MR Imaging of Intraventricular Neurocytoma

為探討磁振造影對腦室內神經細胞瘤的診斷價值，我們回顧性分析10例經手術及病理確認的腦室內神經細胞瘤的磁振造影表現。其中5位男性及5位女性，平均年齡34.6歲。所有影像在1.5 Tesla的磁振造影掃描器下取得，同時對於該腫瘤的所在位置，訊號密度，顯影強化形態，腫瘤內囊狀變化及出血性進行分析。所有腫瘤皆由側腦室或透明隔長出往腦室內漫延，它們均含有大小不一的腫瘤內囊狀變化。腫瘤實質在T1WI及T2WI下表現為等信號。顯影強化可見於6例。血管信號流空可見於４例及腫瘤內出血可見於2例。腦室內神經細胞瘤在磁振造影下有一定的特徵，了解這些特徵有助於術前診斷及指引手術的實施。

關鍵字

腦；腫瘤；神經細胞瘤；磁振造影

並列摘要

The purpose of this study is to investigate the MRI features of intraventricular neurocytoma (IN). The MR findings in ten cases of pathological proved intraventricular neurocytoma were reviewed retrospectively. There were 5 men and 5 women with a mean age of 34.6 years. The MR images were obtained at 1.5 Tesla and analyzed with respect to the location, signal intensities, contrast enhancement pattern, intratumoral cystic changes and hemorrhage in the lesions. Typically, all tumors were originated from the lateral ventricles or septum pellucidum and extended intraventricularly. They all contained multiple various-size intratumoral cysts. The solid components of the tumors were generally isointense in both T1-weighted and T2-weighted images. Contrast enhancement was found in six cases. Vascular signal void was observed in four cases and intratumoral hemorrhage was noted in two cases. The MR findings of intraventricular neurocytomas are quite characteristic. Accurate understanding of these MR features is helpful in preoperative diagnosis and planning of surgery.

並列關鍵字

Brain ； neoplasm ； neurocytoma ； MR imaging

國際替代計量

MR Imaging of Intraventricular Neurocytoma

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