Thin film high temperature superconducting RF coils for low field MRI.
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.
van Heteren
J G
JG
Toshiba America MRI, Inc., South San Francisco, California.
James
T W
TW
Bourne
L C
LC
D000537:Aluminum Oxide / Q000737:chemistry; D016477:Artifacts; D003300:Copper / Q000737:chemistry; D017097:Electric Impedance; D004574:Electromagnetic Fields; D004867:Equipment Design; D005123:Eye / Q000033:anatomy & histology; D006358:Hot Temperature; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation*; D007811:Lanthanum / Q000737:chemistry; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008280:Magnetics; D008961:Models, Structural; D009584:Nitrogen; D013499:Surface Properties; D013696:Temperature; D013793:Thallium / Q000737:chemistry
D007811:Lanthanum; D003300:Copper; D013793:Thallium; D000537:Aluminum Oxide; D009584:Nitrogen