an intersection or crossing of two tracts in the form of the letter X
造句
用作名詞(n.)
There is mass effect with superior displacement of the optic chiasm. 雙側視交叉上抬。
Visual field changes suggested a mass within the left optic nerve extending its compression across the chiasm and encroaching on the left optic tract. 連續的視野變化顯示視傳導路徑前部有腫瘤壓迫現象，并且向原先定位的左側視神經迅速地朝視交叉和視徑移轉。