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Fig. 2. —Graph shows comparison of bone marrow fat (percentage fat fraction ff) and bone mineral density (BMD [g/cm²]) of lumbar vertebrae from 26 subjects. Each data point represents an average value of BMF and BMD for 26 lumbar spines (71 vertebrae). Data points in the right box (dotted lines) represent subjects with BMD in the osteopenia range (0.75–0.9 g/cm²). Data points in left box represent BMD less than 0.75 g/cm² and signify osteoporosis. Square gray boxes = subjects with weakened vertebrae, diamond-shaped black boxes = subjects with normal vertebrae.