Enzmann D R, Wheat R, Marshall W H, Bird R, Murphy-Irwin K, Karbon K, Hanbery J, Silverberg G D, Britt R H, Shuer L
Radiology. 1985 Feb;154(2):393-9. doi: 10.1148/radiology.154.2.3880911.
Intraoperative ultrasound (US) was compared to computed tomography (CT) in 41 intracranial and 6 spinal cord tumors. The studies correlated closely except for primary gliomas. Eight of the 22 primary intracranial gliomas (37%), including 1 low-grade and 7 anaplastic tumors, were larger and more extensive on US than on CT. Margins of non-enhanced primary astrocytomas were shown by US but not CT. Four anaplastic tumors (19%) exhibited echogenicity extending beyond the enhanced area. In 4 patients an enhanced lesion contained a lucent center which proved to be echogenic. Low-grade astrocytomas were relatively homogeneous on US, while anaplastic astrocytomas were more inhomogeneous. Cysts could be found in both types of astrocytomas and were often small and multiple. The echo pattern was not helpful in differentiating metastases from primary tumors, although all of them had sharp margins. Sonography of the central nervous system can provide valuable information about tumor morphology and margins.
在41例颅内肿瘤和6例脊髓肿瘤患者中，对术中超声（US）和计算机断层扫描（CT）进行了比较。除原发性胶质瘤外，两项研究结果密切相关。22例原发性颅内胶质瘤中有8例（37%），包括1例低级别肿瘤和7例间变性肿瘤，超声显示的肿瘤比CT更大且范围更广。超声可显示未强化的原发性星形细胞瘤的边界，而CT则不能。4例间变性肿瘤（19%）表现为回声延伸至强化区域之外。4例患者中，强化病灶内有一个透亮中心，经证实为回声性。低级别星形细胞瘤在超声上相对均匀，而间变性星形细胞瘤则更不均匀。两种类型的星形细胞瘤中均可见囊肿，且囊肿通常较小且多发。尽管所有肿瘤边界都很清晰，但回声模式对区分转移瘤和原发性肿瘤并无帮助。中枢神经系统超声检查可提供有关肿瘤形态和边界的有价值信息。
