颅内转移瘤的常见MRI表现多为结节状,单发或多发,以明显的瘤周水肿和明显的增强效应为特征。本文介绍几种非常见MRI表现,旨在说明其MRI表现的多样性和不典型性。 资料与方法 颅内转移瘤11例,其中7例经手术、病理证实,1例经脑脊液细胞学检查证实,另3例中2例有原发肿瘤史,都属临床诊断。使用西门子公司1.0TMagneton超导型机,自旋回波(SE)序列,T_1加权 Common MRI manifestations of intracranial metastases mostly nodular, single or multiple, with obvious peritumoral edema and obvious enhancement effect is characterized. This article describes several uncommon MRI manifestations designed to demonstrate the diversity and atypia of their MRI findings. Materials and Methods 11 cases of intracranial metastases, of which 7 cases were confirmed by surgery and pathology, 1 case confirmed by cytology of cerebrospinal fluid and 2 cases of other 3 cases had primary tumor history, all of which were clinical diagnosis. Using Siemens 1.0TM agneton superconducting machine, spin echo (SE) sequence, T_1 weighted