Tracking local volume 3D-echo-planar coronary artery imaging

✍ Scribed by P.D. Gatehouse; J. Keegan; G.Z. Yang; R.H. Mohiaddin; D.N. Firmin

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 230 KB
• Volume: 46
• Category: Article
• ISSN: 0740-3194
• DOI: 10.1002/mrm.1293

✦ Synopsis

Abstract

Aiming for robust high‐resolution free respiration coronary artery imaging, localized tracking volume selective 3D‐EPI at spatial resolution 1.25 × 1.25 × 3 mm and temporal resolution 65 ms was evaluated in 14 normal subjects. Subject‐specific motion tracking factors were measured between diaphragm navigator and coronary artery in S‐I and A‐P directions. Imaging was repeated with and without tracking, accepting 128 cardiac cycles over a 20‐mm range from free breathing. Reference images with minimal respiratory motion (5‐mm range) used LED‐guided multiple breathholds. Depending on accurate motion measurement, coronary arteries were imaged with tracking, in a 20‐mm range of free breathing, with increased scan efficiency but without significant loss of image quality compared to multiple breathhold imaging. Magn Reson Med 46:1031–1036, 2001. © 2001 Wiley‐Liss, Inc.