A stroke in the acute phase, i.e. when first stroke occurs.
The magnetic resonance diffusion (diffusion MRI) provides significantly more than the computed tomography (CT Scan).
Usually the diagnosis to stroke the CT used. However, according to new guidelines from the American Academy of Neurology, the MRI brain scans in 83% of cases, in contrast to CT, which detects the correctly only 26% of cases.
The majority of strokes are ischemic. Key to about 85% of cases generated occlusion of a vital artery in the brain resulting in an area of the brain can not get the blood and therefore oxygen. The blockage may be caused due to a clot or a progressive narrowing due to atherosclerosis of the artery leading to closure.
The immediate and correct diagnosis of the type of stroke in a patient is vital.
The time frame for therapeutic restoration of occlusion of the artery responsible for the ischemia in an ischemic stroke is very small, of the order of a few hours only.
The CT scan, the CT Scan brain depends on receiving a series of specialized brain radiographs. In MRI, the MRI magnets and radio waves are used to obtain better images of the brain condition.
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In magnetic resonance diffusion, diffusion MRI, is measurement of the water molecules in motion within the brain. This allows to find areas where water diffusion is restricted and highlight areas of the brain which caused damage.
According to the recent guidelines of the American Academy of Neurology MRI perfusion imaging is to be regarded as a more useful test of CT for the diagnosis of cerebral ischemic event in the acute stage within 12 hours of the onset of the first symptom of stroke, i.e. stroke.
There are various types of MRI that can reveal how serious failures create some types of strokes. MRI can discover damage early. This is important because discovering faults early, proper treatment can be given at the appropriate time thus resulting in a better way.
American experts stress that large studies have documented that the diffusion magnetic resonance imaging performed when the patient with stroke reaches the doctor, allows the correct diagnosis and emergency administration of thrombolytic therapy.
They add that, where there is no immediate possibility of MRI, CT scan can show whether or not there is bleeding. If there is bleeding and is hemorrhagic stroke should not be given thrombolytic therapy.
Bleeding strokes constitute 15% of all strokes. In these cases, thrombolytic therapy should not be given because in such an eventuality the bleeding worse.
Strokes are the third leading cause of death. Furthermore it is of the major causes of disability.
Unfortunately, the situation in terms of timely diagnosis and treatment of strokes is not satisfactory.
We need to done to the proper diagnosis and treatment of strokes occur only in emergency departments. The new guidelines from the American Academy of Neurology add significantly to this end.