39
Children
Tips
• Children, who are more than 6 years old, should
be scanned with an adult protocol as the skull by this
time is fully grown.
• The UHR mode requires a 250 mm scan FOV. It is
mandatory to position the patient in the center of
the scan FOV.
• When soft tissue is of interest, use kernel U30 for
image reconstruction.
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 conversion factor for an 8-week-old,
and a scan range of 30 mm was used.
** The conversion factor for a 7-year-old, 100 mAs
and a scan range of 40 mm was used.
Age kV mAs CTDI
w
Effective dose
(mGy) (mSv)
< 3 years 120 40 13.2 Male: 0.5*
Female: 0.5*
3 years – 120 60 19.8 Male: 0.7**
6 years Female: 0.7**
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