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Performing a cerebral angiogram by gaining access through the femoral artery or radial artery is feasible in order to treat cerebral aneurysms with a number of devices [12] Certain conditions such as contrast allergy, renal insufficiency, and coagulation disorders are contraindicated in this procedure.
Interior view of ambulance with a mobile CT scanner seen at the center. A mobile stroke unit (MSU) is an ambulance that furnishes services to diagnose, evaluate, and/or treat symptoms of an acute stroke. [1]
In medicine, the dense artery sign or hyperdense artery sign is an increased radiodensity of an artery as seen on computer tomography (CT) scans, and is a radiologic sign of early ischemic stroke. [1] In earlier studies of medical imaging in patients with strokes, it was the earliest sign of ischemic stroke in a significant minority of cases. [2]
He injected the middle cerebral artery, anterior cerebral artery and posterior cerebral artery in turn, in an attempt to establish the territories these arteries supply. Even when other anastomoses from the circle of Willis were blocked off, the whole cerebral arterial tree could be filled. [ 1 ]
Functional transcranial Doppler sonography (fTCD) is a neuroimaging tool for measuring cerebral blood flow velocity changes due to neural activation during cognitive tasks. [8] Functional TCD uses pulse-wave Doppler technology to record blood flow velocities in the anterior, middle, and posterior cerebral arteries.
Posterior circulation infarct (POCI) is a type of cerebral infarction affecting the posterior circulation supplying one side of the brain.. Posterior circulation stroke syndrome (POCS) refers to the symptoms of a patient who clinically appears to have had a posterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis.
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A single posterior choroidal artery drains into the vein of Galen. [10] Pattern 3 One or both posterior choroidal and one or both anterior cerebral arteries drain directly into the Galenic system. [10] Pattern 4 An angiomatous network of posterior choroidal and thalamic perforating arteries enter the Vein of Galen directly. [10] Pattern 5