Muscle cross-sectional area
quadriceps femoris muscle
BEST
The main outcome of this investigation was the quadriceps femoris muscle cross-sectional area (CSA), assessed by MRI data sets acquired with a 3.0-T scanner (Achieva; Phillips-Medical-Systems, Best, the Netherlands). A T1-weighted turbo-spin-echo sequence (echo time, 15 ms; section thickness, 10 mm; in-plane resolution, 0.78 mmMuscle segmentation in MR images before and after training intervention. T1-weighted MR images with segmentation of the quadriceps femoris muscle (patient’s right side in purple and left side in pink) at baseline (a; top) and after the exercise training intervention (b; bottom). The femur, fatty, and connective tissues as well as vessels were excluded from the segmentation, but fascia lata and beginning rectus tendon were included. This technique and the slice-selection have been shown to adequately represent changes in extensor muscle volume (