Helical volume computed tomography (CT) involves continuous patient translation during x-ray source rotation and scan data acquisition. As a result, high-quality three-dimensional images can be produced from the continuous volume data sets in a relatively short period of time. Helical CT scanning and three-dimensional surface reconstruction of the spinal lesions were performed. In fracture and dislocation of the spine, three-dimensional CT provides excellent images of posterior aspects of the lesion and demonstrates sharp sagittal images of vertebral fractures compared with magnetic resonance imaging. In degenerative spinal disorders, three-dimensional CT is helpful in evaluating patients with ossification or calcification of ligaments. Three-dimensional images with helical volume scanning may be useful for the diagnosis of spinal disorders.
