Daniels D L, Haughton V M, Williams A L, Gager W E, Berns T F
Radiology. 1980 Oct;137(1 Pt 1):123-7. doi: 10.1148/radiology.137.1.7422833.
Using a CT/T 8800 scanner, axial and coronal images of the optic chiasm were obtained in a cadaver, 41 normal individuals, and six patients with symptoms of chiasmal glioma. The size and shape of each chiasm were determined. The normal chiasm appeared to be U- or boomerang-shaped in axial sections, and U- or dumbell-shaped in coronal sections. The average normal chiasm diameters were 1.8 cm (transverse) by 0.8 cm (anteroposterior) by 0.4 cm (vertical). The chiasm was globular and larger than 0.6 cm (vertical dimension) in all cases of chiasmal glioma. The abnormal chiasm can be distinguished accurately from the normal chiasm by computed tomography.
使用CT/T 8800扫描仪，在一具尸体、41名正常个体以及6名有视交叉胶质瘤症状的患者身上获取了视交叉的轴向和冠状图像。确定了每个视交叉的大小和形状。正常视交叉在轴向切片中呈U形或回旋镖形，在冠状切片中呈U形或哑铃形。正常视交叉的平均直径为横向1.8厘米、前后径0.8厘米、垂直径0.4厘米。在所有视交叉胶质瘤病例中，视交叉呈球形且垂直尺寸大于0.6厘米。通过计算机断层扫描可以准确地将异常视交叉与正常视交叉区分开来。
