127
Pelvis
Hints in General
• Topogram: AP, 512 mm.
• Patient positioning:
Patient lying in supine position, arms positioned
comfortably above the head in the head-arm rest,
lower legs supported.
• A breathing command is not necessarily required
for the pelvic examination, since respiration does not
negatively influence this region.
• Rectal contrast medium administration:
Rectal contrast media is usually required to delineate
the rectum and sigmoid colon, if lower pelvic mass
or pathology is suspected. In some cases, air may be
substituted for a positive contrast agent. The use of
vaginal tampon may be helpful in adult female patients
with suspected pelvis pathology.
• For Pelvis 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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