✦ LIBER ✦

Interstudy reproducibility of SSFP cine magnetic resonance: Impact of magnetic field strength and parallel imaging

✍ Scribed by Christopher D. Maroules; Roderick McColl; Amit Khera; Ronald M. Peshock

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 421 KB
Volume: 27
Category: Article
ISSN: 1053-1807
DOI: 10.1002/jmri.21343

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Purpose

To study the effects of field strength and parallel imaging on image contrast and interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady‐state free precession (SSFP) cardiovascular magnetic resonance (CMR).

Materials and Methods

Thirty‐two subjects (20 normal, 12 cardiac patients) underwent four SSFP cine short‐axis imaging studies: two at 1.5T, one at 3T, and another at 3T with parallel imaging (SENSE). RV and LV contrast‐to‐noise ratios (CNRs) were compared between methods. Interstudy reproducibility of RV and LV measurements were assessed by Bland–Altman analyses.

Results

3T SENSE imaging reduced total imaging time from 8 ± 2 minutes to 3 ± 1 minute (P < 0.001). A significant gain in LV CNR was detected between 1.5T and 3T with SENSE (43.8 ± 6.5 vs. 48.4 ± 7.4, P = 0.01), but no significant gain was detected in RV CNR. The reproducibility of LV and RV measurements between two 1.5T studies was not significantly different from the reproducibility between a 1.5T study and a 3T study with SENSE.

Conclusion

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