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正常鞍区冠状面CT断层解剖学研究 |
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于富华 许建荣 陈松果 刘延平 王海燕 马勇
【摘要】 目的 研究正常成人鞍区冠状面CT断层解剖学特征。 方法 利用全身CT设备，对167例正常成人进行了鞍区冠状面薄层CT增强扫描，层厚1.5～2mm。 结果 正常垂体高度为2.6～8.4mm，平均4.6±2.1mm，宽度为8～21mm，平均13.8±4.1mm，50岁以后垂体高度稍有降低；垂体上缘形态以凹陷型居多(43%)、平坦型次之(36%)，隆起型较少(21%)；26%正常垂体柄有轻度倾斜；海绵窦大小、形态变化较大，增强后其密度高于垂体；鞍底有51%呈凹陷型，45%呈平坦型，4%呈隆起型，有50例(30%)正常鞍底骨质变薄、密度减低。 结论 冠状面薄层CT扫描可以清晰显示鞍区的解剖结构，正常鞍区解剖变异较大，须综合观察才能做出正确判断。
【关键词】 鞍区；垂体；断层解剖；CT
【中图分类号】 Q814.42 【文献标识码】 A
【文章编号】 0529-1356(2000)02-141
SECTONAL ANATOMY OF NORMAL SELLA TURCICA
REGION ON THE CORONAL CT IMAGING
YU Fu-hua，CHEN Song-guo,WANG Hai-yan,MA Yong
(Department of Radiology,Taishan Medical College, Taian 271000,China;
XU Jian-rong，LIU Yan-ping
（Department of Radiology, Shanghai the No.6 Hospital, Shanghai 200234,China）
【Abstract】 Objective To study the appearances of sectional anatomy of normal sella turcica region on the coronal CT imaging. Methods Normal sella turcia region of 167 cases were examined with whole-body CT equipment. The thin contrast CT scan was performed on coronal section, with the thinness of 1.5-2.0mm. Results The average height of the hypophysis(pituitary gland) was 4.6±2.1mm, with the range between 2.6-8.4mm.The length was 13.8±4.1mm. The height of the hypophysis was slightly decreased after the age over 50 years old. The shape of superior surface of the hypophysis usually was concave(43%), flat(35%) or convax(21%). The infundibulum may be slightly off midline in 26% normal cases. The shape and size of cavernous sinus usually were variable, the density of cavernous sinus was higher than that of the hypophysis on contrast enhancement CT imaging. Sellar floor was concave in 51% cases, and flat in 45% cases, but convax in only 4% cases. Thinning and lower density of normal sellar floor can be seen in 50(3%) cases. Conclusions Coronal thin CT scan is an effective model in displaying the sectional anatomy of sella tur[1] [2] [3] 下一页
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