Abstract: In pediatric diagnostic imaging, a patient is seated upright on a patient couch (10) of a large bore CT scanner. The patient is seated such that coronal or near coronal slices are taken as opposed to axial slices as in typical CT scanners. The patient is stationarily supported in this position during imaging. A back support member (14) supports the back and side restraint panels (18) limit lateral movement. Restraint straps (30) further secure selected parts of the patient. The angle of the support member (14) is adjusted to conform with a selected imaging region by angle adjustment grooves (20). A removable telescopic head rest (40) positions the patient leaning forward. The back support (14), the side restraint panels (18), and the headrest (40) are all constructed of radiolucent materials.