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Measuring device for measuring rotary output dose of spiral fault treatment device

A technology for a treatment device and a measuring device, which is applied in the direction of a measuring device, radiation measurement, dosimeter, etc., can solve the problem that the measurement accuracy of the rotating output dose is not high, and it cannot be used to measure the change index of the angle position of the moving treatment beam of the linear accelerator, etc. problems, to achieve the effect of increasing universality, solving waste of resources and saving costs

Pending Publication Date: 2022-04-12
ZHEJIANG HANGKANG TESTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the movable part of the device cannot be stabilized at a specific position, the measurement accuracy of the rotational output dose of the helical tomotherapy device is not high during the quality control inspection of the helical tomotherapy device, and it cannot be used to measure the moving treatment beam of the linear accelerator. , with the change of the angular position of the equipment and the change index of the random frame rotation

Method used

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  • Measuring device for measuring rotary output dose of spiral fault treatment device
  • Measuring device for measuring rotary output dose of spiral fault treatment device
  • Measuring device for measuring rotary output dose of spiral fault treatment device

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0064] Experimental example 1 Detecting the rotational output dose of the helical tomotherapy device

[0065] The experimental method needs to use the measuring device of the present invention and the existing Tomo Electrometer phantom to detect the rotational output dose of the helical tomotherapy device. The dosimeter selected in the present invention is a conventional dosimeter PTW / TW30013 (0.06cc), and the TomoElectrometer phantom The body dosimeter is Tomo Electrometer

[0066] / Standard Imaging A1SL (0.053cc), the detection condition is SAD=85cm, and the planned dose is 150.8cGy.

[0067] The results are shown in Table 1

[0068] Table 1 Comparison of the measurement device of the present invention with the prior art phantom quality control detection

[0069] Measuring device of the present invention Tomo Electrometer phantom 1 151.8cGy 155.0cGy 2 151.5cGy 155.8cGy 3 151.6cGy 156.4cGy 4 152.5cGy 154.3 cGy 5 150.9cGy ...

experiment example 2

[0071] Experimental example 2 Testing the stability index of the linear accelerator's moving therapeutic beam

[0072] The experimental method needs to use the measuring device of the present invention to detect the stability index of the moving treatment beam of the linear accelerator. The dosimeter selected in the present invention is a conventional dosimeter PTW / TW30013 (0.06cc), and the planned dose is 200cGy.

[0073] The results are shown in Table 2

[0074] Table 2 The measured value of the measuring device of the present invention is compared with the planned dose value

[0075] Measuring device measurement value of the present invention plan value 1 201.0cGy 200cGy 2 200.8cGy 200cGy 3 200.4 cGy 200cGy 4 200.3cGy 200cGy 5 200.7cGy 200cGy

[0076] As can be seen from Table 2, the deviation between the measured value of the measuring device of the present invention and the planned dose value is within ±1.0%, indi...

experiment example 3

[0077] Experimental Example 3 Detect the change index with the angular position of the equipment

[0078] The experimental method needs to use the measuring device of the present invention to detect the change index of the angular position of the equipment. The selected equipment is a linear accelerator. The dosimeter selected in the present invention is a conventional dosimeter PTW / TW30013 (0.06cc), and the planned dose is 200cGy.

[0079] The results are shown in Table 3

[0080] Table 3 The measured value of the measuring device of the present invention is compared with the planned dose value

[0081] device angle Measuring device measurement value of the present invention plan value 1 0° 201.6cGy 200cGy 2 90° 200.9 cGy 200cGy 3 270° 201.2 cGy 200cGy

[0082] As can be seen from Table 3, under different angles of the equipment, the deviation of the measured value of the measuring device of the present invention and the result ...

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Abstract

The invention discloses a device for measuring the rotary output dose of a spiral fault treatment device, and the device comprises a die body and a first plunger, a first plunger groove is disposed in the axial direction of the die body, the first plunger groove is disposed at the axis of the die body, and the first plunger is disposed in the first plunger groove and coincides with the first plunger groove. An electrometer slot is arranged in the middle of the first plunger. Due to the fact that the size of the electrometer slot can be designed to be the size of an ionization chamber of a conventional electrometer, universality is improved. Secondly, when the device is used for measuring the rotary output dose of the spiral fault treatment device, the electrometer is located below the axis of the die body, and after the first plunger is taken out and inserted upside down, and the first plunger is inserted into the first plunger groove, the electrometer slot and the die body are coaxial; the measuring device is beneficial for measuring the change index of the linearly moving treatment beam along with the change of the equipment angle position and the rotation of the frame.

Description

technical field [0001] The invention relates to the technical field of helical tomotherapy, in particular to a measurement device for the rotational output dose of a helical tomotherapy device and the moving treatment beam of a linear accelerator, the change with the angular position of the equipment and the change with the rotation of the rack. Background technique [0002] Helical tomotherapy is a cancer radiation therapy method based on the helical tomotherapy system TOMO equipment, and it is one of the most advanced tumor radiation therapy technologies today. The helical tomotherapy device integrates IMRT (intensity-modulated radiation therapy), IGRT (image-guided intensity-modulated radiation therapy), and DGRT (dose-guided intensity-modulated radiation therapy). Its original design makes linear accelerator and spiral CT The perfect combination breaks through many limitations of traditional accelerators, and irradiates tumors with 360-degree focused tomography under the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/14G01T1/29
Inventor 许凯陈荣民王路杰伍虎
Owner ZHEJIANG HANGKANG TESTING TECH CO LTD
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