Magnetic resonance microwave absorption imaging: Initial experimental results in phantoms

被引：0

作者：

Xie, Bin ^{[1
]}

Weaver, John ^{[1
]}

Meaney, Paul ^{[1
]}

Paulsen, Keith ^{[1
]}

机构：

[1] Dartmouth Coll, Sch Engn, Hanover, NH 03755 USA

来源：

MEDICAL IMAGING 2007: PHYSIOLOGY, FUNCTION, AND STRUCTURE FROM MEDICAL IMAGES | 2007年 / 6511卷

关键词：

thermoelastic wave; MR phase encoding; microwave absorption;

D O I：

10.1117/12.710666

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

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 linage acquisition have been successful. Preliminary results suggest that MR phase accumulation associated with microwave power deposition in a localized absorber has been observed.

引用

页数：5

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