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Measurement of attenuation values. A, Measurement ROI (white border, diameter in black) for calculation attenuation values in the anterior part of the vertebral body using axial 10 mm average intensity projections. B, The ROI in A was standardized to one half of the superior-inferior vertebral body dimensions. C, Axial slices for measurement were ensured to be in equidistant localization to the inferior and superior endplates using a sagittal reformation as a reference.
