MRI of coronary vessel walls using radial k-space sampling and steady-state free precession imaging.

Details

Serval ID
serval:BIB_C827B929C037
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
MRI of coronary vessel walls using radial k-space sampling and steady-state free precession imaging.
Journal
Ajr. American Journal of Roentgenology
Author(s)
Katoh M., Spuentrup E., Buecker A., Schaeffter T., Stuber M., Günther R.W., Botnar R.M.
ISSN
1546-3141[electronic], 0361-803X[linking]
Publication state
Published
Issued date
2006
Volume
186
Number
6 Suppl 2
Pages
S401-S406
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
OBJECTIVE: The objective of our study was to investigate the impact of radial k-space sampling and steady-state free precession (SSFP) imaging on image quality in MRI of coronary vessel walls. SUBJECTS AND METHODS: Eleven subjects were examined on a 1.5-T MR system using three high-resolution navigator-gated and cardiac-triggered 3D black blood sequences (cartesian gradient-echo [GRE], radial GRE, and radial SSFP) with identical spatial resolution (0.9 x 0.9 x 2.4 mm3). The signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), vessel wall sharpness, and motion artifacts were analyzed. RESULTS: The mean SNR and CNR of the coronary vessel wall were improved using radial imaging and were best using radial k-space sampling combined with SSFP imaging. Vessel border definition was similar for all three sequences. Radial k-space sampling was found to be less sensitive to motion. Consistently good image quality was seen with the radial GRE sequence. CONCLUSION: Radial k-space sampling in MRI of coronary vessel walls resulted in fewer motion artifacts and improved SNR and CNR. The use of SSFP imaging, however, did not result in improved coronary vessel wall visualization.
Keywords
Adult, Artifacts, Coronary Vessels/anatomy & histology, Female, Humans, Magnetic Resonance Imaging/methods, Male
Pubmed
Web of science
Create date
02/03/2010 16:04
Last modification date
20/08/2019 15:43
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