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The study highlighted the potential of VEGFR2-targeted USMI as an effective monitoring tool for liver allograft fibrosis.

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Portal vein gas is a rare imaging finding and a concomitant sign of abdominal disease. Here, we report a 64-year-old man with an emphasis on contrast-enhanced ultrasound for describing the findings for portal vein gas and evaluating liver blood perfusion. Ultrasonography is a favorable imaging modality for the rapid bedside evaluation and monitoring of portal vein gas in the emergency room.