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Newman与Cohen二氏首先于1949午报告一种簡單的“門靜脉循环时間”測定方法,用以了解門靜脉系統的循环狀况。据称在門靜脉性肝硬化即使在代偿期本試驗亦有异常結果。此后Giges与Teschan二氏于1952年应用本試驗于7例有門靜脉高压与食道靜脉曲張的肝硬
Newman and Cohen first reported in 1949 a simple “portal vein cycle time” assay to understand the circulatory status of the portal system. Allegedly in portal venous cirrhosis even in the compensatory period of this test also have abnormal results. Since then Giges and Teschan two in 1952 the application of this test in 7 patients with portal hypertension and esophageal varices of liver cirrhosis