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Validation of radiographic metrics for DE. (a) Validation of Oosterho's method, with positive findings for DE. (b) Validation of Ahn's method, with positive findings for DE. (c) Validation of Söylen's method, with positive findings for DE. DSD: Disk space diameter; VBD: Vertebral body diameter; AVG: Average; TW*SW: Transverse width *sagittal width
