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(A) The relationship between whole body MRI vs. muscle mass by D3‐creatine dilution (r = 0.868, P < 0.0001) and (B) between whole body DXA and D3‐creatine dilution (r = 0.745, P < 0.0001).37 The correlation in (A) passed through the origin, while in (B), DXA estimates of lean body mass was systematically greater than that of skeletal muscle mass by D3‐creatine dilution. DXA, dual X‐ray absorptiometry; MRI, magnetic resonance imaging.
