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Experimental design and fabrication of birdcage resonators for magnetic resonance imaging

✍ Scribed by Thomas Vullo; Raymond T. Zipagan; Romeo Pascone; Joseph P. Whalen; Patrick T. Cahill

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
503 KB
Volume
24
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

Although the birdcage resonator has been theoretically described for single‐ and multinuclear operation, this study provides the basic experimental guidelines needed for the fabrication and testing of such coils for various geometries and resonant frequencies from 10 to 95 MHz. The correlation of coil dimensions and resonant frequencies with individual inductance elements, L~1~, and L~2~, is also shown. Experimentally derived algorithms are presented for the determination of the capacitance needed for low‐pass resonators based on measurements of the coil's β€œglobal” inductance. Ten low‐pass birdcage coils with eight legs were evaluated and their four resonant frequencies were within 4% of theoretical predictions. Β© 1992 Academic Press, Inc.

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