Patient effective dose during pacemaker implantation at a flat panel and image intensifier angiography system. (September 2016) - Vlastou, E.
Abstract : Introduction: Pacemaker implantation is a minimally invasive technique performed under fluoroscopic guidance. Purpose: This study aims to compare effective dose (ED) delivered to patients at pacemaker implantation procedures by two angiographic systems of different image capture technology; one with flat panel detector (FPD) and one with image intensifier (II). Materials and methods: A retrospective analysis of 62 procedures performed at Attikon University Hospital of Athens has been conducted. Data concerning dose area product (DAP), fluoroscopy time and patient's weight and height have been collected. The ED has been calculated, multiplying DAP with a conversion factor of 0.2 mSv/(Gy ∗ cm 2 ) and the results have been divided in categories accordingly to patients' BMI and fluoroscopy time. Results: ED, presented as median and range values, for normal, over weighted and obese patients that have been operated under a FPD X-ray system, in a fluoro time less than five minutes was 0.49 mSv (0.09–1.1 mSv), 0.67 mSv (0.4–1.2 mSv) and 1.18 mSv (1–1.3 mSv) respectively. The corresponding values for an II system were 0.50 mSv (0.5–0.8 mSv), 2.49 mSv (1.86–3.58 mSv) and 1.70 mSv (0.8–3.3 mSv). For fluoro time greater than five minutes in FPD imaging, ED for the three BMI categories was 1.57 mSv (0.7–3.7 mSv), 0.74 mSv (0.45–1.26 mSv) and 2.93 mSv (1.78–3.45 mSv), while for the II angiography system ED was 12.29 mSv (1.88–49.27 mSv), 28.36 mSv (6.27–15.43 mSv) and 35.27 mSv (5.84–158, 73 mSv). Conclusion: Obtained results indicate statistically significant higher radiation burden associated with II system compared to FPD system used for pacemaker's implantations ( p < 0.05). Disclosure: All authors confirm that none relationship may bias this presentation.