Document Detail

Local re-inversion coronary MR angiography: arterial spin-labeling without the need for subtraction.
MedLine Citation:
PMID:  18383252     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To implement a double-inversion bright-blood coronary MR angiography sequence using a cylindrical re-inversion prepulse for selective visualization of the coronary arteries. MATERIALS AND METHODS: Local re-inversion bright-blood magnetization preparation was implemented using a nonselective inversion followed by a cylindrical aortic re-inversion prepulse. After an inversion delay that allows for in-flow of the labeled blood-pool into the coronary arteries, three-dimensional radial steady-state free-precession (SSFP) imaging (repetition/echo time, 7.2/3.6 ms; flip angle, 120 degrees, 16 profiles per RR interval; field of view, 360 mm; matrix, 512, twelve 3-mm slices) is performed. Coronary MR angiography was performed in three healthy volunteers and in one patient on a commercial 1.5 Tesla whole-body MR System. RESULTS: In all subjects, coronary arteries were selectively visualized with positive contrast. In addition, a middle-grade stenosis of the proximal right coronary artery was seen in one patient. CONCLUSION: A novel T1 contrast-enhancement strategy is presented for selective visualization of the coronary arteries without extrinsic contrast medium application. In comparison to former arterial spin-labeling schemes, the proposed magnetization preparation obviates the need for a second data set and subtraction.
Marcus Katoh; Elmar Spuentrup; Christoph Barmet; Matthias Stuber
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of magnetic resonance imaging : JMRI     Volume:  27     ISSN:  1053-1807     ISO Abbreviation:  J Magn Reson Imaging     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-04-03     Completed Date:  2008-08-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9105850     Medline TA:  J Magn Reson Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  913-7     Citation Subset:  IM    
Copyright Information:
(c) 2008 Wiley-Liss, Inc.
Department of Diagnostic and Interventional Radiology, University Hospital Saarland, Homburg, Germany.
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MeSH Terms
Coronary Circulation
Coronary Stenosis / diagnosis
Coronary Vessels / anatomy & histology*
Magnetic Resonance Angiography*
Middle Aged
Spin Labels*
Subtraction Technique
Grant Support
Reg. No./Substance:
0/Spin Labels

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