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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: J Bone Miner Res. 2011 Sep;26(9):2194–2203. doi: 10.1002/jbmr.428

Figure 2. Normal and abnormal L3 vertebral attenuation measurements using the simple ROI method.

Figure 2

A. Non-angled transverse CTC image with vertebral ROI at the L3 level shows a trabecular attenuation of 204.5 HU, well above the 145 HU level-specific threshold for 100% osteoporosis sensitivity (Table 1). L-spine DXA T-score was 0.6.

B. L3 vertebral ROI shows an attenuation of 80.5 HU in a patient with osteoporosis at DXA (L-spine T-score=−2.9), which is well below the 145 HU threshold.