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©2013 Baishideng Publishing Group Co., Limited. All rights reserved.
World J Cardiol. Oct 26, 2013; 5(10): 382-386
Published online Oct 26, 2013. doi: 10.4330/wjc.v5.i10.382
Published online Oct 26, 2013. doi: 10.4330/wjc.v5.i10.382
Low-dose CT coronary angiography using iterative reconstruction with a 256-slice CT scanner
Patricia Carrascosa, Gastón A Rodriguez-Granillo, Carlos Capuñay, Alejandro Deviggiano, Department of Cardiovascular Imaging, Diagnóstico Maipú, Buenos Aires, B1602ABQ, Argentina
Author contributions: All authors contributed to the manuscript.
Correspondence to: Patricia Carrascosa, MD, PhD, Department of Cardiovascular Imaging, Diagnóstico Maipú, Av Maipú 1668, Vicente López Buenos Aires, B1602ABQ, Argentina. patriciacarrascosa@diagnosticomaipu.com.ar
Telephone: +54-11-48377596 Fax: +54-11-48377596
Received: June 9, 2013
Revised: July 25, 2013
Accepted: August 28, 2013
Published online: October 26, 2013
Revised: July 25, 2013
Accepted: August 28, 2013
Published online: October 26, 2013
Core Tip
Core tip: A consecutive series of 200 patients referred to our institution to undergo computer tomography coronary angiography (CTCA) were sequentially assigned to filtered back projection (FBP) or iterative reconstruction (IR). The percent assessable coronary segment was similar between groups. Radiation dose was significantly lower in the IR group. Image noise and signal density levels did not differ between FBP and IR groups. The IR group was associated to significant effective dose reductions, irrespective of the acquisition mode. Our findings suggest that application of IR in CTCA preserves image interpretability despite a significant reduction in radiation dose.