- 期刊
- OpenAccess
Computed Tomography of the Normal Pituitary Gland and Fossa in Chinese
中國人正常腦下垂體及蝶鞍之電腦斷層攝影
摘要
吾等回溯67例腦下垂體之電腦斷層攝影，含橫切面及冠狀切面。窗幅由200至300，中心為35。彼等在臨床上均無任何腦下垂體病變的症狀。在冠狀斷面腦下垂體柄的切面上，腦下垂體的平均高度及寬度為4.1±1.3mm和13.7±1.7mm。在靜脈注入造影劑後，大部份的腦下垂體呈不均勻的增強顯影(82.1%)，均勻增強顯影的有17.9%。腦下垂體上緣呈下凹者有29位(43.3%)，水平的有31位(43.6%)，上凸者只有7位(10.6%)。腦下垂體窩底部皀形狀以水平及下凹者最多，二者約佔全數病例之3/4。大部份的病例，在橫切面鞍背部的平面上都能清晰可見腦下垂體柄，它的前後徑為2.1±0.7mm，橫徑為2.0±0.6mm。它位於腦下垂體窩中央的有52例(77.6%)，稍爲偏處一方的有15例(22.4%)。
關鍵字
無資料並列摘要
This is a retrospective evaluation of pituitary gland and fossa on both axial and coronal enhanced computed tomography (CT) scans in 67 patients who were not suffered from pituitary problem. The window setting was ranged from 200 to 300 and center about 35. The average height and width of the pituitary gland at mid-coronal cut are 4.1 ± 1.3 mm and 13.7 ± 1.7 mm respectively. The pituitary glands reveal heterogeneous enhancement in 82.1% and homogeneous enhancement in 17.9%. The uper border of the gland is concave in 29 patients (43.3%); flat in 31 patients (46.3%) and convex in 7 patients (10.4%). Sellar floors disclose flat and concave in three quaters of these patients. The pituitary stalk can be seen in almost all examinations. The average size of the stalk is 2.1 ± 0.7 mm (A-P) and 2.0 ± 0.6 mm (transverse) at the level of the dorsum sella. It is midline-located in 52 patients (77.6%) and slightly deviated to one side in 15 patients (22.4%).