Recent improvements in CT software allow rapid and high-quality two-di
mensional reformatting of scans of the spine [1]. Reformatting involve
s computer interpolation of two-dimensional multislice images acquired
during routine axial CT scanning in order to generate a three-dimensi
onal volume of data. From this block of data, new images are created a
nd displayed in any desired plane. Reformatted images are acquired wit
hin minutes following axial CT scanning.