1. Introduction

Since the founding of the People's Republic of China, my country's medical diagnostic radiology has developed rapidly. According to statistics, there are currently about 100,000 medical diagnostic X-ray machines of various types in the country, and about 200 million people undergo diagnostic X-ray examinations every year. This figure tells us that the exposure of diagnostic X-rays is the largest source of artificial ionizing radiation received by the public in our country. Therefore, strengthening the protection of diagnostic X-ray subjects and minimizing the potential harm caused by X-ray inspection to the whole people is the bounden duty of radiological diagnosis and radiological protection workers in the Centers for Disease Control and Prevention of all provinces, cities, and autonomous regions across the country. The RD-180 intelligent X-ray machine quality control detector produced by our company (produced by the Ministry of Health Radiological Protection Supervision) fully meets the requirements of GBZ 130-2002 "Health Protection Standards for Medical X-ray Diagnosis".

RD-180 intelligent X-ray machine quality control detector is a dosimeter specially designed for the quality control of medical diagnostic X-ray machines. It can be used alone or together with other quality control testing tools to detect the output of diagnostic X-ray machines, output stability, exposure time, exposure time repeatability, mAs linearity, half-value layer, and before and after the phantom The air kerma and so on.

The characteristics of the RD-180 intelligent X-ray machine quality control detector are: The detector is composed of semiconductors, is small in size, high in sensitivity, is not affected by the environment, and has strong anti-interference ability. It replaces the parallel plate ionization chamber used in the past, which is affected by high temperature and high humidity and causes leakage. The measuring component of the RD-180 intelligent X-ray machine quality control detector is composed of an amplifying circuit and a digital circuit. Its function is to convert the radiation ionization signal collected by the detector into a digital signal to be read out or printed and recorded. Because the measurement system adopts a single-chip microprocessor, it realizes the functions of self-check, self-calibration, self-zero adjustment and automatic range change of the dosimeter. The dosimeter has a compact structure and is simple to use. In addition, the scale factor of the dosimeter can also be input through the panel to achieve the purpose of automatically correcting the reading. The use of RD-180 intelligent X-ray machine quality control detector to carry out quality inspection on diagnostic X-ray machines not only has social benefits, but also can create certain economic benefits.

二、技术性能