Snow R B, Zimmerman R D, Gandy S E, Deck M D
Neurosurgery. 1986 Jan;18(1):45-52. doi: 10.1227/00006123-198601000-00008.
Thirty-five patients who had incurred head trauma were studied with computed tomography (CT) and magnetic resonance imaging (MRI). CT was performed using a General Electric 8800 scanner. MRI was conducted with a Technicare Teslacon system using a 5.0 kG (0.5 T) magnetic field. Clinically, patients varied from those with mild concussions without focal neurological signs to those with severe neurological dysfunction including posttraumatic coma. MRI was superior to CT in imaging 23 of 41 extracerebral fluid collections, both in estimating the size of the collections and in diagnosing small collections. MRI was also superior to CT in distinguishing chronic subdural hematomas from hygromas. Further, MRI was superior to CT in visualizing nonhemorrhagic contusion in 15 of 21 lesions. Because of the potential failure of MRI to diagnose acute subarachnoid or acute parenchymal hemorrhage, CT remains the procedure of choice in diagnosing head injury less than 72 hours old.
对35例头部外伤患者进行了计算机断层扫描（CT）和磁共振成像（MRI）检查。CT使用通用电气8800扫描仪进行。MRI采用Technicare Teslacon系统，磁场强度为5.0 kG（0.5 T）。临床上，患者情况各异，从无局灶性神经体征的轻度脑震荡患者到包括创伤后昏迷在内的严重神经功能障碍患者。在41例脑外积液中，MRI在23例的成像方面优于CT，在估计积液大小和诊断小积液方面均如此。在区分慢性硬膜下血肿和脑积液囊肿方面，MRI也优于CT。此外，在21个病变中的15个中，MRI在显示非出血性挫伤方面优于CT。由于MRI可能无法诊断急性蛛网膜下腔或急性实质内出血，对于诊断72小时内的头部损伤，CT仍然是首选检查方法。
