Cryogenic Receive-only 7 Tesla Coil for MRI of Hyperpolarized 13C
Jarek Wosik 1,2 , Krzysztof Nesteruk 3 , I-Chih Tan 4 , Kuang Qin 1 , and James A. Bankson 5
Electrical and Computer Engineering,
University of Houston, Houston, Texas, United States,
Center for Superconductivity, University of Houston,
Houston, Texas, United States,
of Physics Polish Academy of Sciences, Warsaw, Poland,
for Molecular Imaging, The University of Texas Health
Science Center, Houston, Texas, United States,
of Imaging Physics, The University of Texas M. D.
Anderson Cancer Center, Houston, Texas, United States
We report on a planar 75-MHz cryogenic (both copper and
superconducting) coils for hyperpolarized 13C MRI at 7T.
In principle, cryogenic and especially superconducting
receive coils can provide very significant SNR gain for
13C detection at 7 T, due to lower than for protons
Larmor frequency of 13C nuclei and resulting lower body
loss compared to 1H. The double-sided coils were
fabricated by patterning Cu and YBCO on laminate and
0.33 mm thick sapphire substrates, respectively.
Practical limits of SNR gains of 60K 75 MHz 13C coils
and their maximum sizes to-be-used, were analyzed and
compared with those of 1H 300 MHz coils.
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