Screening and early diagnosis of osteoporosis through X-ray and ultrasound based techniques

Figure 2 Dual X-ray absorptiometry examination on reference sites. A: Dual X-ray absorptiometry (DXA) scan of the femoral neck; B: DXA examination of the lumbar spine with analysis of the vertebral bodies (L1-L4); C: A graphic curve of T-score values normalized for age. The green area of the panel indicates normal T- score values (≥ -1.0), the yellow one indicates osteopenia (< -1.0 but > -2.5) and the red area indicates osteoporosis (≤ 2.5). BMD: Bone mineral density.