Harden S P, Dey C, Gawne-Cain M L
Department of Radiology, Southampton General Hospital, Southampton, UK.
Clin Radiol. 2007 May;62(5):404-15. doi: 10.1016/j.crad.2006.09.031. Epub 2007 Mar 26.
Unconscious patients are frequently referred to radiology departments for computed tomography (CT) of the brain. The objectives of these examinations are to define the underlying cause of impaired consciousness and in some cases to determine the severity of associated brain injury. There is often little history available to guide the clinician or radiologist, particularly in patients referred from the casualty department. In this review, we present the typical CT appearances of adult patients presenting with loss of consciousness for CT examination. We focus on the most common abnormalities that are identified in everyday radiological practice, emphasize important diagnostic signs that may enable a confident diagnosis to be made and discuss when further imaging may be warranted.
意识不清的患者经常被送往放射科进行脑部计算机断层扫描（CT）。这些检查的目的是确定意识障碍的潜在原因，在某些情况下确定相关脑损伤的严重程度。通常几乎没有病史可供临床医生或放射科医生参考，尤其是对于从急诊科转诊来的患者。在本综述中，我们展示了因意识丧失而接受CT检查的成年患者的典型CT表现。我们重点关注日常放射实践中发现的最常见异常，强调可能有助于做出可靠诊断的重要诊断征象，并讨论何时需要进一步成像检查。
