Using Diffusion-Weighted Imaging to Detect the Early Stages of Acute Ischemic Stroke

The use of diffusion weighted images to detect the early stages of acute ischemic stroke accounts for about 70% of body water. Water molecules have a constant random motion called diffusion. Diffusion is the physical property of molecules and refers to their ability to randomly move relative to their thermal energy. Diffusion weighted imaging has the greatest impact on imaging assessment of ischemic stroke. This is a new and effective way to detect acute ischemic stroke earlier than conventional T2-weighted MRI or computed tomography.

The distinction between acute ischemic stroke and bleeding may be based on T2 * weighted images. 4 * FLAIR and T2-weighted images show high-signal lesions of ischemic infarction. If imaging occurs within 3 to 8 hours after onset of stroke, these sequences can usually indicate lesions 22. Density-weighted imaging (DWI) provides the option to detect substantial ischemia and / or infarction within minutes of the onset of stroke if necessary. . This sequence showed higher sensitivity in the test than NCCT within 6 hours after onset. However, at this stage, it is not necessarily a complete lesion area as indicated by DWI indicating an irreversible damaged tissue 22 A cytotoxic edema is not taking much time and the majority of DWI lesions are still feasible .

Stroke is damage to the brain caused by disruption of blood supply. Acute ischemic stroke is caused by cerebral artery thrombosis or embolic obstruction. It is more common than hemorrhagic stroke

There are two types of stroke: hemorrhagic and ischemic. Hemorrhagic stroke is caused by cerebral hemorrhage, cerebrovascular leakage or rupture. Ischemic stroke is caused by blood clots that move to the head and become trapped in smaller branches of the brain. Both prevent normal blood flow to the brain. The symptoms of a stroke depend on which part of the brain is attacked. This is because various parts of the brain control various body functions. My symptoms are that control is lost soon and the right arm hurts. I can not move because it's so soft. When I tried to talk, my words were ambiguous. During my second stroke, I felt my face numb. I can say that it is unilaterally hanging and not angry. This is the three parts of the quick acronym of general stroke symptoms (face sag, arm weakness, language ambiguity = time seeking medical treatment).