Abstract
Selecting the optimal phase for coronary artery evaluation can be challenging, especially at higher heart rates, given that the optimal phase may differ for each of the coronary arteries. This study aimed to evaluate a novel vessel-specific algorithm which automatically outputs the minimum motion phase per coronary artery. The study included 44 patients who underwent 256-slice cardiac computed tomography for evaluation of chest pain. End-systolic and mid-diastolic minimal motion phases were automatically calculated by a previously validated global motion algorithm and by a new vessel-specific algorithm which calculates the minimum motion for each of the three main coronary arteries, separately. Two readers blindly evaluated all coronary segments for image quality. Median scores per coronary artery were compared by the Wilcoxon signed rank test. The variation, per patient, between the optimal phases of the three coronary arteries was 5.0 ± 4.5% (1%-22%) for end systole and 4.8 ± 4.1% (0%-19%) for mid diastole. The mean image quality scores per coronary artery were 4.0 ± 0.61 for the vessel-specific approach and 3.80 ± 0.69 for the global phase selection (P < .001). Overall, 46 of 122 arteries had a better score with the vessel-s...Continue Reading
References
Dec 2, 1999·Radiology·Y WangG W Bergman
Aug 9, 2003·Medical Physics·M VembarN L Greenberg
Jan 10, 2004·Medical Physics·R ManzkeD Hawkes
Jan 18, 2005·Medical Physics·R ManzkeM Grass
Jul 16, 2005·European Radiology·Martin H K HoffmannMichael Grass
Jan 28, 2006·European Journal of Radiology·Maros FerencikThomas J Brady
May 16, 2006·European Radiology·Sebastian LeschkaHatem Alkadhi
Aug 30, 2008·IEEE Transactions on Medical Imaging·Olivier EcabertJürgen Weese
Nov 21, 2008·AJR. American Journal of Roentgenology·Raoul M S JoemaiLucia J M Kroft
Dec 5, 2008·Acta Neurologica Scandinavica·M HoffmannE Bromley
Feb 25, 2009·European Radiology·H SeifarthK-U Juergens
Mar 11, 2009·Journal of Cardiovascular Computed Tomography·Gilbert L RaffUNKNOWN Society of Cardiovascular Computed Tomography
Mar 12, 2009·European Radiology·Balazs RuzsicsU Joseph Schoepf
Aug 31, 2010·Academic Radiology·Greta S P MokTung-Hsin Wu
Jul 9, 2011·Medical Image Analysis·Olivier EcabertJürgen Weese