title: Coronary computed tomography angiography in a patient with atrial fibrillation, case report.
abstract: Atrial fibrillation (AF) is the most common persistent arrhythmia. It is associated with wide range of cardiac clinical conditions. Because of variable duration of cardiac cycle resulting in reduced image quality, AF has been considered relative contraindication for performing coronary computed tomography angiography (CCTA). However, recent reports have suggested that newer dual source scanner with higher temporal resolution can be used in patients with AF (Oncel et al., 2007; Wolak et al., 2008; Rist et al., 2009). Image quality can be maintained if heart rate is lowered to less than 70 beats per minute. However, high heart rate can still be challenging. Mapping systolic phase with the use of absolute delay reconstruction algorithm has been shown to provide better image quality. In this article, we present a case of patient with chronic AF and in whom coronary examination was required before going to repair of aortic root dissection. CCTA, with the use of absolute delay reconstruction algorithm, provided diagnostic image quality of the coronary arteries.
authors: King Abdulaziz Cardiac Center, National Guard Health Affairs, Riyadh, Saudi Arabia.
authors: Ahmed
authors: A
authors: Alsaileek
authors: Mohsen
authors: M
authors: Alharthi
authors: Mouaz
authors: M
authors: Almallah
keywords: Atrial fibrillation; Coronary artery disease; Coronary computed tomography angiography
references: Eur Heart J. 2010 Sep;31(18):2230-7
references: 20624768
references: Invest Radiol. 2009 Mar;44(3):159-67
references: 19151607
references: Radiology. 2007 Dec;245(3):703-11
references: 18024451
references: AJR Am J Roentgenol. 2007 Dec;189(6):1317-23
references: 18029865
references: J Cardiovasc Comput Tomogr. 2008 May-Jun;2(3):172-80
references: 19083942