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Interleaved spiral cine coronary artery velocity mapping
Author(s) -
Keegan Jennifer,
Gatehouse Peter,
Yang GuangZhong,
Firmin David
Publication year - 2000
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/1522-2594(200006)43:6<787::aid-mrm2>3.0.co;2-6
Subject(s) - spiral (railway) , reproducibility , nuclear medicine , artery , blood flow , medicine , physics , nuclear magnetic resonance , mathematics , cardiology , mathematical analysis , statistics
Navigator‐echo controlled interleaved spiral cine coronary‐artery velocity maps were acquired in eight free‐breathing volunteers. Good quality data were achieved in all subjects with phasic flow being clearly demonstrated. The improved efficiency of spiral k ‐space coverage compared to that of more conventional spin‐warp techniques resulted in a mean scan time for 256 × 256 pixel‐matrix studies of 94 sec (range 69 – 123 sec, SD = 20 sec), the navigator acceptance rate being typically 40–45%. Repeat scans in five subjects showed a high degree of reproducibility, with no significant differences occurring in the peak velocities (14.6 ± 1.4 cm/sec vs. 14.5 ± 1.5 cm/sec, P = ns) nor in the mean velocities measured over all cine phases (8.3 ± 2.1 cm/sec vs. 8.7 ± 1.6 cm/sec, P = ns). The potential benefits of using this sequence for assessing coronary blood flow and flow reserve are discussed. Magn Reson Med 43:787–792, 2000. © 2000 Wiley‐Liss, Inc.