Abstract
Interventional radiology is widely employed; however, the complexity and duration of certain procedures may result in significant radiation exposure to patients.This study presents a comparison between a commercial computational dose mapping methodusedin interventional radiology, Dose Map, and optically stimulated luminescencedosimetry using a matrix built withthesedosimeters. The dosimetric material was obtained from a roll of Landauer Luxel®tape and calibrated on a GE®Innova 4100 IQ angiography system,using an ionization chamber as a reference. The calibration yielded a linearrelationship between the readout signal and the airkerma. Experimentswere conductedusing homogeneouspoly(methyl methacrylate) phantoms,as well as clinical monitoring of patients. The maximum deviation between kerma values measured by the dosimeters and those estimated by Dose Map was 14%. The comparison among the dosimeter matrix, radiochromic film, and Dose Map demonstratedgood geometric agreement in both phantom studies and patient monitoring. These results confirm the applicability of Dose Map for real-time dose monitoring, contributing to improved patient safety in interventional radiology.
Keywords
interventional radiology, entrance skin kerma, peak skin dose, OSL dosimetry.
