Hyperacute Ischemic Stroke: Middle Cerebral artery Susceptibility Sign at Echo-Planar Gradient-Echo MR Imaging
Radiology 232:466-473, Rovira,A.,et al, 2004
The Value of MRI in Angiogram-Negative Intracranial Haemorrhage
Neuroradiology 36:422-425, Renowden,S.A., 1994