TECHNIQUE OF LINEAR TOMOGRAPHY FOR THE PELVIC REGION OF THE HORSE

A method of linear tomography for the pelvic region of the horse is described. A custom-built unit was employed, and exposures of 140 kV and 400 mAs for three to four seconds were required in horses weighing approximately 450 kg. Animals were anesthetized and placed in lateral or dorsal recumbency. Radiographic quality of the lateral projection was considered unsatisfactory, but on ventrodorsal tomograms taken at an angle of swing of 10° or 20° most of the anatomic structures in the lumbar spine and pelvic girdle could be identified. The height of the plane of cut varied from 30 to 300 mm, according to anatomic location, but between animals the height of each structure was reasonably consistent.