Orrison W W, Champlin A M, Kesterson O L, Hartshorne M F, King J N
Department of Radiology, University of New Mexico School of Medicine, Albuquerque 87131-5336.
AJNR Am J Neuroradiol. 1994 May;15(5):913-6.
Three cases of MR with gadopentetate dimeglumine in patients diagnosed with cerebral death are presented. Observation of an MR "hot nose sign" and an "intravascular enhancement sign" provided additional imaging support in the clinical diagnosis of brain death. The MR findings in brain death include: 1) transtentorial and foramen magnum herniation, 2) absent intracranial vascular flow void, 3) poor gray matter/white matter differentiation, 4) no intracranial contrast enhancement, 5) carotid artery enhancement (intravascular enhancement sign), and 6) prominent nasal and scalp enhancement (MR hot nose sign). Additional modalities for confirming brain death are discussed.
本文报告了3例诊断为脑死亡患者使用钆喷酸葡胺的磁共振成像（MR）情况。观察到MR“热鼻征”和“血管内强化征”为脑死亡的临床诊断提供了额外的影像学支持。脑死亡的MR表现包括：1）小脑幕和枕骨大孔疝；2）颅内血管流空消失；3）灰质/白质分化不良；4）颅内无对比剂强化；5）颈动脉强化（血管内强化征）；6）鼻和头皮显著强化（MR热鼻征）。文中还讨论了用于确认脑死亡的其他检查方法。
