T2加权磁共振图像上的超急性蛛网膜下腔出血。
Hyperacute subarachnoid hemorrhage on T2-weighted MR images.
作者信息
Rumboldt Zoran, Kalousek Miljenko, Castillo Mauricio
机构信息
Department of Radiology, University Hospital Sisters of Mercy, Zagreb, Croatia.
出版信息
AJNR Am J Neuroradiol. 2003 Mar;24(3):472-5.
Abstract
We describe a case of hyperacute subarachnoid and intraventricular hemorrhage from a ruptured aneurysm, which occurred while the patient was undergoing MR imaging. Compared with CSF, the blood in the subarachnoid space had slightly lower signal intensity on T2*-weighted gradient-echo images and increased signal intensity on T2-weighted spin-echo images. This finding differs from the generally accepted MR appearance of intracranial hemorrhage and should be recognized to ensure proper patient care.
摘要
我们描述了一例因动脉瘤破裂导致的超急性蛛网膜下腔和脑室内出血病例，该病例发生在患者接受磁共振成像（MR）检查时。与脑脊液相比，蛛网膜下腔的血液在T2*加权梯度回波图像上信号强度略低，而在T2加权自旋回波图像上信号强度增加。这一发现与颅内出血通常公认的MR表现不同，应予以认识以确保对患者进行恰当的护理。
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