OA224] Occupational radiation doses during interventional radiology residents training

Abstract

This study aimed to evaluate and quantify differences in radiation doses to staff due to the participation of residents during interventional radiology procedures. The study presents dosimetric results for medical staff (experienced radiologist and residents) based on sixty six hepatic chemoembolization procedures conducted in five hemodynamic departments in Recife, Brazil. During each procedure, patient’s data (mass and height) and dosimetric parameters such as the air kerma-area product (KAP) and fluoroscopic time were registered. Occupational dosimetry was performed using thermoluminescent dosimeters and direct ion dosemeters (DIS) distributed over various regions of the physician’s body. The results showed that the mean accumulated KAP for procedure with residents was 16% greater than without (247.5 Gy*cm2 vs. 208.6 Gy*cm2). The Mean personal dose equivalent Hp(3) in the left eye and the effective dose for residents were 34% (491,3 μSv vs. 325.2 μSv) and 28% (23.4 μSv vs. 17.2 μSv) respectively higher than those received by the experienced radiologist. The results of the occupational dosimetry using DIS dosemeters showed that these devices can be used in a complementary way to estimate the occupational eye lens doses in interventional procedures. High variability of radiation doses to medical staff was observed among the five medical institutions, mainly because of the performance of X-ray equipments, complexity of the procedures, physical characteristics of the patients, and the resident’s lack of training in radiation protection.