A triple-phase CT abdomen is a multiphase CT with sequential scans after intravenous contrast: non-contrast, arterial-phase (early post-contrast) and portal-venous or delayed phases. It characterizes liver lesions, vascular anatomy, tumors, infection and trauma by showing enhancement patterns over time. The scan requires IV contrast, timed breath-holds, and carries small risks from radiation and contrast-related kidney or allergic effects.

The three CT scan phases are: 1) Non-contrast (pre-contrast) — baseline imaging to detect calcification, hemorrhage or fat. 2) Arterial phase (about 20 to 40 seconds after contrast) — visualizes arteries and hypervascular lesions. 3) Venous/portal venous phase (about 60 to 70 seconds) — optimal for parenchymal organs, liver lesions and metastases.

Costs vary by country and facility. In India, a triple‑phase liver CT typically ranges Rs 3,000–10,000; in the UK, NHS covers it but private scans cost about £200–£800; in the US, out‑of‑pocket or uninsured prices generally run roughly $500–$3,000 (higher at some centers). Final price depends on contrast use, radiologist fees, and location.

Triple-phase CT acquires arterial, portal venous, and delayed images to capture different contrast-enhancement phases. It improves detection and characterization of liver lesions (e.g., hepatocellular carcinoma), identifies active bleeding or vascular injury, maps vascular anatomy, and assesses tumor enhancement patterns and perfusion. This multiphase approach increases sensitivity and specificity for diagnosis, staging, and preoperative planning.

A triple‑phase CT (non‑contrast, arterial, portal venous/delayed) typically requires only a few minutes of actual scanning — each phase is captured within seconds and separated by short timed delays (e.g., ~20–30s arterial, ~60–70s portal venous; some protocols include a 3–5 min delayed scan). Including IV contrast injection, positioning and brief monitoring, expect about 20–40 minutes total appointment time.

To prepare for a triple‑phase CT: fast for 4–6 hours, stay well hydrated, and wear loose clothing without metal. Tell staff if you’re pregnant, have an iodine/contrast allergy, asthma, or kidney disease; bring recent kidney function results. You will need an IV cannula for contrast and may be advised to stop metformin for 48 hours afterward. Bring prior imaging and ID.