POSTERIOR LOBE OF THE PITUITARY IN DIABETES-INSIPIDUS - MR FINDINGS
POSTERIOR LOBE OF THE PITUITARY IN DIABETES-INSIPIDUS - MR FINDINGS
复制标题
DOI：
10.1097/00004728-198703000-00004
复制
发表时间：
1987-03-01
影响因子：
1.3
通讯作者：
TORIZUKA, K
中科院分区：
文献类型：
--
作者：
FUJISAWA, I;NISHIMURA, K;TORIZUKA, K
通过 1.5 T 磁共振 (MR) 对 5 例尿崩症 (DI) 患者的垂体后叶进行了评估，其中 1 例为原发性尿崩症 (DI)，4 例为生殖细胞瘤 (2 例)、畸胎瘤 (1 例) 和 X 组织细胞增多症 (1 例) 所致的继发性 DI 病例。正常后叶在 T1 加权图像 (T1WI)（短 T1 值）上显示出与脂肪组织无法区分的高信号。在所有 5 例 DI 病例中，T1WI 上垂体窝均未检测到后叶正常高信号。因此，由于这一特征性发现，MR 可能极大地有助于 DI 的诊断。我们推测后叶的短TI值与其功能完整性密切相关，可能是由于下丘脑垂体束轴突中的神经分泌物质所致。
The posterior lobe of the pituitary gland was evaluated by 1.5 T magnetic resonance (MR) in five cases of diabetes insipidus (DI), including one primary (idiopathic) and four secondary DI cases due to germinomas (two), teratoma (one), and histiocytosis X (one). The normal posterior lobe displays high signal indistinguisable from fatty tissue on T1-weighted images (T1WI) (short T1 value). In all five DI cases the normal high signal of the posterior lobe was not detected in the pituitary fossa on T1WI. Hence, because of this characteristic finding, MR may greatly assist in the diagnosis of DI. We may speculate that the short TI value of the posterior lobe is closely related to its functional integrity and may be due to the neurosecretory materials in the axons of the hypothalamohypophyseal tract.