In-Tsang Lin1, Hong-Chang Yang2, Jyh-Horng Chen1
1Interdisciplinary MRI/MRS Lab, Department of Electrical Engineering, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiper, 106, Taiwan; 2Department of Physics, National Taiwan University, Taipei 106, Taiwan
High-temperature superconducting (HTS) radio-frequency (RF) coil has been proposed as a promising tool for MR microscopy due to its zero-resistance characteristic for the MR probe design. However, the cryogenic system is very difficult to design due to its thermal insulation demands. In this study, we have succeeded to design a longitudinal dewar that can keep animal body temperature for more than three hours. A 40 mm in diameter Bi2Sr2Ca2Cu3Ox (Bi-2223) tape HTS RF coil with this dewar was demonstrated. The signal to noise gain is 3.79 compared to the copper coil with the same geometry at room temperature.