Table 1.
Clinical description of the analyzed group.
Fig 1.
Samples of a single MRI slice with contouring of the four segmented muscles (axial view).
Legend: Glut min–gluteus minimus muscle, Glut med–gluteus medius muscle, Glut max–gluteus maximus muscle, Pir–piriformis muscle. Muscles were contoured in ITK-SNAP where the structures were outlined slice-by-slice by pointing and clicking with a mouse. The program connected the consecutive points with lines.
Fig 2.
Sample of a single MRI slice with final segmentation of the four chosen muscles.
Legend: Glut min–gluteus minimus muscle, Glut med–gluteus medius muscle, Glut max–gluteus maximus muscle, Pir–piriformis muscle. All anatomical objects defined by closed contours were filled in by selected colors.
Table 2.
Differences in the frequency of LBLP patients with a smaller volume of the left muscles compared to the right muscles.
Table 3.
Comparison of the mean values for the four pelvic muscles volume (symptomatic v. non-symptomatic side of the LBLP group).
Table 4.
Differences in the frequency of healthy volunteers with a smaller volume of the left muscles compared to the right muscles.
Fig 3.
Overall scatter of volume measurements in [cm3] performed by two independent raters (1 and 2) in LBLP patients.
Fig 4.
Overall scatter of volume measurements in [cm3] performed by two independent raters (1 and 2) in healthy volunteers.
Table 5.
Concordance and intra-class correlations between volume measurements made by two independent raters (1 and 2) in LBLP patients and healthy volunteers.