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Radiology, Vol 198, 781-784, Copyright © 1996 by Radiological Society of North America

ARTICLES

Osteopenia in children: CT assessment

A Kovanlikaya, ML Loro, TN Hangartner, RA Reynolds, TF Roe and V Gilsanz
Department of Radiology, Childrens Hospital Los Angeles, California 90027, USA.

PURPOSE: To assess the value of computed tomographic (CT) measurements of cortical bone in children with osteopenia. MATERIALS AND METHODS: The area and density of cortical bone in the midshaft of the femur were measured with CT in 37 children with osteopenia. Twenty had osteoporosis in one leg, nine had osteogenesis imperfecta (IO), and eight had vitamin D-resistant rickets. Comparisons were made between the CT measurements of the normal and abnormal extremities and between patients with OI or rickets and a group of 17 healthy, matched children. RESULTS: Sex, age, height, and weight did not influence cortical bone density; values were similar for the 17 control subjects. Children with osteoporosis and IO had reduced bone area but normal bone density. Compared with control subjects, patients with rickets had similar bone area but reduced bone density (869 mg/cm3 K2HPO4 +/- 79 [standard deviation] vs 1,132 mg/cm3 K2HPO4 +/- 41). CONCLUSION: CT measurements of area and density of cortical bone aided the differentiation of the various disorders that cause osteopenia in children.


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