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A dual-projection respiratory self-gating technique for whole-heart coronary MRA by Peng Lai; Andrew C. Larson; Xiaoming Bi; Renate Jerecic; Debiao Li is a Medicine article available to read on EtoBox.

What is A dual-projection respiratory self-gating technique for whole-heart coronary MRA about?

## Abstract ## Purpose To investigate the accuracy of a dual‐projection respiratory self‐gating (DP‐RSG) technique in dynamic heart position measurement and its feasibility for free‐breathing whole‐heart coronary MR angiography (MRA). ## Materials and Methods A DP‐RSG method is proposed to enable accurate direct measurement of heart position by acquiring two whole‐heart projections. On 14 volunteers we quantitatively evaluated the efficacy of DP‐RSG by comparison with diaphragmatic navigator (NAV) and single‐projection‐based respiratory self‐gating (SP‐RSG) methods. For DP‐RSG we also compared center‐of‐mass and two profile‐matching algorithms in deriving heart motion. Coronary imaging was conducted on eight volunteers based on retrospective gating to preliminarily validate the effectiveness of DP‐RSG for whole‐heart coronary MRA. Comparison of vessel delineation was performed between images reconstructed using different gating methods. ## Results The quantitative evaluation shows that DP‐RSG more accurately tracks heart motion than NAV with all gating window (GW) values and SP‐RSG approaches with GW ≥2.5 mm and profile‐matching algorithms are more reliable for motion derivation th

Who reads A dual-projection respiratory self-gating technique for whole-heart coronary MRA?

Author

Peng Lai; Andrew C. Larson; Xiaoming Bi; Renate Jerecic; Debiao Li

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1053-1807)

Published

2008

Language

EN

Field

Medicine (Health Sciences)