MRI诊断原发性空蝶鞍综合征

目的 :分析原发性空蝶鞍综合征的 MRI影像表现 ,探讨 MRI对原发性空蝶鞍综合征的诊断价值。方法 :2 0 0 2年 1月至 2 0 0 4年 6月对 2 1例临床有症状的原发性空蝶鞍患者行颅脑 MRI检查 ,基本扫描序列为矢状面T1 WI、冠状面 T1 WI,部分病例加横断面 T1 WI、T2 WI、Flair,6例行钆对比增强扫描。结果 :原发性空蝶鞍综合征的MRI表现主要有蝶鞍增大 ,鞍底下陷 ,鞍内见典型的长 T1 、长 T2 脑脊液信号 ,垂体受压变扁紧贴于鞍底 ,冠状位呈锚状而矢状位呈线状 ,但其信号无异常改变 ,垂体柄一般无偏移。结论 :原发性空蝶鞍综合征具有典型的 MRI表现 ,MRI可准确诊断 PESS,并可鉴别原发性空蝶鞍与其他病变 ,应作为 PESS的首选影像学检查方法。

MR Imaging of Primary Empty Sella Syndrome

Objective To analyze MR imaging features of primary empty sella syndrome(PESS) and explore diagnostic value of MR imaging in PESS.Methods Twenty-one patients (6 male,15 female) with PESS undertook cerebral MR imaging on a 1.5 T scanner (GE Signa) from January 2002 to June 2004. Sagittal and coronal T 1-weighted images were obtained in all cases, while axial T 1-and T 2-weighted images, Flair images were obtained in some cases,and contrast-enhanced MR scanning with Gd-DTPA were carried out in six patients.Results MRI features of PESS were as follows:①the sella expanded;②the inside of sella was expressed with CSF signal;③pituitary gland was pressed and flat closed to the bottom,it showed line shape on sagittal scan and anchor shape on coronal scan;④pituitary handle was placed in the middle and extended.Conclusion PESS has similar MRI manifestations. MRI could reveal the correct diagnosis with its multi-oriented characteristics, and it is recommendable as the first choice of imaging procedure in PESS.