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https://hdl.handle.net/20.500.14279/2371
Τίτλος: | Fast MRI flow imaging by sparse sampling and segmentation | Συγγραφείς: | Hershey, Bradley L. More, Rohan A. |
metadata.dc.contributor.other: | Αναγιωτός, Ανδρέας Anayiotos, Andreas |
Λέξεις-κλειδιά: | Computational fluid dynamics;Computer simulation;Magnetic resonance imaging | Ημερομηνία Έκδοσης: | 2004 | Πηγή: | ASME International Mechanical Engineering Congress and Exposition, 2004, Anaheim, United States of America | Περίληψη: | Clinical use of cardiac synchronized Magnetic Resonance Imaging has been limited because of long unacceptable acquisition times. BRISK (Block Regional Interpolation Scheme for k-space) is a rapid MRI technique, which employs temporal sparse sampling scheme that varies the sampling rate as a function of distance from the k-space center. Using combination of conventional segmentation and BRISK approach, a new rapid phase contrast cine approach named FAST was investigated. FAST technique samples contiguous regions of k-space using a segmentation factor, just as in conventional segmentation, with the difference that the segmentation factor (SF) is varied as a function of distance from the k-space center. FAST and BRISK can be performed in nearly equally scan times. Both retained excellent axial-velocity accuracy. However secondary velocities, which were two orders of magnitude lower than the primary, suffered from comparable inaccuracies and distortion in conventional segmentation, BRISK and FAST. | URI: | https://hdl.handle.net/20.500.14279/2371 | ISSN: | 03609960 | Rights: | © 2004 by ASME | Type: | Conference Papers | Affiliation: | University of Alabama at Birmingham |
Εμφανίζεται στις συλλογές: | Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation |
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