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J Magn Reson Imaging. 2004 Aug;20(2):327-30.

Myocardial delayed enhancement imaging using inversion recovery single-shot steady-state free precession: initial experience.

Author information

1
MRI Research, Department of Radiology, Evanston Hospital and Northwestern University Feinberg School of Medicine, 2650 Ridge Avenue, Evanston, IL 60201, USA. lwei@enh.org

Abstract

PURPOSE:

To evaluate the feasibility of using an inversion recovery single-shot steady-state free precession (SS_SSFP) sequence for myocardial delayed enhancement (MDE) imaging, and to compare SS_SSFP with the conventional inversion recovery segmented fast gradient echo (IR_FGRE) technique.

MATERIALS AND METHODS:

Ten subjects (four volunteers and six patients with suspected or known coronary disease) were included in this study. All subjects were scanned with both IR_FGRE and SS_SSFP sequences 15-25 minutes after gadopentetate dimeglumine injection. Overall image quality, signal-to-noise ratios (SNRs), and contrast-to-noise ratios (CNRs) between the two techniques were compared.

RESULTS:

Compared to IR_FGRE, SS_SSFP exhibited adequate image quality (average scores = 3.8 for IR_FGRE and 3.9 for SS_SSFP) with much shorter acquisition time (14.4 seconds for IR_FGRE and 1.3 seconds for SS_SSFP). SS_SSFP images showed higher SNRs (P < 0.05) and less motion artifact from breathing. Enhanced myocardium was detected by both techniques in three patients, but the image sharpness is compromised in SS_SSFP images.

CONCLUSION:

SS_SSFP provides adequate image quality compared to IR_FGRE, while requiring a much shorter acquisition time. It is feasible to use SS_SSFP as an alternative method for MDE imaging, especially in patients who have difficulty with holding their breath.

PMID:
15269961
DOI:
10.1002/jmri.20095
[Indexed for MEDLINE]
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