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abdomen · AP Erect
Abdomen AP Erect
Patient standing or sitting with back against vertical Bucky.
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AI Patient · KV Sir
How to perform this view
- 01
Patient should be upright at least 5 minutes (10-20 ideally) before exposure.
- 02
Stand patient with back against chest stand.
- 03
Centre MSP, top of IR at armpit level to include diaphragm.
- 04
CR 5 cm above iliac crest.
- 05
Expose on expiration.
Anatomical & patient position
Patient: Patient standing or sitting with back against vertical Bucky.
Part: MSP centred to IR; arms at sides; no rotation.
Central ray & centring point
Horizontal, perpendicular to IR, 5 cm above iliac crests (to include diaphragm).
Exposure factors
kVp
75-85 kVp
mAs
20-30 mAs
SID
100 cm
IR size
35 x 43 cm portrait
Grid
Yes
Respiration
Suspended expiration
Clinical indications
- Air-fluid levels in bowel obstruction
- Free intraperitoneal air (pneumoperitoneum)
Contraindications & precautions
- Pregnancy (relative) - confirm LMP / 10-day rule, justify exposure and shield where possible
- Haemodynamically unstable or unable-to-stand patient (perform supine/AP alternative instead) - do left lateral decubitus
Structures shown & evaluation criteria
- Both hemidiaphragms
- Air-fluid levels
- Free air under diaphragm