72
HeadSpi0.5s
Indications:
Spiral mode for routine head studies, e.g. tumors,
hydrocephalus, hemorrhaging, abnormalities, etc.
HeadSpi0.5s
kV 120
Effective mAs *
Slice collimation 1.5 mm
Slice width 4.0 mm
Feed/Rotation 12.2 mm
Rotation time 0.5 sec.
Kernel C30f
Increment 4.0 mm
Image order ca-cr
Contrast medium IV injection
Start delay exam dependent
Flow rate dependent upon needle size/Access site
Total amount 1–2 ml per kg of body weight
* The mAs should be adjusted to the age of the child.
* The conversion factor for an 8-week-old, and a scan
range of 90 mm was used.
** The conversion factor for a 7-year-old, 260 mAs and
a scan range of 110 mm was used.
Body Weight kV mAs CTDIwEffective dose
(mGy) (mSv)
< 6 months 120 90 17.1 Male: 1.7*
Female: 1.7*
6 months – 120 150 28.5
3 years
3 years – 120 220 41.8 Male: 4.4**
6 years Female: 4.3**
Children