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. 2006 Oct 21;12(39):6290–6298. doi: 10.3748/wjg.v12.i39.6290

Figure 1.

Figure 1

Diagram showing enhancement patterns of hepatic tumors in the arterial phase. A: Intratumoral vessels in the early arterial phase (a) with homogeneous enhancement in the late arterial phase (b) (pattern A1); B: Intratumoral vessels in the early arterial phase (a) with heterogeneous enhancement in the late arterial phase (b) (pattern A1); C: Intratumoral vessels without homogeneous or heterogeneous enhancement (pattern A2); D: Peritumoral vessels alone (pattern A3); E: Peripheral nodular enhancement without tumor vessels (pattern A4); F: No enhancement and no tumor vessels (pattern A5).