Acute infarct

Chinnapong / Getty Images What Does the Thalamus Do? The thalamus is a region in the central part of the brain that plays an important role in relaying sensory information from the body to specific parts of the brain. The thalamus acts as a critical hub of information within the brain, think of it as a sort of Grand Central Station for sensory and behavioral information. What Is a Thalamic Stroke? A thalamic stroke is a specific stroke that occurs when blood flow is disrupted to the thalamus in the brain. The disruption in blood flow causes neurons within the thalamus to become damaged. It can result in symptoms of thalamic stroke such as difficulty processing vision, inability to find words, and partial sensory and movement loss across the body. Hemorrhagic Strokes The most common cause of a hemorrhagic stroke is uncontrolled hypertension (high blood pressure). High pressure damages the small vessels, known as lacunae, in the brain over time. Eventually, these small vessels can break open leading to a hemorrhagic stroke known as a lacunar stroke. Lifestyle Risk Factors for Thalamic Strokes and Other Lacunar Strokes The most significant risk factor for stroke is hypertension. Uncontrolled high blood pressure can lead to damage to the small blood vessels that supply the brain. Long-term damage can significantly impair blood flow to the brain and cause a stroke. Demographic Risk for Thalamic Strokes Strokes can affect all people, though there are certain risk factors for str...

Article: • • • • • Images: • Terminology DWI is used to denote the entire sequence performed to acquire and calculate b=0 and b=1000 images, and Pathology Increased DWI signal in ischemic brain tissue is usually observed within a few minutes after arterial occlusion and is primarily due to cytotoxic edema resulting from a cascade that begins with depletion of ATP and failure of the sodium-potassium transmembrane pump. Imaging changes progress through a stereotypic sequence of DWI increase and ADC reduction due to initial intracellular shift of water ( For a general discussion of the pathogenesis and radiographic features please refer to Radiographic features Reported sensitivity ranges from 88-100% and specificity ranges from 86-100%. Only in a small minority of cases (~7%) imaging of patients with subsequently demonstrated ischemic strokes is 6. This occurs in one of three contexts 6: • posterior fossa infarcts (most common) • small volume infarcts • early imaging 3 weeks) • ADC values increase • DWI signal low - despite T2 hyperintensity because of the overwhelmingly facilitated ADC values DWI signal decreases ( • 3. Campbell BC, Purushotham A, Christensen S et-al. The infarct core is well represented by the acute diffusion lesion: sustained reversal is infrequent. J. Cereb. Blood Flow Metab.32 (1): 50-6. • 4. Grant PE, He J, Halpern EF et-al. Frequency and clinical context of decreased apparent diffusion coefficient reversal in the human brain. Radiology. 2001;221 (1): ...

A cerebellar stroke is one of the less common types of This type of stroke typically affects only one side or section of the cerebellum. It’s also referred to as cerebellar stroke syndrome. The cerebellum is the portion of the brain that controls movement and maintains balance. It’s located at the back of your brain, at the bottom. It has a symmetric left and right side. Each side controls coordination and movement for the corresponding side of your body. There are a number of blood vessels that feed the cerebellum. A • • • A cerebellar stroke is a rare condition. According to a 2015 review, they account for less than Symptoms from a cerebellar stroke happen suddenly. They can be mistaken for other conditions because they appear nonspecific. In many cases, these symptoms are ignored. Common symptoms of a cerebral stroke include: • • • • • • More visible symptoms of a cerebellar stroke may include: • • • abnormal reflexes • • • • If left untreated, a cerebellar stroke can cause your A cerebellar stroke is often caused by a blood clot that obstructs blood flow to the cerebellum. Blood clots can form in your blood vessels or travel from other parts of the body — such as the heart or the neck — until it becomes trapped in blood vessels leading to the cerebellum. A cerebellar stroke can also be the result of There are a number of factors that can increase your risk of having a cerebellar stroke. Risk factors that could lead to a blood clot or obstruction include: • smoking • • ...

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