EVALUASI DOSE-AREA PRODUCT DAN WAKTU FLUOROSKOPI SEBAGAI METRIK DOSIS PADA AUDIT DOSIS PROSEDUR FLUOROSKOPI INTERVENSIONAL: STUDI MULTISENTER

Abstract

This study aims to evaluate conventional dose metrics, namely Dose-Area Product (DAP) and fluoroscopy time, commonly used in interventional fluoroscopy procedure dose audits, by comparing them to a dose metric that more closely represents the dose at the patient's skin, namely Entrance Surface Dose (ESD). The research was conducted by first calculating the ESD using AndroidTM-based software from a previous study (Mulia et al., 2020) with retrospective data from 2 (two) hospitals (20 patients each) that utilized the Philips Allura XPer FD20 interventional fluoroscopy system. The results showed that DAP and fluoroscopy time did not exhibit a linear correlation with the skin dose represented by ESD, with R2 values of 0.11 for Hospital A and 0.79 for Hospital B. Consequently, the DAP and fluoroscopy time dose metrics were deemed insufficient in representing the actual skin dose received by the patients. This study recommends medical physicists also include ESD calculations and utilize them in radiation dose audits as supplementary data to monitor patient deterministic effects directly. Keywords: skin dose, kerma, DAP, dose, interventional