Inherently self-calibrating non-Cartesian parallel imaging.

Details

Serval ID
serval:BIB_70EE0E2462E2
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Inherently self-calibrating non-Cartesian parallel imaging.
Journal
Magnetic Resonance In Medicine
Author(s)
Yeh E.N., Stuber M., McKenzie C.A., Botnar R.M., Leiner T., Ohliger M.A., Grant A.K., Willig-Onwuachi J.D., Sodickson D.K.
ISSN
0740-3194[print], 0740-3194[linking]
Publication state
Published
Issued date
2005
Volume
54
Number
1
Pages
1-8
Language
english
Notes
Publication types: Comparative Study ; Evaluation Studies ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S. ; Validation Studies
Publication Status: ppublish
Abstract
The use of self-calibrating techniques in parallel magnetic resonance imaging eliminates the need for coil sensitivity calibration scans and avoids potential mismatches between calibration scans and subsequent accelerated acquisitions (e.g., as a result of patient motion). Most examples of self-calibrating Cartesian parallel imaging techniques have required the use of modified k-space trajectories that are densely sampled at the center and more sparsely sampled in the periphery. However, spiral and radial trajectories offer inherent self-calibrating characteristics because of their densely sampled center. At no additional cost in acquisition time and with no modification in scanning protocols, in vivo coil sensitivity maps may be extracted from the densely sampled central region of k-space. This work demonstrates the feasibility of self-calibrated spiral and radial parallel imaging using a previously described iterative non-Cartesian sensitivity encoding algorithm.
Keywords
Algorithms, Artifacts, Artificial Intelligence, Calibration, Coronary Vessels/anatomy & histology, Equipment Failure Analysis/methods, Feasibility Studies, Humans, Image Enhancement/methods, Image Interpretation, Computer-Assisted/methods, Imaging, Three-Dimensional/methods, Information Storage and Retrieval/methods, Magnetic Resonance Angiography/instrumentation, Magnetic Resonance Angiography/methods, Reproducibility of Results, Sensitivity and Specificity
Pubmed
Web of science
Open Access
Yes
Create date
02/03/2010 16:04
Last modification date
20/08/2019 14:29
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