Coronary artery anomalies and variants: Technical feasibility of assessment with coronary MR angiography at 3 T

Ahmed M. Gharib, Vincent B. Ho, Douglas R. Rosing, Daniel A. Herzka, Matthias Stuber, Andrew E. Arai, Roderic I. Pettigrew

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this study was to prospectively use a whole-heart three-dimensional (3D) coronary magnetic resonance (MR) angiography technique specifically adapted for use at 3 T and a parallel imaging technique (sensitivity encoding) to evaluate coronary arterial anomalies and variants (CAAV). This HIPAA-compliant study was approved by the local institutional review board, and informed consent was obtained from all participants. Twenty-two participants (11 men, 11 women; age range, 18-62 years) were included. Ten participants were healthy volunteers, whereas 12 participants were patients suspected of having CAAV. Coronary MR angiography was performed with a 3-T MR imager. A 3D free-breathing navigator-gated and vector electrocardiographically-gated segmented k-space gradient-echo sequence with adiabatic T2 preparation pulse and parallel imaging (sensitivity encoding) was used. Whole-heart acquisitions (repetition time msec/echo time msec, 4/1.35; 20° flip angle; 1 x 1 x 2-mm acquired voxel size) lasted 10-12 minutes. Mean examination time was 41 minutes ± 14 (standard deviation). Findings included aneurysms, ectasia, arteriovenous fistulas, and anomalous origins. The 3D whole-heart acquisitions developed for use with 3 T are feasible for use in the assessment of CAAV.

Original languageEnglish (US)
Pages (from-to)220-227
Number of pages8
JournalRADIOLOGY
Volume247
Issue number1
DOIs
StatePublished - Apr 2008

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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