Spin-labeling coronary MR angiography with steady-state free precession and radial k-space sampling: Initial results in healthy volunteers

Marcus Katoh, Matthias Stuber, Arno Buecker, Rolf W. Günther, Elmar Spuentrup

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this study was to prospectively compare free-breathing navigator-gated cardiac-triggered three-dimensional steady-state free precession (SSFP) spin-labeling coronary magnetic resonance (MR) angiography performed by using Cartesian k-space sampling with that performed by using radial k-space sampling. A new dedicated placement of the two-dimensional selective labeling pulse and an individually adjusted labeling delay time approved by the institutional review board were used. In 14 volunteers (eight men, six women; mean age, 28.8 years) who gave informed consent, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), vessel sharpness, vessel length, and subjective image quality were investigated. Differences between groups were analyzed with nonparametric tests (Wilcoxon, Pearson χ2). Radial imaging, as compared with Cartesian imaging, resulted in a significant reduction in the severity of motion artifacts, as well as an increase in SNR (26.9 vs 12.0, P < .05) in the coronary arteries and CNR (23.1 vs 8.8, P < .05) between the coronary arteries and the myocardium. A tendency toward improved vessel sharpness and vessel length was also found with radial imaging. Radial SSFP imaging is a promising technique for spin-labeling coronary MR angiography.

Original languageEnglish (US)
Pages (from-to)1047-1052
Number of pages6
JournalRADIOLOGY
Volume236
Issue number3
DOIs
StatePublished - Sep 1 2005

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Spin-labeling coronary MR angiography with steady-state free precession and radial k-space sampling: Initial results in healthy volunteers'. Together they form a unique fingerprint.

Cite this