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Proceedings Paper

Magnetic resonance microwave absorption imaging: initial experimental results in phantoms
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Paper Abstract

We have used phase contrast magnetic resonance gradients to image small displacements induced by a pulsed 434 MHz microwave field. Thermoelastic expansions, which are related to the tissues' local microwave absorption properties and the applied microwave field distribution are encoded into the phase of MR images. The imaging principles are applicable to other irradiation sources. Initial efforts to develop the signal generation and control necessary for synchronous pulsed microwave power deposition and MR image acquisition have been successful. Preliminary results suggest that MR phase accumulation associated with microwave power deposition in a localized absorber has been observed.

Paper Details

Date Published: 29 March 2007
PDF: 5 pages
Proc. SPIE 6511, Medical Imaging 2007: Physiology, Function, and Structure from Medical Images, 65112K (29 March 2007); doi: 10.1117/12.710666
Show Author Affiliations
Bin Xie, Dartmouth College (United States)
John Weaver, Dartmouth College (United States)
Paul Meaney, Dartmouth College (United States)
Keith Paulsen, Dartmouth College (United States)

Published in SPIE Proceedings Vol. 6511:
Medical Imaging 2007: Physiology, Function, and Structure from Medical Images
Armando Manduca; Xiaoping P. Hu, Editor(s)

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