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pelvis · AP Axial
Pelvis Inlet & Outlet
Patient supine, MSP centred.
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AI Patient · KV Sir
How to perform this view
- 01
Lay patient supine, ASIS equidistant.
- 02
INLET: angle CR 40 deg caudad, centre at level of ASIS.
- 03
OUTLET: angle CR 30-45 deg cephalad (male 20-35), centre 5 cm distal to symphysis.
- 04
Expose each separately.
Anatomical & patient position
Patient: Patient supine, MSP centred.
Part: Pelvis not rotated; legs extended.
Central ray & centring point
Inlet 40 deg caudad at ASIS; outlet 30-45 deg cephalad at 5 cm below symphysis.
Exposure factors
kVp
80-90 kVp
mAs
20-30 mAs
SID
100 cm
IR size
35 x 43 cm landscape
Grid
Yes
Respiration
Suspended
Clinical indications
- Pelvic ring fractures (AP-posterior displacement on inlet)
- Superior/inferior displacement (outlet)
Contraindications & precautions
- Pregnancy (relative) - confirm LMP / 10-day rule, justify exposure and shield where possible
Structures shown & evaluation criteria
- Pelvic ring (inlet)
- Pubic and ischial rami elongated (outlet)