阅读说明：本技术 一种放射治疗中出射剂量实时监测装置及其控制方法 (Real-time emergent dose monitoring device in radiotherapy and control method thereof ) 是由 张书旭 罗松桂 林生趣 余辉 张国前 张全彬 王锐濠 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种放射治疗中出射剂量实时监测装置及其控制方法,所述所述监测装置包括水平底座、T型立架、旋转臂、二维平面探测器、适配器和PC终端；所述T型立架固定在所述水平底座上,所述旋转臂的第一端固定在所述T型立架上,所述旋转臂的第二端装配所述适配器,所述二维平面探测器固定在所述适配器上,所述PC终端与所述二维平面探测器连接；本发明能够使探测平面最大限度靠近患者体表,缩小了患者体表与探测平面的间距,进而能够减小由于患者体表与探测平面间距导致的剂量误差；同时,能够使得PC终端获取二维平面探测器的探测结果,并根据探测结果计算出放射治疗过程中射线穿过患者身体后的出射剂量二维分布。(The invention discloses a real-time monitoring device for emergent dose in radiotherapy and a control method thereof, wherein the monitoring device comprises a horizontal base, a T-shaped vertical frame, a rotating arm, a two-dimensional plane detector, an adapter and a PC terminal; the T-shaped stand is fixed on the horizontal base, a first end of the rotating arm is fixed on the T-shaped stand, a second end of the rotating arm is assembled with the adapter, the two-dimensional plane detector is fixed on the adapter, and the PC terminal is connected with the two-dimensional plane detector; the invention can enable the detection plane to be close to the body surface of the patient to the maximum extent, reduce the distance between the body surface of the patient and the detection plane and further reduce the dosage error caused by the distance between the body surface of the patient and the detection plane; meanwhile, the PC terminal can obtain the detection result of the two-dimensional plane detector, and the two-dimensional distribution of the emergent dose of the ray passing through the body of the patient in the radiotherapy process is calculated according to the detection result.)

1. An emergent dose real-time monitoring device in radiotherapy is characterized by comprising a horizontal base, a T-shaped vertical frame, a rotating arm, a two-dimensional plane detector, an adapter and a PC terminal; the T-shaped stand is fixed on the horizontal base, a first end of the rotating arm is fixed on the T-shaped stand, a second end of the rotating arm is assembled with the adapter, the two-dimensional plane detector is fixed on the adapter, and the PC terminal is connected with the two-dimensional plane detector;

the two-dimensional plane detector is used for monitoring the radiation field at any irradiation angle in the radiotherapy in real time;

and the PC terminal receives the monitoring result of the two-dimensional plane detector and calculates the two-dimensional distribution of the emergent dose of the ray passing through the body of the patient.

2. The real-time emergent dose monitoring device for radiotherapy according to claim 1, wherein:

the horizontal base is provided with a first sliding groove, a first limiting plate and a first cover plate, the first sliding groove, the first limiting plate and the first cover plate jointly form a first fixing device, and the first fixing device is used for fixing the T-shaped vertical frame;

the horizontal base is rectangular and is also provided with a plurality of base horizontal adjusting knobs, a plurality of horizontal indicators and a plurality of fastening screws; the base horizontal adjusting knob is used for carrying out horizontal calibration on the horizontal base, and the horizontal indicator is used for displaying whether the horizontal base is calibrated or not.

3. The real-time emergent dose monitoring device for radiotherapy according to claim 2, wherein:

the T-shaped stand comprises a horizontal sliding plate and a vertical supporting plate, the vertical supporting plate is vertically fixed on the horizontal sliding plate, and the horizontal sliding plate is fixed in the first fixing device; a second sliding groove, a second limiting plate and a second cover plate are arranged on the vertical supporting plate, the second sliding groove, the second limiting plate and the second cover plate jointly form a second fixing device, the second fixing device is used for fixing the rotating arm, and the second cover plate is used for limiting the rotating arm to turn over;

the vertical supporting plate is also provided with an adjusting screw rod, a locking knob and an angle indicator; the adjusting screw rod is used for performing ascending adjustment and descending adjustment on the rotating arm; the locking knob is used for positioning the rotating arm, and the angle indicator is used for indicating the rotating angle of the rotating arm.

4. The real-time emergent dose monitoring device for radiotherapy according to claim 1, wherein:

a second end of the rotating arm is provided with a third sliding groove, and the adapter is assembled on the third sliding groove;

the swinging boom includes swinging boom horizontal pole, rotation axis, rotatory pointer, slip square and rotation angle calibrated scale set up the first end of swinging boom, rotatory pointer with the rotation axis is connected, rotatory pointer passes the swinging boom horizontal pole with the rotation angle calibrated scale is connected, the slip square with the rotation axis is connected.

5. The real-time emergent dose monitoring device for radiotherapy according to claim 4, wherein the rotating arm is provided with a numerical control rotation driving device, and the numerical control rotation driving device is installed at the rotating shaft;

the numerical control rotation driving device is used for remotely controlling the rotation angle of the rotating arm so as to drive the rotating arm to work.

6. The device for monitoring the emergent dose in radiotherapy in real time as claimed in claim 1, wherein the rotating arm is provided with a warning switch, and when the rotating arm touches, the warning switch controls the rotating arm to stop working and send out a corresponding warning prompt.

7. The real-time emergent dose monitoring device for radiotherapy according to claim 1, wherein the adaptor comprises a frame and a telescopic rod, the telescopic rod is connected with the frame, a mounting opening, a fixing knob and an adjusting knob are arranged in the frame, and the two-dimensional plane detector is mounted on the mounting opening; the fixing knob is used for fixing the two-dimensional plane detector, and the adjusting knob is used for adjusting the position, the horizontal angle and the vertical angle of the two-dimensional plane detector.

8. The method for controlling a monitoring device according to any one of claims 1 to 7, comprising:

controlling the rotary arm to rotate in the radiotherapy so that the plane of the two-dimensional plane detector is perpendicular to the central axis of the ray;

determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in real time in the radiotherapy;

and calculating the two-dimensional distribution of emergent dose of the ray passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

9. The control method of the monitoring device according to claim 9, characterized by further comprising:

carrying out real-time comparative analysis on the emergent dose two-dimensional distribution and the expected emergent dose distribution;

and determining whether the emergent dose in the radiation treatment meets the expected requirement or not according to the comparison and analysis result.

10. The control method of a monitoring device according to claim 5, comprising:

the rotation of the rotating arm is controlled by the numerical control rotation driving device, so that the plane of the two-dimensional plane detector is perpendicular to the central axis of the ray;

determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in real time in the radiotherapy;

and calculating the two-dimensional distribution of emergent dose of the ray passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

Technical Field

The invention relates to the technical field of tumor radiotherapy emergent dose monitoring, in particular to a real-time emergent dose monitoring device in radiotherapy and a control method thereof.

Background

In the existing tumor radiotherapy process, a radiotherapy plan is transplanted into a phantom for plan verification before treatment, which only directly reflects the difference between the dose Distribution (DQA) expected by the radiotherapy plan in the phantom and the dose distribution (DTest) measured in the phantom, and does not reflect the difference between the Dose (DTPS) expected by a patient and the Dose (DRT) actually irradiated during treatment, so that many studies show that the significance of the phantom verification mode before treatment is very limited, and even if the dose Distribution (DQA) expected by the radiotherapy plan in the phantom and the dose distribution (DTest) measured in the phantom are completely consistent or completely reach the standard, the Dose (DRT) obtained by the patient during subsequent actual treatment cannot be consistent or consistent with the Dose (DTPS) expected by the patient.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a real-time emergent dose monitoring device in radiotherapy and a control method thereof.

The technical scheme adopted by the invention is as follows:

on one hand, the embodiment of the invention comprises a real-time emergent dose monitoring device in radiotherapy, which comprises a horizontal base, a T-shaped vertical frame, a rotating arm, a two-dimensional plane detector, an adapter and a PC terminal; the T-shaped stand is fixed on the horizontal base, a first end of the rotating arm is fixed on the T-shaped stand, a second end of the rotating arm is assembled with the adapter, the two-dimensional plane detector is fixed on the adapter, and the PC terminal is connected with the two-dimensional plane detector;

the two-dimensional plane detector is used for monitoring the radiation field at any irradiation angle in the radiotherapy in real time;

and the PC terminal receives the monitoring result of the two-dimensional plane detector and calculates the two-dimensional distribution of the emergent dose of the ray passing through the body of the patient.

Further, the horizontal base is provided with a first sliding groove, a first limiting plate and a first cover plate, the first sliding groove, the first limiting plate and the first cover plate jointly form a first fixing device, and the first fixing device is used for fixing the T-shaped vertical frame;

the horizontal base is rectangular and is also provided with a plurality of base horizontal adjusting knobs, a plurality of horizontal indicators and a plurality of fastening screws; the base horizontal adjusting knob is used for carrying out horizontal calibration on the horizontal base, and the horizontal indicator is used for displaying whether the horizontal base is calibrated or not.

Further, the T-shaped stand comprises a horizontal sliding plate and a vertical supporting plate, the vertical supporting plate is vertically fixed on the horizontal sliding plate, and the horizontal sliding plate is fixed in the first fixing device; a second sliding groove, a second limiting plate and a second cover plate are arranged on the vertical supporting plate, the second sliding groove, the second limiting plate and the second cover plate jointly form a second fixing device, the second fixing device is used for fixing the rotating arm, and the second cover plate is used for limiting the rotating arm to turn over;

the vertical supporting plate is also provided with an adjusting screw rod, a locking knob and an angle indicator; the adjusting screw rod is used for performing ascending adjustment and descending adjustment on the rotating arm; the locking knob is used for positioning the rotating arm, and the angle indicator is used for indicating the rotating angle of the rotating arm.

Furthermore, a third sliding groove is formed in the second end of the rotating arm, and the adapter is assembled on the third sliding groove;

the swinging boom includes swinging boom horizontal pole, rotation axis, rotatory pointer, slip square and rotation angle calibrated scale set up the first end of swinging boom, rotatory pointer with the rotation axis is connected, rotatory pointer passes the swinging boom horizontal pole with the rotation angle calibrated scale is connected, the slip square with the rotation axis is connected.

Furthermore, the rotating arm is provided with a numerical control rotation driving device, and the numerical control rotation driving device is installed at the rotating shaft;

the numerical control rotation driving device is used for remotely controlling the rotation angle of the rotating arm so as to drive the rotating arm to work.

Further, the swinging boom is equipped with the warning switch, works as when the touching takes place for the swinging boom, warning on-off control the swinging boom stop work to send corresponding warning and remind.

Furthermore, the adapter comprises a frame and a telescopic rod, the telescopic rod is connected with the frame, a mounting hole, a fixing knob and an adjusting knob are arranged in the frame, and the two-dimensional plane detector is mounted on the mounting hole; the fixing knob is used for fixing the two-dimensional plane detector, and the adjusting knob is used for adjusting the position, the horizontal angle and the vertical angle of the two-dimensional plane detector.

In another aspect, an embodiment of the present invention includes a method for controlling an emergent dose real-time monitoring device in radiotherapy, including:

controlling the rotary arm to rotate in the radiotherapy so that the plane of the two-dimensional plane detector is perpendicular to the central axis of the ray;

determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in real time in the radiotherapy;

and calculating the two-dimensional distribution of emergent dose of the ray passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

Further, the control method further includes:

carrying out real-time comparative analysis on the emergent dose two-dimensional distribution and the expected emergent dose distribution;

and determining whether the emergent dose in the radiation treatment meets the expected requirement or not according to the comparison and analysis result.

In another aspect, the present invention includes a method for controlling a real-time monitoring device of an emitted dose in radiotherapy, including:

the rotation of the rotating arm is controlled by the numerical control rotation driving device, so that the plane of the two-dimensional plane detector is perpendicular to the central axis of the ray;

determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in real time in the radiotherapy;

and calculating the two-dimensional distribution of emergent dose of the ray passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

The invention has the beneficial effects that:

according to the invention, by arranging the rotating arm and the two-dimensional plane detector, the detection plane can be close to the body surface of the patient to the maximum extent by rotating the rotating arm, so that the distance between the body surface of the patient and the detection plane is reduced, and further, the dosage error caused by the distance between the body surface of the patient and the detection plane can be reduced; the invention has simple structure, convenient installation and disassembly and simple operation; meanwhile, the PC terminal is connected with the two-dimensional plane detector, so that the PC terminal can obtain the detection result of the two-dimensional plane detector, the two-dimensional distribution of the emergent dose of the rays passing through the body of the patient in the radiotherapy process can be calculated according to the detection result, and the accuracy of the radiotherapy process can be effectively evaluated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a monitoring device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a horizontal base according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a T-shaped stand according to an embodiment of the present invention;

FIG. 4 is a side view of a rotary arm structure according to an embodiment of the present invention;

FIG. 5 is another side view of a rotary arm structure according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an adapter according to an embodiment of the present invention.

FIG. 7 is a flow chart illustrating steps of a method for controlling the monitoring device according to the present invention;

fig. 8 is a flowchart illustrating another step of the control method for implementing the monitoring device according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The embodiments of the present application will be further explained with reference to the drawings.

Referring to fig. 1, the embodiment of the invention includes a real-time monitoring device for emergent dose in radiotherapy, which is characterized by comprising a horizontal base 1, a T-shaped stand 2, a rotating arm 3, a two-dimensional plane detector 4, an adapter 5 and a PC terminal 6; the T-shaped stand 2 is fixed on the horizontal base 1, a first end of the rotating arm 3 is fixed on the T-shaped stand 2, a second end of the rotating arm 3 is assembled with the adapter 5, the two-dimensional plane detector 4 is fixed on the adapter 5, and the PC terminal 6 is connected with the two-dimensional plane detector 4;

the two-dimensional plane detector 4 is used for monitoring the radiation field at any irradiation angle in the radiotherapy in real time;

and the PC terminal 6 receives the monitoring result of the two-dimensional plane detector 4 and calculates the two-dimensional distribution of the emergent dose of the ray passing through the body of the patient.

In the embodiment, the two-dimensional plane detector can be controlled to be close to the body surface of the appointed part of the patient by rotating the rotating arm, so that the detection plane can be close to the body surface of the patient to the maximum extent, the distance between the body surface of the patient and the detection plane is reduced, and further, the dosage error caused by the distance between the body surface of the patient and the detection plane can be reduced; the invention has simple structure, convenient installation and disassembly and simple operation.

In the embodiment, the PC terminal is connected with the two-dimensional plane detector, so that the PC terminal can obtain the detection result of the two-dimensional plane detector, and the two-dimensional distribution of the emergent dose of the ray passing through the body of the patient in the radiotherapy process is calculated according to the detection result; in this embodiment, after the PC terminal obtains the two-dimensional distribution of the emitted dose in the radiotherapy process, the two-dimensional distribution of the emitted dose may be further compared and analyzed with an expected emitted dose distribution in real time; determining whether the emergent dose meets the expected requirement in the radiotherapy according to the comparison and analysis result; further, the accuracy of the radiotherapy process can be effectively evaluated; specifically, if the relative difference between the two meets certain professional evaluation criteria, for example, the relative difference between the two does not exceed 3 mm/+/-3%; or the standard compliance rate is more than 95 percent, which indicates that the accuracy of the irradiated dose in the body of the patient in the radiotherapy process meets the expected requirement.

Referring to fig. 2, the horizontal base 1 is provided with a first sliding groove 101, a first limiting plate 102 and a first cover plate 103, the first sliding groove 101, the first limiting plate 102 and the first cover plate 103 together form a first fixing device, and the first fixing device fixes the T-shaped stand 2.

The horizontal base 1 is rectangular, and the horizontal base 1 is further provided with a plurality of base horizontal adjusting knobs 104 and a plurality of horizontal indicators 105.

Referring to fig. 2, in the present embodiment, the horizontal base 1 includes 4 horizontal adjustment knobs, 104-1, 104-2, 104-3 and 104-4 in fig. 2; 3 level indicators, 105-1, 105-2 and 105-3, respectively; the first sliding groove 101 is a T-shaped vertical frame sliding groove, and the upper side and the lower side of the first sliding groove 101 are respectively provided with a first limiting plate 102-1 and a first limiting plate 102-2; the left side and the right side of the first sliding groove 101 are respectively provided with a first cover plate, which is respectively 103-1 and 103-2; the first sliding groove 101, the first limit plate 102 and the first cover plate 103 together form a first fixing device, and the first fixing device is used for preventing the T-shaped stand 2 from falling off and accurately positioning; in addition, the horizontal base 1 is provided with a fixing bottom plate and fastening screws for adapting to treatment beds of different types of radiotherapy equipment (such as medical accelerators and the like), wherein the fastening screws are shown as 106-1 and 106-2 in figure 2.

In this embodiment, the base horizontal adjustment knob is used to perform horizontal calibration on the horizontal base, and the horizontal indicator is used to display whether the horizontal base is calibrated completely

Referring to fig. 3, the T-shaped stand 2 includes a horizontal sliding plate 201 and a vertical supporting plate 202, the vertical supporting plate 202 is vertically fixed on the horizontal sliding plate 201, and the horizontal sliding plate 201 is fixed in the first fixing device; a second sliding groove, a second limiting plate and a second cover plate are arranged on the vertical supporting plate 202, the second sliding groove, the second limiting plate and the second cover plate jointly form a second fixing device 202-1, and the rotating arm 3 is fixed by the second fixing device; the vertical support plate 202 is also provided with an adjusting screw 202-2, a locking knob 202-3 and an angle indicator 202-4.

In this embodiment, the second cover plate is used for limiting the rotating arm from overturning; the adjusting screw rod is used for performing ascending adjustment and descending adjustment on the rotating arm; the locking knob is used for positioning the rotating arm, and the angle indicator is used for indicating the rotating angle of the rotating arm.

Referring to fig. 4 and 5, a second end of the rotating arm 3 is provided with a third sliding groove 301, and the adapter 5 is assembled on the third sliding groove; the swinging boom 3 includes swinging boom cross bar 302, rotation axis 303, rotatory pointer 304, slip square 305 and rotation angle dial 306 set up the first end of swinging boom 3, rotatory pointer 304 with the rotation axis 303 is connected, rotatory pointer 304 passes swinging boom cross bar 302 with rotation angle dial 306 is connected, slip square 305 with the rotation axis 303 is connected.

In the embodiment, the rotating arm is fixed on the T-shaped vertical frame, the rotating pointer used for indicating the center of the rotating shaft of the rotating arm is arranged on the rotating arm, and the rotating pointer at the center of the rotating shaft is coincided with the rotating central shaft of the radiotherapy equipment rack by accurately adjusting the position of the T-shaped vertical frame in the horizontal direction (the left direction and the right direction) and accurately adjusting the height through the adjusting screw rod on the T-shaped vertical frame, so that the planar rotating central shaft of the two-dimensional planar detector is coincided with the rotating central shaft of the radiotherapy equipment rack; during measurement, the rotating arm is rotated, so that the plane of the detector is always perpendicular to the central axis of the ray, and the central axis of the ray always penetrates through the geometric center of the detection plane.

As an alternative embodiment, the rotating arm 3 is provided with a numerically controlled rotary drive 307 mounted at the rotating shaft.

In this embodiment, still be supporting on the swinging boom and have numerical control rotary driving device, through numerical control rotary driving device, can realize remote control drive swinging boom, convenient operation is used. For example, when multi-gantry angle irradiation is performed, an operator can accurately control the angle of the rotating arm only in a control room without entering a treatment room, so that the plane of the two-dimensional plane detector is always perpendicular to the central axis of the ray, and the central axis of the ray always passes through the geometric center of the detection plane.

Referring to fig. 6, the adapter 5 includes a frame 501 and a telescopic rod 502, the telescopic rod 501 is connected to the frame 502, a mounting opening 501-1, a fixing knob 501-2 and an adjusting knob 501-3 are provided in the frame 501, and the two-dimensional plane detector 4 is mounted on the mounting opening 501-1.

In this embodiment, the mounting port is used for mounting the two-dimensional plane detector; the fixing knob is used for fixing the two-dimensional plane detector, and the adjusting knob is used for adjusting the position, the horizontal angle and the vertical angle of the two-dimensional plane detector.

In summary, the real-time monitoring device for the emergent dose in the radiotherapy described in this embodiment has the following advantages:

according to the invention, by arranging the rotating arm and the two-dimensional plane detector, the detection plane can be close to the body surface of the patient to the maximum extent by rotating the rotating arm, so that the distance between the body surface of the patient and the detection plane is reduced, and further, the dosage error caused by the distance between the body surface of the patient and the detection plane can be reduced; the invention has simple structure, convenient installation and disassembly and simple operation; meanwhile, the PC terminal is connected with the two-dimensional plane detector, so that the PC terminal can obtain the detection result of the two-dimensional plane detector, and the two-dimensional distribution of the emergent dose of the rays passing through the body of the patient in the radiotherapy process can be calculated according to the detection result, and further the accuracy of the radiotherapy process can be effectively evaluated; by arranging the numerical control rotary driving device, the rotary arm can be driven by remote control in a long distance, and the operation and the use are convenient.

Referring to fig. 7, an embodiment of the present invention further provides a control method for an emergent dose real-time monitoring device in radiotherapy, where the monitoring device is the monitoring device shown in fig. 1, and the control method includes, but is not limited to, the following steps:

s1, controlling the rotating arm to rotate in the radiotherapy to enable the plane of the two-dimensional plane detector to be perpendicular to a central axis of a ray;

s2, determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

s3, controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in real time in the radiotherapy;

and S4, calculating two-dimensional distribution of emergent doses of rays passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

In this embodiment, after the monitoring device shown in fig. 1 is assembled, the rotation of the rotating arm is controlled, so that the plane where the two-dimensional plane detector is located can be accurately controlled to be perpendicular to the central axis of the ray, and then whether the central axis of the ray passes through the geometric center of the plane where the two-dimensional plane detector is located is further confirmed; if yes, controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in the radiotherapy in real time; because the two-dimensional plane detector is connected with the PC terminal, the PC terminal can receive the detection result of the two-dimensional plane detector and calculate the two-dimensional distribution of the emergent dose of the emergent ray passing through the body of the patient according to the detection result.

As an optional implementation, the control method further includes:

s5, carrying out real-time comparative analysis on the emergent dose two-dimensional distribution and the expected emergent dose distribution;

and S6, determining whether the emergent dose meets the expected requirement in the radiotherapy according to the comparison and analysis result.

In this embodiment, after the PC terminal obtains the two-dimensional distribution of the emitted dose in the radiotherapy process, the two-dimensional distribution of the emitted dose may be further compared and analyzed with an expected emitted dose distribution in real time; determining whether the emergent dose meets the expected requirement in the radiotherapy according to the comparison and analysis result; further, the accuracy of the radiotherapy process can be effectively evaluated; specifically, if the relative difference between the two meets certain professional evaluation criteria, for example, the relative difference between the two does not exceed 3 mm/+/-3%; or the standard compliance rate is more than 95 percent, which indicates that the accuracy of the irradiated dose in the body of the patient in the radiotherapy process meets the expected requirement.

The control method of the emergent dose real-time monitoring device in the radiotherapy provided by the embodiment of the invention has the following technical effects:

according to the embodiment of the invention, the irradiated dose of the patient is evaluated by actually measuring the emergent dose of the rays penetrating through the body of the patient in the radiotherapy process, so that the accuracy of radiotherapy execution can be more fully reflected; compared with the verification of a phantom plan before treatment, the method can evaluate the execution result of the radiotherapy plan more directly, objectively and accurately.

Referring to fig. 8, an embodiment of the present invention further provides a control method of an emergent dose real-time monitoring device in radiation therapy, including but not limited to the following steps:

p1, controlling the rotation of the rotating arm through the numerical control rotation driving device to enable the plane where the two-dimensional plane detector is located to be perpendicular to a ray central axis;

p2, determining that the central axis of the ray passes through the center of the plane geometry of the two-dimensional plane detector;

p3, controlling the two-dimensional plane detector to monitor the radiation field at any irradiation angle in the radiotherapy in real time;

and P4, calculating the two-dimensional distribution of emergent doses of rays passing through the body of the patient according to the monitoring result of the two-dimensional plane detector.

In this embodiment, because the digital control rotary driving device is arranged on the rotary arm in the monitoring device, the rotary arm can be controlled to rotate by the digital control rotary driving device, so that the rotary arm can be driven by a remote controller, and the operation and use are convenient. For example, when multi-gantry angle irradiation is performed, an operator can accurately control the angle of the rotating arm only in a control room without entering a treatment room, so that the plane of the two-dimensional plane detector is always perpendicular to the central axis of the ray, and the central axis of the ray always passes through the geometric center of the detection plane.

The control method of the emergent dose real-time monitoring device in the radiotherapy provided by the embodiment of the invention has the following technical effects:

according to the embodiment of the invention, the rotation of the rotating arm is controlled by the numerical control rotation driving device, so that the monitoring device can be remotely controlled to monitor the radiation field at any irradiation angle in radiotherapy in real time; so that medical staff can carry out radiotherapy without entering a treatment room; convenient operation and higher safety.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.