Measuring bracket for measuring leakage radiation under machine head of medical accelerator

Abstract

The invention relates to a measuring bracket for measuring the leakage radiation under a machine head of a medical accelerator. The measuring bracket comprises a positioning plate, eight first connecting rods and eight second connecting rods, wherein the eight second connecting rods and the eight first connecting rods are respectively arranged in the corresponding directions along the circumferential direction of the positioning plate; the four first connecting rods, which are respectively positioned in the 12 o'clock direction, the 3 o'clock direction, the 6 o'clock direction and the 9 o'clock direction, are respectively provided with support rods; the first connecting rods, the second connecting rods and the support rods are respectively and correspondingly provided with first measuringpoints, second measuring points, third measuring points, fourth measuring points and fifth measuring points. The measuring bracket, provided by the invention, for measuring the leakage radiation underthe machine head of the medical accelerator has the advantages of being simple in structure, convenient to use, high in efficiency, and the like, can detect the key indicators of dosimetry, shorten the time used for position verification, installation, debugging and data collection, is in line with the domestic radiotherapy application status, and is conducive to the standardized application of medical institutions, technical service organizations and related departments.

Description

technical field [0001] The invention belongs to the technical field of measurement of radiation leakage under the nose of a medical accelerator, and in particular relates to a measurement bracket for radiation leakage under the nose of a medical accelerator. Background technique [0002] In view of the requirements of 29.2 and 29.3 in GB 9706.5-2008 "Medical Electrical Equipment Part 2: Special Requirements for the Safety of Electron Accelerators with Energy 1MeV to 50MeV" and the requirements in 5.1 and 5.2 of GBZ 126-2011 "Radiation Protection Requirements for Electron Accelerator Radiation Therapy" , radiation leakage under the head of medical electron accelerator is one of the key contents of its protective performance requirements. However, the relevant national standards only set standard requirements for its performance, and the specific implementation rules or recommended practical tools have not been further clarified, and relevant domestic supervision units, public...

AI Technical Summary

Problems solved by technology

[0004] At present, although there has been a measurement of radiation leakage under the head of a medical accelerator in China, it uses a horizontal plane in the machine room to be fixed to the front, back, up and down, left and right around the machine room by pulling wires, and then according to GBZ126-2011 "Electronic The radiation measurement points in 5.1 and 5.2 of Accelerator Radiation Therapy Radiation Protection Requirements require that the corresponding position of the line be stained with dose measurement components. The method is complex, cumbersome, and the workload is heavy. The most important thing is that there is no specific measurement method and process.

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