位於上腹部的腹主動脈、下腔靜脈與肝門靜脈等血管和它們的主要分枝、會合枝，是臨床醫學影像 常見的重要結構。但對於醫事放射科系學生，乃至於臨床醫事放射師、及其他相關醫療從業人員，往往只 能由固定的影像截取角度和位置，死記成像的結果，卻無法靈活應用。本文以分析這些重要血管的基本解 剖走向，並說明彼此交會情形，再運用自我雙手模擬，建立動、靜脈立體佈局的三度空間觀念。依此邏輯， 不論是軸位取像，或是矢狀、冠狀影像，甚至於其他成像角度，都能夠對其在於影像呈現的變化上，有更 為專業判斷的依據。

The upper abdomen which contains large bloods vessels，digestive tract，liver，pancreas，spleen，and kidneys is common in clinical medical images. It is difficult for medical students，radiological technicians，and other people who work in hospital to realize the signs of blood vessels of this region from medical images. This article analyzes the basic dissection trend of these trunks. Finally，we utilize the self-both hands simulation to establish three-dimensional layout of these blood vessels. According to these conceptions，we can figure out the structure signs basically from the axial pictures，sagittal planes，or coronal sections.