Initial results on in vivo human coronary MR angiography at 7 T.
Details
Serval ID
serval:BIB_F205BF35FBDE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Initial results on in vivo human coronary MR angiography at 7 T.
Journal
Magnetic Resonance in Medicine
ISSN
1522-2594[electronic], 0740-3194[linking]
Publication state
Published
Issued date
2009
Volume
62
Number
6
Pages
1379-1384
Language
english
Abstract
Seven tesla (T) MR imaging is potentially promising for the morphologic evaluation of coronary arteries because of the increased signal-to-noise ratio compared to lower field strengths, in turn allowing improved spatial resolution, improved temporal resolution, or reduced scanning times. However, there are a large number of technical challenges, including the commercial 7 T systems not being equipped with homogeneous body radiofrequency coils, conservative specific absorption rate constraints, and magnified sample-induced amplitude of radiofrequency field inhomogeneity. In the present study, an initial attempt was made to address these challenges and to implement coronary MR angiography at 7 T. A single-element radiofrequency transmit and receive coil was designed and a 7 T specific imaging protocol was implemented, including significant changes in scout scanning, contrast generation, and navigator geometry compared to current protocols at 3 T. With this methodology, the first human coronary MR images were successfully obtained at 7 T, with both qualitative and quantitative findings being presented.
Keywords
Adult, Algorithms, Coronary Angiography/methods, Coronary Vessels/anatomy & histology, Female, Humans, Image Enhancement/methods, Image Interpretation, Computer-Assisted/methods, Magnetic Resonance Angiography/methods, Male, Pilot Projects, Reproducibility of Results, Sensitivity and Specificity
Pubmed
Web of science
Open Access
Yes
Create date
02/03/2010 17:59
Last modification date
20/08/2019 16:19