Operating instructions

Lower Extremities
423
• The special kernels are mostly used for ”physical”
measurements with phantoms, e.g. for adjustment
procedures (S80s), for constancy and acceptance
tests (S80s, S90s), or for specification purposes
(S90s).
For special patient protocols, S80s and S90s are cho-
sen, e.g. for osteo (S80s).
• For very high sharpness we recommended the U70u,
U80u, U90u for bone studies. UHR mode has a max-
imum FoV of 300 mm.
It is mandatory to position the area of interest in the
center of the scan field. Use ExtrCombi mode when a
scan FoV > 25 cm is necessary.
• In case of 3D study only, the mAs value can be
reduced by 50%. Use kernel B10s and at least 50%
overlapping for image reconstruction.
If the Pelvis region is included in the scan range, we
recommend at least 120 kV.