Orrison W W, Gentry L R, Stimac G K, Tarrel R M, Espinosa M C, Cobb L C
Department of Radiology, University of New Mexico School of Medicine, Albuquerque 87131-5336.
AJNR Am J Neuroradiol. 1994 Feb;15(2):351-6.
To compare CT and MR in the evaluation of acute head injury.
One hundred seven consecutive patients who were referred to the emergency department and underwent both MR and CT cranial examinations within 48 hours were retrospectively reviewed. The films were interpreted by two neuroradiologists blinded to all patient information.
The sensitivity of MR was significantly higher than that of CT for the detection of contusion, shearing injury, subdural and epidural hematoma, and sinus involvement. The sensitivity of CT was significantly higher than that of MR for the evaluation of fracture. The sensitivities of MR and CT were statistically equivalent for the detection of superficial soft-tissue injury. The overall sensitivity of MR for the detection of abnormalities in acute head trauma was 96.4%, and for CT was 63.4%.
CT and MR are complementary studies in the evaluation of acute head trauma. MR is necessary to define or exclude contusions, deep shearing injury, and extraaxial fluid collections in acute head trauma.
比较CT和MR在急性颅脑损伤评估中的作用。
回顾性分析107例连续转诊至急诊科并在48小时内接受头颅MR和CT检查的患者。由两名对所有患者信息均不知情的神经放射科医生解读影像资料。
在检测挫伤、剪切伤、硬膜下和硬膜外血肿以及鼻窦受累方面，MR的敏感性显著高于CT。在评估骨折方面，CT的敏感性显著高于MR。在检测浅表软组织损伤方面，MR和CT的敏感性在统计学上相当。MR检测急性颅脑创伤异常的总体敏感性为96.4%，CT为63.4%。
在急性颅脑创伤评估中，CT和MR是互补的检查方法。在急性颅脑创伤中，需要MR来明确或排除挫伤、深部剪切伤和轴外液体积聚。
