Bardfeld P A, Passalaqua A M, Braunstein P, Raghavendra B N, Leeds N E, Kricheff I I
J Comput Assist Tomogr. 1977 Jul;1(3):315-8. doi: 10.1097/00004728-197707000-00005.
Forty-seven patients with a final diagnosis of brain metastases were studied with both computed tomography (CT) and radionuclide (RN) scanning. Fifty-three percent of these patients also underwent contrast enhanced CT. Radionuclide scanning detected 94% of the cases, while CT without contrast enhancement was positive in 89%. The addition of contrast material to the CT examination increased the total sensitivity of CT to 94% and permitted the detection of two cases that were falsely negative on RN scanning and CT without contrast. With both techniques, lesions in the cerebral hemispheres were detected more readily than infratentorial lesions. Radionuclide scanning was less sensitive than CT without contrast in the detection of multiple metastases. Contrast enhanced CT should be used in all cases of suspected cerebral metastases unless contraindicated.
对最终诊断为脑转移瘤的47例患者进行了计算机断层扫描（CT）和放射性核素（RN）扫描研究。其中53%的患者还接受了增强CT检查。放射性核素扫描检测出94%的病例，而未增强的CT检测阳性率为89%。CT检查中添加造影剂后，CT的总敏感性提高到94%，并检测出2例在RN扫描和未增强CT检查中呈假阴性的病例。两种技术都显示，大脑半球的病变比幕下病变更容易被检测到。在检测多发转移瘤方面，放射性核素扫描不如未增强CT敏感。除非有禁忌证，否则所有疑似脑转移瘤的病例都应使用增强CT。
