内科医学论文：脑空气栓塞T2加权梯度回波磁共振成像.doc

内科医学论文：脑空气栓塞的T2加权梯度回波磁共振成像
Cerebral air emboli on T2-weighted
gradient-echo magnetic resonance imaging 脑空气栓塞的T2加权梯度回波磁共振成像
Sang-Beom Jeon,
Dong-Wha Kang
+Author Affiliations
Department of Neurology, Asan Medical Centre, University of Ulsan College of
Medicine, Seoul, South Korea

, Published 18 February 2009
Cerebral air embolism can sometimes be identified on brain CT,1 and subsequent
multiple infarcts can be observed on diffusion-weighted imaging (DWI).2 However, air
itself on a T2-weighted gradient-echo image (GRE) has not been demonstrated. A 77-year-old man was hospitalised for pneumonia. Eight days after admission, while sitting upright in bed, he suddenly became unresponsive after violent coughing with a central venous catheter disconnected. He also exhibited conjugate eye deviation to the left, quadriplegia, bilateral Babinski signs and subsequent generalised seizure. A brain CT and GRE revealed multiple lesions, apparently representing air, in the bi-hemispheric corticomedullary junctional area (fig 1A, B). DWI showed multiple
infarctions restricted to the cortex nearby the air (fig 1C). The location of acute infarcts
on DWI roughly coincided with the location of air emboli on GRE.
1脑空气栓塞有时可通过脑部CT诊断， 随后出现的多发性梗死可通过弥散加权成像
2(DWI)观察到。 然而，T2加权梯度回波成像(GRE)却无法显示空气。一名77岁的男
性因肺炎入院。住院第8天，患者在床上坐直时发生剧烈咳嗽，中心静脉导管脱出，随
后他突然失去了反应。他还出现了偏向左眼球的眼球共轭运动， 四肢瘫痪