Abstract #4409
Optimal reconstruction using receive arrays for hyperpolarized 13 C cardiac imaging at 3T
William Dominguez-Viqueira 1 , Angus Z Lau 2 , Albert P Chen 3 , and Charles H Cunningham 1,4
1
Physical Sciences, Sunnybrook Research
Institute, Toronto, Ontario, Canada,
2
University
of Oxford, United Kingdom,
3
GE
healthcare, Toronto, Ontario, Canada,
4
Medical
Biophysics, University of Toronto, Toronto, Ontario,
Canada
Rapid multislice imaging of hyperpolarized 13C pyruvate
was demonstrated by using a single-shot spiral
pulse-sequence with up to 5-channel receiver-coils. SNR
and coverage can be increased by using multi-channel
reception as presented before; but final images are
biased by the coil sensitivity when a simple
sum-of-squares channel combination was used. In this
work coil sensitivity coefficients were numerically
calculated in Matlab and used for optimal linear
combination reconstruction with in vivo measurements.
SNR improvements of up to a 100 % in areas closer to the
base of the heart were demonstrated by using the optimal
reconstruction, as compared with sum-of-squares.
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