Wrist: improved MR imaging with optimized transmit-receive coil design.

Kocharian, Armen; Adkins, Mark C; Amrami, Kimberly K; McGee, Kiaran P; Rouleau, Peggy A; Wenger, Doris E; Ehman, Richard L; Felmlee, Joel P · Radiology · 2002

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Abstract

The optimized wrist coil was designed and built as a transmit-receive birdcage coil for 1.5-T magnetic resonance (MR) imaging. Phantom studies were conducted to compare the optimized design with custom-designed and commercially available phased-array wrist coils and showed a 50%-90% improvement in signal-to-noise ratio (SNR). Blinded review of wrist images obtained in six volunteers showed that the optimized birdcage coil was preferred in 75% of the comparisons. An optimized birdcage coil designed for wrist imaging has improved both SNR and uniformity compared with those with a phased-array coil with the same geometry.

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