User Guide

Spine
133
Hints in General
• Topogram: Lateral, 512 mm for thoracic and lumbar
spine and 256 mm for the C-spine.
• Patient positioning for thoracic and lumbar spine
studies:
Patient lying in supine position, arms positioned
comfortably above the head in the head-arm rest,
lower legs supported.
• Patient positioning for cervical spine studies:
Patient lying in supine position, hyperextend neck
slightly, secure head well in head holder.
– Patient respiratory instruction: do not breathe, do
not swallow.
Any possible injuries to the spinal column should be
determined before beginning the examination and
taken into account when repositioning the patient.
Hints
• In case of 3D study only, images should be recon-
structed with at least 50% overlap in image recon-
struction and kernel B20s.
• In case of SSD study only, mAs value can be reduced
by 50%. Use kernel B20s and 50% overlap in image
reconstruction.
• For lumbar studies, place a cushion under the
patient’s knees. This will reduce the curve in the
spine and also make the patient more comfortable.
• For image reconstruction of bone studies, use kernel
B60.
C2-025.630.01.01.02_APPLICATIONGUIDE_SPIRIT.book Page 133 Friday, April 8, 2005 9:55 AM