99
Neck
Hints in General
1. Topogram: Lateral, 256 mm.
2. Patient positioning:
Patient lying in supine position, hyperextend neck
slightly, secure head well in head cradle.
3. Patient respiratory instruction:
do not breathe, do not swallow.
4. For image reconstruction of bone structure, use
kernel B60.
5. In case of 3D study only, the mAs value can be
reduced by 50%. Use kernel B10 and 50% over-
lapping for image reconstruction.
6. For examinations in the Neck/Shoulder region at
least 120 kV is recommendable for optimized image
quality. For large patients 140 kV is advisable.