detection module, ARM motion control positioning accuracy module, and CBCT motion control positioning accuracy module feed the detection results back to the host computer via an industrial control computer. The host computer generates a quality control report based on the test results; The quality control method also includes: a method for generating a fitted straight line of position-absolute encoder electrical signal values ​​for each field of the grating MLC. This fitted straight line is used as a benchmark for verifying the positioning accuracy of the grating MLC blade motion control during the QA process. The specific generation method includes the following: During the calibration of the positioning accuracy of the grating MLC blade motion control, with the frame at 0°, the host computer sets multiple sizes of the grating field and uses the IBA three-dimensional water tank to collect dose values ​​to determine whether the grating blade movement position is correct. At the same time, the host computer reads the electrical signal value fed back by the absolute encoder under each field of the grating MLC and sends it to the host computer. The host computer generates a fitting straight line about the position of each field of the grating MLC and the electrical signal value of the absolute encoder. and / or; The quality control method further includes: a method for generating a fitted straight line between the rack angle and the electrical signal value of the angle sensor. This fitted straight line is used as the verification benchmark for the rack angle during the QA process. The specific generation method includes the following: During the calibration of the rack angle, the rack is rotated to multiple different angle positions according to the level measuring instrument. At the same time, the electrical signal values ​​fed back by the angle sensor at each angle of the rack are read and sent to the host computer. The host computer generates a fitted straight line about the rack angle and the angle sensor electrical signal value. and / or; The quality control method further includes: a method for generating the fitting straight lines of the LNG axis movement of the treatment bed and the absolute encoder electrical signal value, the fitting straight lines of the LAT axis movement of the treatment bed and the absolute encoder electrical signal value, and the fitting straight lines of the VRT axis movement of the treatment bed and the absolute encoder electrical signal value. These three fitting straight lines are used as the benchmark for verifying the movement of the treatment bed under three degrees of freedom during the QA process. The specific generation method includes the following: During the calibration of the positioning accuracy of the treatment bed, the LNG axis of the treatment bed moves a first distance according to the cross laser light on the wall shining on the scale indicator line of the bed board. At the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed moving the first distance along the LNG axis is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the LNG axis of the treatment bed and the absolute encoder electrical signal value. The treatment bed LAT axis moves a second distance, and at the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed LAT axis moving this second distance is read and sent to the host computer. The host computer generates a fitted straight line about the treatment bed LAT axis movement amount - absolute encoder electrical signal value. The treatment bed VRT axis moves a third distance, and at the same time, the electrical signal value fed back by the absolute encoder during the process of the treatment bed VRT axis moving this third distance is read and sent to the host computer. The host computer generates a fitted straight line about the amount of movement of the treatment bed VRT axis and the absolute encoder electrical signal value. and / or; The quality control method further includes: a method for generating a fitted straight line between the ARM INLINE direction movement amount and the encoder feedback electrical signal value, and a method for generating a fitted straight line between the ARM CROSSLINE direction movement amount and the encoder feedback electrical signal value. The two fitted straight lines are used as the verification benchmark for the positioning accuracy of ARM motion control during the QA process. The specific generation method includes the following: During the calibration of the positioning accuracy of ARM motion control, with the frame at 0°, the MV ARM image board is turned on, and the position of the MV ARM image board at this time is defined as the initial zero point. The scale lines in the INLINE and CROSSLINE directions of the MV ARM image board are aligned with the laser lines emitted by the wall laser lights. The position of the MV ARM image board obtained is the isocenter position of ARM motion control. Based on the scales of the INLINE and CROSSLINE directions of the wall laser light shining on the MV ARM image board, the MV ARM image board is turned on. The MV ARM image board moves continuously along the INLINE direction for multiple distances. The host computer records the corresponding electrical signal value fed back by the absolute encoder and generates a fitted straight line about the amount of movement in the ARM INLINE direction minus the electrical signal value fed back by the encoder. The MV ARM image board moves continuously along the CROSSLINE direction for multiple distances. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of movement in the ARM CROSSLINE direction minus the electrical signal value fed back by the encoder. The quality control method further includes: a fitted straight line of KVARM vertical movement amount minus encoder feedback electrical signal value and a fitted straight line of KVARM forward / backward movement amount minus encoder feedback electrical signal value. These two fitted straight lines serve as the verification benchmark for the CBCT motion control positioning accuracy during the QA process. The specific generation method includes the following: During the calibration of CBCT motion control positioning accuracy, with the gantry at 0°, the KV ARM image board is opened, and the position of the KV ARM image board at this time is defined as the initial zero point. The scale lines of the KV ARM image board in the up-down and back-forward directions are aligned with the laser lines emitted by the wall laser lamps. The obtained position of the KV ARM image board is the isocenter position of CBCT motion control. Based on the scales of the KV ARM image board in the vertical and horizontal directions as illuminated by the wall laser light, the KV ARM image board is opened and continuously moved multiple distances in the vertical direction. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the vertical movement of the KV ARM and the encoder feedback electrical signal values. The KV ARM image board moves continuously along the front-back direction for multiple distances. The host computer records the corresponding electrical signal values ​​fed back by the absolute encoder and generates a fitted straight line about the amount of KV ARM movement in the front-back direction minus the encoder feedback electrical signal value.

2. The quality control method according to claim 1, characterized in that, The industrial control computer and / or host computer are electrically connected to the one-key QA button.

3. The quality control method according to claim 1, characterized in that, The MLC positioning accuracy module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module, and the CBCT motion control positioning accuracy module each include: one or more absolute encoders; the gantry angle detection module includes: an angle sensor.

4. The quality control method according to claim 1, characterized in that, The host computer is equipped with an ITC system.

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