栓塞性脑膜瘤的磁共振成像变化

MRI changes in embolized meningiomas.

作者信息

Terada T, Nakamura Y, Tsuura M, Miyamoto K, Nakai K, Nishiguchi T, Hayashi S, Komai N

机构信息

Department of Neurological Surgery, Wakayama Medical College, Japan.

出版信息

Neuroradiology. 1992;34(2):162-7. doi: 10.1007/BF00588165.

DOI:10.1007/BF00588165

PMID:1603317

Abstract

Study of the MRI changes that occur after superselective embolization of hypervascular meningiomas with Gelfoam powder (5 cases) and polyvinyl alcohol (PVA) particles 150-250 microns in size (4 cases) has indicated that, after embolization, meningiomas showed loss of the signal void, decrease in gadolinium-DTPA contrast enhancement, and prolonged T1 and T2. Shortening of T1 and T2 was seen in two patients with Gelfoam-embolized meningiomas in whom CT showed pooling of iodinated contrast medium in the tissue. In vitro experimental data demonstrated that the shortening of T1 and T2 was due to the iodinated contrast medium.

摘要

对5例使用明胶海绵粉末和4例使用尺寸为150 - 250微米的聚乙烯醇（PVA）颗粒对富血管性脑膜瘤进行超选择性栓塞后发生的MRI变化进行的研究表明，栓塞后，脑膜瘤出现信号缺失、钆 - DTPA对比增强降低以及T1和T2延长。在2例使用明胶海绵栓塞的脑膜瘤患者中观察到T1和T2缩短，其CT显示碘化造影剂在组织中聚集。体外实验数据表明，T1和T2缩短是由于碘化造影剂所致。