CT · Abdomen
CT — Abdomen & pelvis (multiphase)
Indication
Characterisation of liver/pancreatic lesions, GI bleeding, haematuria (urography), staging.
Contrast
IV iodinated contrast; phases selected by indication (see below). Oral/rectal contrast as protocoled.
Sequences & planes
| Seq. | Plane | |
|---|---|---|
| Non-contrast | Axial | calcium/calculi, baseline |
| Late arterial | Axial | ~35 s (HCC, hypervascular) |
| Portal venous | Axial | ~70 s |
| Delayed/excretory | Axial | ~3–10 min (cholangiocarcinoma, urography) |
Planning notes
- Liver lesion protocol: non-contrast + late arterial + portal venous (+ delayed).
- Reduce phases to limit dose when a full multiphase study is not required.
References
Educational reference only — verify against current guidelines and adapt to your institution and equipment. Not medical advice.