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
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.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1016/s1090-7807(02)00106-4
- PMID 12482703
- Persistent URL
- https://sonar.ch/global/documents/278953
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