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Fig. 8 —Schematic representations of thrombus patterns observed on contrast-enhanced longitudinal sonography scan (A) of venous vessel and orthogonal sonography scan (B) of venous vessel. = Pattern 2 can evolve into pattern 1, 3, or 4 during portal and late phases. White lines into thrombus represent visible arterial neovascularization. NO = nonocclusive thrombi, O = occlusive thrombi.