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Gyro knife dosage distribution verification method

A technology of dose distribution and verification method, applied in radiation therapy, X-ray/γ-ray/particle irradiation therapy, treatment, etc., to achieve the effect of simple operation, intuitive evaluation results, and great promotion value

Inactive Publication Date: 2016-04-27
严思奇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, gyro knife manufacturers have only developed limited quality control techniques for medical clinical applications
For example, the crystal ball phantom verification isocentric method, the output of the verification method can only show the focus deviation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below with reference to examples.

[0019] A gyro knife dose distribution verification method, comprising the following steps:

[0020] Step 1: Use the crystal glass ball phantom that comes with the gyro-knife directional radiosurgery system to simulate the patient, fix it on the head of the treatment bed, and perform a CT scan with a slice thickness of 2.5mm;

[0021] Step 2: Use the gyro knife directional radiosurgery system to preset the treatment plan for the CT scan results obtained in step 1, insert the film into the slot of the crystal glass ball phantom, and perform irradiation on the gyro knife;

[0022] Step 3: use the photosensitive film to develop the result of the irradiation in Step 2 to obtain the actual dose distribution image A;

[0023] Step 4: use the gyro knife directional radiosurgery system to obtain the theoretical dose distribution image B of the preset treatment plan;

[0024] Step 5: Extract the...

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PUM

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Abstract

The invention discloses a gyro knife dosage distribution verification method, comprising steps of using a crystal glass ball body as a simulation patient, executing CT scanning and treatment planning design, inserting a development-free film on the ball die, executing treatment according to the treatment plan in order to obtain the physic dosage distribution graph, and performing comparison with the dosage distribution graph extracted from the planning system. The method utilizes the ball body provided by the manufacturer, the development-free film is easy to buy, the material preparation is feasible and convenient, the operation is simple, the conformity index result is direct and scientific and has a relatively huge promotion value.

Description

technical field [0001] The invention relates to a method for verifying the dose distribution of a gyro knife. Background technique [0002] The full name of the gyro knife is "Gyro Rotating Cobalt 60 Stereotactic Radiosurgery System", which is one of the latest stereotactic radiotherapy methods. It adopts the rotation principle of the aerospace gyroscope and installs the cobalt 60 focused radiation source in two vertical directions. On a gyroscope that rotates synchronously. This gyroscopic rotating irradiation method can theoretically greatly improve the radiotherapy gain ratio. The manufacturer claims that the focal skin ratio can reach 550:1. [0003] The more precise the equipment, the higher the requirements for quality assurance and control. However, gyro knife manufacturers have only developed limited quality control techniques for medical clinical applications. For example, in the isocentric method of crystal glass ball phantom verification, the output result of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1001A61N5/1028A61N5/1031A61N5/1049A61N5/1071A61N2005/1085
Inventor 严思奇袁君金乔宁徐彷
Owner 严思奇