31 P MRSI of the brain at 3T with an improved 8-channel receive array and Whitened Singular Value Decomposition for optimal combination of 31 P array signals
M.J. van Uden 1 , A. Rijpma 2,3 , C.T. Rodgers 4 , Bart Philips 1 , T.W.J. Scheenen 1 , and A. Heerschap 1
Department of Radiology and Nuclear
Medicine, Radboud University Medical Center, Nijmegen,
of Geriatric Medicine, Radboud University Medical
Center, Gelderland, Netherlands,
Alzheimer Center, Radboud University Medical Center,
Cardiovascular Medicine, University of Oxford, Oxford,
P MRSI provides valuable information on
metabolism in neurological diseases such as Alzheimer
and brain tumors, but suffers from a relatively low SNR.
We present an 8-channel receive array insert in a
send birdcage coil for improved
MRSI of the brain. For the addition of the array coil
signals we compared the Time-Domain and Whitened
Singular Value Decomposition methods and observed a
better SNR for the latter method. This method together
with the improved head array insert resulted in about a
4fold increase in the SNR of the
MR spectra compared to the birdcage coil.
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