Abstract #1610
Improved Reconstruction of Free-Breathing Abdominal PROPELLER MRI: A Preliminary Study
Dallas C Turley 1 , Michael Schr 2 , and James G Pipe 1
1
Neuroimaging Research, Barrow Neurological
Institute, Phoenix, AZ, United States,
2
Philips
Healthcare, Cleveland, OH, United States
Abdominal MRI presents many imaging challenges due to
non rigid-body motion of respiration. Continuous data
acquisition during free breathing is fastest and most
comfortable for patients but respiratory motion must be
corrected in order to obtain high quality images. In a
T2-weighted free-breathing PROPELLER exam, instructing
patients to pause 2-3 seconds after exhalation improved
image sharpness without adding substantial patient
discomfort. Respiratory motion was captured with bellows
and the waveform was used as additional data to weight
PROPELLER reconstruction in favor of blades collected
during end-exhalation, reducing the effects of
respiratory motion.
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