Kotzen L M, Balakumar K
Comput Radiol. 1982 Nov-Dec;6(6):371-6. doi: 10.1016/0730-4862(82)90008-7.
Range is a simple, technically reproducible, fast, comfortable and diagnostically reliable method for high resolution CT of the spine. The 5 mm slices at 3 mm intervals provide parallel overlapping slices which display the pathology in more than one slice, providing the abnormality is not seen only in the first or last cut at the L5-S1 or L4-L5 interspace, thus decreasing false positives due to artifact of normal anatomic structures.