Radiation dose from percutaneous transluminal coronary angioplasty procedure performed using a flat detector for different clinical angiographic projections. (13th March 2018)

• Record Type: Journal Article
• Authors: Varghese, Anna; Livingstone, Roshan S; Varghese, Lijo; Dey, Subhrangshu; Jose, John; Thomson, Viji Samuel; George, Oommen K; George, Paul V
• Is Part Of: Journal of radiological protection. Volume 38:Number 2(2018:Jun.)
• Page Start: 511
• Page End: 524
• Publication Date: 2018-03-13
• Subjects: radiation dose -- angiographic projections -- PTCA -- vessel complexity -- flat detector; Radiation -- Safety measures -- Periodicals; Health Physics -- Periodicals; Radiation Monitoring -- Periodicals; Radiation Protection -- Periodicals; Rayonnement -- Sécurité -- Mesures -- Périodiques; Electronic journals; Fulltext; Internet Resource; Periodical; 363.179905
• DOI: 10.1088/1361-6498/aaab71
• Languages: English
• ISSNs: 0952-4746

Abstract

Abstract: The radiation dose from complex cardiac procedures is of concern due to the lengthy fluoroscopic screening time and vessel complexities. 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 medium-dose setting. Use of a low-dose setting for fluoroscopic screening showed a radiation dose reduction of 39% compared with a medium-dose setting.