Siemens EMOTION 16-Jun - Manual (Page 515)

Children
515
Head Kernels
The endings “s” or “f” depend on the rotation time.
• For head scans of small children, the kernels C20s,
C30s (for example, for soft tissue studies) and C60s
(for example, for sinuses are provided) should be
chosen instead of the ”adult” head kernels H20s,
H30s and H60s.
• For soft tissue head studies, the standard kernel is
H40s; softer images are obtained with H30s or H20s,
H10s, sharper images with H50s. The kernels H21s,
H31s, H41s yield the same visual sharpness as H20s,
H30s, H40s, the image appearance, however, is
more agreeable due to a ”fine-grained” noise struc-
ture; quite often, the low contrast detectability is
improved by using H31s, H 41s instead of H30s,
H40s.
• For the standard head protocols, we propose C20s
and C30s.
• High resolution head studies should be performed
with H60s, H70s (for example, for dental and
sinuses) and H80s, H90s (for example, inner ear).