- The process of producing a picture showing human body organs in cross section by first electronically detecting the variation in X-ray transmission through the body section at different angles, and then using this information in a digital computer to reconstruct the X-ray absorption of the tissues at an array of points representing the cross section.; 用計(jì)算機(jī)產(chǎn)生一幅表示人體器官斷層圖的處理方法,首先用電子技術(shù)測試X射線在某一斷面上從不同角度穿過人體時(shí) 所產(chǎn)生的變化;然后將此信息送入計(jì)算機(jī)以重構(gòu)X射線穿過該斷面薄層任一點(diǎn)時(shí)的吸收情況, 以表示該斷面。
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