Branch K, Hira R, Brusen R, et al. - The present study was conducted to investigate the diagnostic accuracy of ECG-gated coronary computed tomography angiography (CCTA) to diagnose coronary artery disease (CAD) among survivors of out-of-hospital circulatory arrest (OHCA). Head-to-pelvis CT scanning (<6 h ours from hospital arrival) was prospectively examined in OHCA survivors. This sub-study investigated the primary result of CCTA diagnostic accuracy to distinguish obstructive CAD (≥ 50% stenosis) compared with clinically-ordered invasive coronary angiography. Researchers included a total of 104 OHCA survivors. This study's findings demonstrate that early CCTA of OHCA survivors has high diagnostic accuracy to diagnose obstructive coronary artery disease. Nevertheless, the number of non-diagnostic coronary segments is high implying future CCTA refinement is required, such as the pre-CCTA use of nitroglycerin.