Chen S S, Shao K N, Chiang J H, Chang C Y, Lao C B, Lirng J F, Teng M M
Department of Radiology, Veterans General Hospital-Taipei, Taiwan, ROC.
Zhonghua Yi Xue Za Zhi (Taipei). 1999 Aug;62(8):521-8.
High-resolution, real time, intraoperative ultrasonography (IOUS) has been used in a number of cases in our neurosurgical department to identify, localize and characterize intracranial abnormalities. We compare the images of IOUS with those of computerized tomography (CT) and magnetic resonance imaging (MRI) in order to enhance our experience and confidence.
IOUS images were compared with preoperative CT scans and/or MRIs in 30 intracranial masses. Tumor size and margin, echogenicity and edema were the features compared.
The images of IOUS, CT and MRI correlated closely except for images of primary gliomas. IOUS was more effective than CT and MRI in delineating the extent of a glioma, determining whether a lesion was cystic, with or without septation, or solid and in guiding surgical procedures. The contrast enhancement available with CT and MRI could not be demonstrated with IOUS.
IOUS provides exquisite detail of intracranial pathology as well as, or even better than, CT and MRI. Its application should be emphasized to minimize damage of normal brain tissue and increase the completeness of tumor resection.
高分辨率实时术中超声检查（IOUS）已在我们神经外科的许多病例中用于识别、定位和表征颅内异常情况。我们将IOUS图像与计算机断层扫描（CT）和磁共振成像（MRI）的图像进行比较，以增强我们的经验和信心。
将30例颅内肿块的IOUS图像与术前CT扫描和/或MRI进行比较。比较的特征包括肿瘤大小和边界、回声性和水肿情况。
除原发性胶质瘤的图像外，IOUS、CT和MRI的图像密切相关。在描绘胶质瘤的范围、确定病变是囊性（有无分隔）还是实性以及指导手术操作方面，IOUS比CT和MRI更有效。IOUS无法显示CT和MRI所具有的对比增强效果。
IOUS能提供颅内病理的精细细节，与CT和MRI相当，甚至更好。应强调其应用，以尽量减少对正常脑组织的损伤并提高肿瘤切除的完整性。
