Radiation dose from percutaneous transluminal coronary angioplasty procedure performed using a flat detector for different clinical angiographic projections

This study intends to assess radiation dose based on
angiographic projection and vessel complexities for clinical protocols used in the performance of
percutaneous transluminal coronary angioplasty (PTCA). Dose –area product (DAP), reference air kerma
( K a,r ) and real-time monitoring of tube potentials and tube current for each angiographic
projection and dose setting were evaluated for 66 patients who underwent PTCA using a flat detector
system. The mean DAP and cumulative K a,r were 32.71 Gy cm 2 (0.57 Gy), 51.24 Gy cm 2 (0.9 Gy) and
102.03 Gy cm 2 (1.77 Gy) for single-, double- and triple-vessel PTCA, respectively. Among commonly
used angiographic projections, left anterior oblique 45 °—caudal 35° reached 2 Gy in 55 min using a
low-dose fluoroscopy setting and 21 min for a mediu...

Source: Journal of Radiological Protection - March 13, 2018 Category: Physics Authors: Anna Varghese, Roshan S Livingstone, Lijo Varghese, Subhrangshu Dey, John Jose, Viji Samuel Thomson, Oommen K George and Paul V George Source Type: research