ABSTRACT
Magnetic resonance imaging (MRI) is being increasingly used in the diagnosis and management of acute ischemic stroke. This chapter provides simple and up-to-date information about the use of MRI in ischemic stroke patients and stroke research on animals. The intravascular water follows when reperfusion occurs, known as vasogenic edema; this process begins 3 hours after the onset of stroke and reaches a maximum 2 to 4 days after the onset of stroke. Mounting a small bed into the system allows new technique to be used for laboratory animal studies of stroke. The MRI system for rodents is a little different from human use due to small size of the animals. Nuclear magnetic resonance refers to the ability of certain nuclei to emit useful signals when these nuclei are subjected to a strong static magnetic field and then excited by another strong but varying magnetic field. MRI findings in missing lesions follow the same pattern observed in thromboembolic infarction.
