RadteraXR Abdomen (Supine KUB)
XRNo contrastAbdomen & Pelvis
Indications
- Abdominal pain (non-acute)
- Assessment of bowel gas pattern
- Suspected constipation/stool burden
- Localization of catheters, stents, or foreign bodies
- Renal/ureteral calculi (KUB)
- Pre-/post-procedure scout
Patient prep
- Remove clothing with radiopaque fasteners over abdomen; gown
- Usually no preparation required for routine KUB
Contrast
None / non-contrast
Technique
- Supine AP, patient recumbent with midsagittal plane centered to midline of table/IR
- CR perpendicular to level of iliac crests, centered to midline
- SID 40 inches (100 cm); grid
- kVp ~70-80
- Expose on suspended expiration
Series / Sequences
| # | Series / Sequence | Plane | Notes |
|---|---|---|---|
| 1 | AP supine (KUB) | Frontal (coronal) | CR perpendicular at iliac crest; include symphysis pubis inferiorly; for tall patients use second image of upper abdomen including diaphragm |
Key points
- KUB = Kidneys, Ureters, Bladder; ensure symphysis pubis included to cover bladder
- Lower image to include symphysis pubis; if needed add a second AP centered higher to include diaphragm
- Center higher (~2 inches above crest) on hypersthenic patients
- Suspended expiration relaxes abdominal wall
References
• Bontrager's Handbook - Abdomen
• Merrill's Atlas Vol 2 - Abdomen
• Radiopaedia: Abdomen (AP supine view) link
• Merrill's Atlas Vol 2 - Abdomen
• Radiopaedia: Abdomen (AP supine view) link
Source: Researched — verify against your institution
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Reference template — verify and adapt to your scanner, vendor and institution before clinical use. Not a substitute for clinical judgment.