Abstract
In this paper, an intelligent radioactivity and radiation dose monitoring system is designed, which can be used in the field of nuclear medicine. The system can dynamically monitor the body surface radioactivity and radiation dose rate of patients receiving 131I radioactive drug treatment, and can identify the personnel who exceed the radiation threshold and send out sound and light alarm. Compared with other monitoring equipment, this system has higher accuracy and can guide the clinical treatment of nuclear medicine scientifically.
Highlights
Structure of the systemThe architecture of the monitoring system for radioactivity and radiation dose in nuclear medicine is shown, which is mainly composed of detection unit and supporting circuit, control and storage core and peripheral modules
1 Introduction the national regulations, when the measured activity With the continuous development of nuclear technology, nuclear medicine assisted treatment of tumor technology has been widely applied. 131I is a kind of medical β decay nuclide, its maximum energy is 606kev, half-life is 8.02 days
In the process of specific treatment practice, the effective half-life is generally used to estimate the decay and metabolism of 131I in patients, so as to determine the specific discharge time of patients[4,5,6,7]. This calculation method does not consider the inconsistent metabolism and absorption of radioactive drugs in different patients, which may lead to a large residual radiation dose in patients after the end of the observation period; and in the actual medication process, doctors often increase a certain amount of drugs on top of the basic dosage to achieve better therapeutic effect[8,9]
Summary
The architecture of the monitoring system for radioactivity and radiation dose in nuclear medicine is shown, which is mainly composed of detection unit and supporting circuit, control and storage core and peripheral modules. The LCD supports three data display modes: radioactive activity, counting rate and radiation dose rate, and can dynamically switch among the three. The power supply is the internal core and external of the system part of the module provides power supply
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