Dose Assessment to Patients and Medical Staff from Interventional RadiologicalProcedures Using Tomographic Phantom

摘要

In this study, organ doses and effective doses to patient and medical staff during interventional radiological procedureswere estimated. International Commission on Radiological Protection (ICRP) provided a list of typical doses of variousinterventional procedures in publication 85. Most of the dose assessment data for interventional procedures were actualmeasurement and Monte Carlo simulation using stylized human phantoms. In the present study, tomographic phantoms,Korean Typical MAN-2 (KTMAN-2) were employed to estimate organ doses from interventional procedures. In this study,heart projections of cardiac catheterization were considered. The parameters of x-ray source and exposure conditions wereobtained from literature data. Particle transport was simulated using general purposed Monte Carlo code, MCNPX 2.5.0.Both primary x-rays incident upon patient and scattered radiations were transported coincidently. The patients doses werecompared with those derived from stylized phantom. The dose differences from stylized phantom were caused by anatomicalreality, such as the overlap of neighboring organs. The lens doses to medical staff did not exceed the 4 Gy which may causecataract to staff received less than 3 months. The results of this study would provide new information of radiation risk frominterventional procedures.