Quick Reduction of Specific Absorption Rate Constraints in Parallel RF Excitation Pulse Design by Maximum Volume Inscribed Ellipsoids
Author
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
In medical magnetic resonance imaging, parallel radio frequency excitation pulses have to respect a large number of specific absorption rate constraints.
Geometrically, each of these constraints can be interpreted as a complex, centered ellipsoid.
We propose to replace a collection of such constraints by the single constraint which corresponds to the associated maximum volume inscribed ellipsoid and implies all original constraints.
We describe how to compute this ellipsoid via convex programming.
Examples show that this reduction has very short computation times but cuts away parts of the feasible power domain.
American Psychological Association (APA)
Majewski, Kurt. 2019. Quick Reduction of Specific Absorption Rate Constraints in Parallel RF Excitation Pulse Design by Maximum Volume Inscribed Ellipsoids. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1130809
Modern Language Association (MLA)
Majewski, Kurt. Quick Reduction of Specific Absorption Rate Constraints in Parallel RF Excitation Pulse Design by Maximum Volume Inscribed Ellipsoids. No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1130809
American Medical Association (AMA)
Majewski, Kurt. Quick Reduction of Specific Absorption Rate Constraints in Parallel RF Excitation Pulse Design by Maximum Volume Inscribed Ellipsoids. . 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1130809
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1130809