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Basilar invagination is invagination (infolding) of the base of the skull that occurs when the top of the C2 vertebra migrates upward. It can cause narrowing of the foramen magnum (the opening in the skull where the spinal cord passes through to the brain). It also may press on the lower brainstem. [1]
It arises from the basilar artery on each side at the level of the junction between the medulla oblongata and the pons in the brainstem. It has a variable course, passing backward to be distributed to the anterior part of the undersurface of the cerebellum, anastomosing with both the posterior inferior cerebellar (PICA) branch of the vertebral ...
Elliot R. McVeigh is a professor of bioengineering, Medicine and Radiology at the University of California, San Diego (UCSD). His research utilises low dose CT imaging and MR imaging techniques to identify those people at substantially higher risk for heart attacks.
It is typically caused by a basilar skull fracture, which presents complications such as infection. It may be diagnosed using brain scans (prompted based on initial symptoms), and by testing to see if discharge from the nose is cerebrospinal fluid. Treatment may be conservative (as many cases resolve spontaneously), but usually involves ...
Vertebrobasilar insufficiency (VBI) describes a temporary set of symptoms due to decreased blood flow in the posterior circulation of the brain.The posterior circulation supplies the medulla, pons, midbrain, cerebellum and (in 70-80% of people) supplies the posterior cerebellar artery to the thalamus and occipital cortex. [1]
Interventional neuroradiology (INR) also known as neurointerventional surgery (NIS), endovascular therapy (EVT), endovascular neurosurgery, and interventional neurology is a medical subspecialty of neurosurgery, neuroradiology, intervention radiology and neurology specializing in minimally invasive image-based technologies and procedures used in diagnosis and treatment of diseases of the head ...
The sign has been observed in the middle cerebral artery (MCA), [4] posterior cerebral artery (PCA), [5] vertebral artery, [2] and basilar artery; [6] these have been called the dense MCA sign, dense PCA sign, dense vertebral artery sign, and dense basilar artery sign, respectively. Rarely, a hypodense artery sign can occur due to fat embolism. [7]
Aerial view of the Naval Medical Center San Diego as seen in the 1950s An entirely new $270 million hospital complex was built in Florida Canyon, north of the original hospital, during the mid-1980s; the site was chosen at the urging of then- U.S. Representative Bob Wilson , after whom the new hospital complex was subsequently named.