Worthington B S, Mawhinney R R, Holland I M, Lowe J, Punt J, Bydder G, Young I R
Department of Academic Radiology, University of Nottingham, England.
Acta Radiol Suppl. 1986;369:170-2.
Forty-nine patients with a space occupying lesion in the cerebellopontine angle cistern were examined by computed tomography (CT), magnetic imaging (MRI) and, where appropriate, conventional neuroradiologic techniques. The presence of an intracanalicular extension and a high signal on T2 weighted sequences were typical of acoustic neuroma and allowed separation from meningioma. Contrast enhancement with gadolinium DTPA was particularly valuable in recurrent acoustic neuroma. Typically epidermoids had long T1 and T2 values. Sequences which highlight flow allow vascular lesions to be identified without the use of contrast media. In separating the several pathologies MRI was superior to CT and also gave information on tissue composition in acoustic neuroma.
对49例桥小脑角池占位性病变患者进行了计算机断层扫描（CT）、磁共振成像（MRI）检查，并在适当情况下采用了传统神经放射学技术。内耳道延伸及T2加权序列上的高信号是听神经瘤的典型表现，有助于与脑膜瘤相鉴别。钆喷酸葡胺增强扫描对复发性听神经瘤尤为重要。表皮样囊肿通常具有长T1和T2值。突出血流的序列可在不使用造影剂的情况下识别血管病变。在鉴别几种病变时，MRI优于CT，还能提供听神经瘤组织成分的信息。
