Reciprocity and sensitivity of opposed-solenoid endovascular MRI probes.

Crottet D; Meuli R; Wicky S; van der Klink JJ

doi:10.1016/s1090-7807(02)00106-4

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Journal article

Reciprocity and sensitivity of opposed-solenoid endovascular MRI probes.

Crottet D Faculté des Sciences de Base, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Meuli R
Wicky S
van der Klink JJ

2002-12-17

Published in:

Journal of magnetic resonance (San Diego, Calif. : 1997). - 2002

Magnetic Resonance Spectroscopy

English Several forms of catheter-mounted "inside-out" probes for endovascular imaging have been proposed in the literature. The "opposed-solenoid" structure has been studied in relatively little detail, although it has some potential advantages over the others. Using a small water sample as a voxel, we measure point by point the spatial variation of the sensitivity and the rf field strength of such a probe, and connect the two by the reciprocity relation. By itself, the corresponding plot provides a nice example of the reciprocity relation at work; and for the characterization of the probe it gives a check on data quality. The results can be understood from simple considerations and agree well with the sensitivity observed in the image of a phantom.

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