Fig. 5From: Methodological considerations in region of interest definitions for paraspinal muscles in axial MRIs of the lumbar spineBetween-rater error (Coefficient of Variation) decreased with increased left multifidus fCSA (a), left multifidus FSF (b), and left erector spinae FSF (c), for method 2 (blue). Between-rater error decreased with increased right erector spinae FSF (d) for method 1 (red)Back to article page