ä Opportunistic use of computed tomography (CT) allows assessment of bone status from studies obtained for other purposes. ä The linear x-ray attenuation coefficient is known as the Hounsfield unit (HU). ä HU values can be determined for any region of interest using standard imaging software. ä HU values strongly correlate with bone mineral density. ä A threshold of <135 HU for the L1 vertebral body indicates a risk for osteoporosis. ä HU values have been used to assess other bone regions, including the wrist, proximal and distal end of the femur, and sacrum, to predict future fracture and the presence of osteoporosis. ä Opportunistic use of CT aids in the identification of patients who are not otherwise suspected to be at risk for osteoporosis.
|Original language||English (US)|
|Number of pages||9|
|Journal||Journal of Bone and Joint Surgery - American Volume|
|State||Published - 2018|
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Copyright © 2018 By The Journal of Bone and Joint Surgery, Incorporated