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Abstract #4797

An Active Decoupled HTS Film Coil for 1.5T MRI

Lian Xue 1 , Zungang Liu 1 , Changwu Hu 1 , Kuan Zhang 1 , Erzhen Gao 1 , QY Ma 1 , Nikolaus M Szeverenyi 2 , Rebecca Theilmann 2 , and William Bradley 2

1 Time Medical Systems, Inc., San Diego, CA, United States, 2 Radiology, Univ. of California, San Diego, San Diego, CA, United States

A clinically useful 10 cm diameter high temperature superconductor (HTS) surface coil was designed, constructed, and tested for wrist imaging performance on a 1.5 Tesla scanner. The cryostat was constructed of fiberglass and had a liquid nitrogen hold time of 5 hrs and a vacuum hold time of 4 weeks. Comparison of this coils performance with a commercial 10 cm room temperature copper coil demonstrated a greater than 2 fold improvement in SNR. This receive coil has an active detuning circuit that can be used in future array coils designs.

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