Title :
Electronics for a high temperature superconducting receiver system for magnetic resonance microimaging
Author :
Black, R.D. ; Roemer, P.B. ; Mueller, O.M.
Author_Institution :
Gen. Electr. Corp. Res. & Dev. Center, Schenectady, NY, USA
Abstract :
Describes an MRI (magnetic resonance imaging) receiver system that incorporates a high temperature superconducting (HTS) resonator as a surface coil. Techniques for measuring the Q of the HTS resonator in a 7 Tesla field are discussed. A method for coupling a room temperature copper resonant circuit to the HTS element is covered, and it is shown that such a coupling scheme preserves the signal-to-noise gain afforded by the HTS coil. A preamplifier with a noise figure of <0.15 dB at 300 MHz is described.
Keywords :
biomedical NMR; biomedical electronics; high-temperature superconductors; 300 MHz; 7 T; Cu; Q measurement techniques; coupling scheme; high temperature superconducting receiver system; magnetic resonance imaging; magnetic resonance microimaging; medical electronics; noise figure; preamplifier; room temperature copper resonant circuit; signal-to-noise gain; surface coil; Copper; Coupling circuits; High temperature superconductors; Magnetic field measurement; Magnetic resonance; Magnetic resonance imaging; Preamplifiers; Q measurement; RLC circuits; Superconducting coils; Electric Impedance; Electronics; Equipment Design; Heat; Magnetic Resonance Imaging;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
