Abstract #2438
Gradient-modulated PETRA
Naoharu Kobayashi 1 , Luning Wang 1 , and Michael Garwood 1
1
Center for Magnetic Resonance Research,
Department of Radiology, University of Minnesota,
Minneapolis, MN, United States
We introduce a novel PETRA technique with gradient
modulation (GM) which enables higher readout bandwidth
while keeping the missing center k-space region small.
GM enables use of higher readout bandwidth while keeping
excitation bandwidth relatively low, which reduces
off-resonance blurring in images. The proposed sequence
was evaluated by comparing PETRA techniques with and
without GM for an equine knee sample in a human 7T
scanner. GM-PETRA showed significantly less
off-resonance blurring compared to the conventional
PETRA technique under the same excitation bandwidth
condition. GM can improve the PETRA image quality
without any special hardware modification of clinical
scanners.
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