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Cardiac arrest: abdominal CT imaging features.

We report computed tomographic findings of two unusual cases of sudden cardiac arrest. The imaging features documented include reflux of contrast into the abdomen as indicated by opacification of renal veins, hepatic veins, inferior vena cava, and hepatic and renal parenchyma. The reflux of contrast into the portal vein in one patient has not been described in the literature. The thoracic findings were reflux of contrast into the coronary sinus, nonopacificaton of the left ventricle with intravenous contrast, and lack of cardiac motion artifact.