Operating instructions

316
Spine
Body Kernels
The endings “s” or “f” depend on the rotation time.
• As standard kernels for body tissue studies B30s or
B40s are recommended; softer images are obtained
with B20s or B10s (extremely soft). The kernels B31s
or B41s have about the same visual sharpness as B30s,
respectively, B40s, the image appearance, however,
is more agreeable due to a ”fine-grained” noise
structure; quite often, the low contrast detectability
is improved by using B31s, B41s instead of B30s, B40s.
• For higher sharpness, as is required e.g. in patient
protocols for cervical spine, shoulder, extremities,
thorax, the kernels B50s, B60s, B70s, B80s are
available.
• 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 chosen,
e.g. for osteo (S80s).