Importance of Supine Rest Period before Imaging for Thigh Muscle Volume Quantification
Vijay Shah 1 , Therese Crilly 1 , Larry Molinelli 1 , William Badger 2 , and Jon Riek 1
VirtualScopics, Inc., Rochester, NY, United
of Rochester Medical Center, Rochester, NY, United
This study aimed to evaluate the influence of supine
rest on thigh muscle volume in a healthy volunteer.
Dynamic T1-weighted MR images were acquired in the
mid-thigh region for 30 minutes. On average, muscle
volume in the mid-thigh region decreased by 1.21%. The
average coefficient-of-variation of two consecutive
acquisitions was 0.15%, indicating that the measurement
technique should be sensitive to changes in volume of
less than 1%. At least 15 minutes of supine rest prior
to positioning on the table may help to detect smaller
changes in the thigh muscle volume by eliminating
variability that could be introduced by redistribution
of fluid in the muscles when posture is changed.
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