A triple-phase CT scan of the abdomen is a contrast-enhanced CT study performed in three timed phases—arterial, portal venous, and delayed—after intravenous contrast injection. Each phase shows different blood flow and tissue enhancement, improving detection and characterization of liver lesions, vascular abnormalities, tumors, and trauma. Typical timings: arterial (~20–30s), portal venous (~60–70s), delayed (several minutes).

Triple‑phase CT acquires images in unenhanced, arterial and portal‑venous (sometimes delayed) contrast phases to capture lesion enhancement patterns. It improves detection, characterization and staging of liver, pancreatic, renal and vascular abnormalities, distinguishes hypervascular tumors (e.g., HCC) from benign lesions, guides surgical or interventional planning, and increases sensitivity for small lesions, active bleeding, or vascular invasion.

Costs vary widely by country, facility and whether contrast/radiologist fees are included. Typical ranges: India ~INR 2,500–10,000; United States ~$500–3,000 (much higher if uninsured); UK private ~£250–£1,000 — NHS covers it for eligible patients. Always confirm exact price, fasting/contrast costs, and insurance preauthorization with your local imaging center before scheduling.

A three-phase CT typically includes: 1) Unenhanced (pre-contrast) — baseline images before contrast; 2) Arterial (early post-contrast) — taken soon after contrast bolus to highlight arteries and hypervascular lesions; 3) Venous/portal-venous (late post-contrast) — obtained later to opacify veins, liver parenchyma and detect lesions or active bleeding. Timing optimizes lesion detection and characterization.

A triple-phase CT is quick: the scans themselves take only a few minutes, with arterial imaging about 20–30 seconds after contrast, portal‑venous about 60–70 seconds, and a delayed phase around 3–5 minutes. Including IV insertion, contrast administration and setup/recovery, plan on roughly 20–45 minutes for the whole appointment. Time can vary by center and patient needs.

To prepare for a triple‑phase CT scan: follow fasting instructions (usually 4–6 hours), hydrate well, and avoid alcohol. Tell staff about allergies, kidney problems, pregnancy, and all medications; you may need a blood test for kidney function and to withhold metformin for 48 hours. Wear metal‑free clothing, bring referral/ID, and expect an IV line for contrast and a consent discussion on arrival.