Fig. 3From: Evaluation of bone mineral density in adolescent idiopathic scoliosis using a three-dimensional finite element model: a retrospective studya Definition of ROIs on a 2D slice (note: densities are presented in a rainbow plot) and b calculation of ROI densities by node densities of the 2D surface (slice) mesh (note that solid and hollow nodes indicate high and low densities, respectively)Back to article page