Table 4. CT enterography.

Advantages

Can detect source in obscure bleed

Can detect bowel pathologies even when not actively bleeding

Can help evaluate bowel wall and abdominal vessels simultaneously

Disadvantages

Not good for acutely bleeding unstable patients

Non-therapeutic

Ionizating radiation

Requires proper technique and good bowel distention

Recommendation

Initial diagnostic modality for LGI small bowel bleed with pre-existing bowel pathology

In patients with negative capsule endoscopy to look for small or large bowel source