Estimation of bone mineral density with hounsfield unit measurement.

ABSTRACT

OBJECTIVE: Although dual-energy x-ray absorptiometry (DXA) remains the gold standard for the measurement of bone mineral density (BMD), degenerative spine and spinal instrumentation yields inaccurate results, warranting the need for optional methods. METHODS: Surgical options depend on the BMD of the patients, and to accommodate this need, we compared Hounsfield unit (HU) measurements obtained from computed tomography (CT) scans with the T-scores obtained from DXA scans to inquire whether HU measurements can screen for BMD. In this study, we also evaluated the relationship between body mass index and spontaneous fractures. RESULTS: Based on the findings described in this study, we provide evidence that HU measurements obtained from CT scans can predict BMD. CONCLUSIONS: This, therefore, allows HU measurements to be used as an effective diagnostic method in lieu of DXA scans when deciding on appropriate management of therapy for patients with spinal instrumentation or degenerative spines.