Hatfield M K, Rubin J M, Gebarski S S, Silbergleit R
Department of Radiology, University of Chicago, Illinois.
J Ultrasound Med. 1989 Mar;8(3):131-4. doi: 10.7863/jum.1989.8.3.131.
A retrospective study of intraoperative sonography and preoperative head computed tomography (CT) in 15 patients with low-grade brain gliomas was undertaken to determine whether areas of increased echogenicity without shadowing corresponded with areas of pathologic CT enhancement. Glioma echogenicity was considered increased if greater than or equal to adjacent sulcal echogenicity. Of the 15 lesions, 7 of 8 with pathologic CT enhancement showed areas of increased echogenicity without shadowing. Areas of increased echogenicity topographically correlated with areas of pathologic CT enhancement. One of eight lesions with pathologic enhancement had no areas of increased echogenicity; however, the enhancement in this lesion was minimal. Six of seven patients without pathologic CT enhancement had areas of echogenicity always less than sulcal echogenicity. Our results suggest that, in low-grade gliomas, regions of enhancement usually correspond to areas of increased echogenicity without shadowing. These findings differ from those found with high-grade gliomas.
对15例低级别脑胶质瘤患者进行了术中超声检查和术前头部计算机断层扫描（CT）的回顾性研究，以确定无阴影的高回声区域是否与CT病理增强区域相对应。如果胶质瘤的回声强度大于或等于相邻脑沟的回声强度，则认为其回声增强。在15个病灶中，8个有CT病理增强的病灶中有7个显示无阴影的回声增强区域。回声增强区域与CT病理增强区域在地形上相关。8个有病理增强的病灶中有1个没有回声增强区域；然而，该病灶的增强很轻微。7例无CT病理增强的患者中有6例的回声区域始终小于脑沟回声。我们的结果表明，在低级别胶质瘤中，增强区域通常对应于无阴影的回声增强区域。这些发现与高级别胶质瘤的发现不同。
