van Heteren J G, James T W, Bourne L C
Toshiba America MRI, Inc., South San Francisco, California.
Magn Reson Med. 1994 Sep;32(3):396-400. doi: 10.1002/mrm.1910320315.
We have built and tested a thin-film high temperature superconducting (HTS) surface coil for MRI at 0.064T. When placed as close as possible to a conductive sample, the 6.7-cm outer diameter HTS coil had a measured signal-to-noise ratio (SNR) 1.8 times higher than a room temperature copper coil of similar size and location. Our results predict that in some cases, SNR gains of about a factor of 2 can be attained in low-field MRI systems by substituting HTS surface coils for copper coils.
