114
Abdomen
Note:
– In general, for abdominal studies such as liver, gall
bladder (query stones), pancreas, gastrointestinal
studies, focal lesion of the kidneys and CTA studies, it
is sufficient to use just water. Water is more effective
than positive oral contrast agent in depicting the
linings of the stomach & intestines in post enhance-
ment studies. In addition, the use of water will not
obscure the blood vessels thus allowing CTA proces-
sing to be performed easily afterwards.
– For patients with bowel obstruction, only water or
water-soluble contrast can be used. Barium suspension
is contraindicated.
• Be careful when examining pheochromocytoma
patients. Administration of an IV CM injection in such
cases may trigger a hypertensive crisis!
For more information regarding the general use
of drugs and doses including specific indications and
contraindications mentioned in this guide, please
refer to page 2.
• For Abdomen examination we recommend at least
120 kV.
For obese patients
– use at least 120 kV and effective mAs 300
– for a 0.75 mm slice collimation choose 140 kV and
at least effective mAs 200.
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