Results for: subarachnoid-hemorrhage

What is a subarachnoid heamorraghe?

A subarachnoid hemorrhage is an abnormal and very dangerous condition in which blood collects beneath the arachnoid mater, a membrane that covers the brain. This area, called the subarachnoid space, normally contains cerebrospinal fluid. The accumulation of blood in the… Full Answer

What is bleeding on the brain?

One example would be a subarachnoid hemorrhage, where bleeding occurs and accumulates between layer of membranes around the brain and may reduce circulation to that part of the brain from increased pressure. Full Answer

What is subarachniod?

Subarachnoid: Literally, beneath the arachnoid, the middle of three membranes that cover the central nervous system. In practice, subarachnoid usually refers to the space between the arachnoid and the pia mater, the innermost membrane surrounding the central nervous system. The… Full Answer

What are subarachnoid cisterns?

The areas in which the subarachnoid and pia maters are widely separated from each other leading to the widening of the subarachnoid space. Some of the examples are cisterna magna, pontine cistern, chiasmatic cistern and many others. Full Answer

Why trauma not use contrast in ct brain?

Traumatic lesions to the brain are well seen without i.v. contrast agents. In particular, traumatic hemorrhage, be it epidural, subdural, subarachnoid, parenchymal or intraventricular, is spontaneously hyperdense on CT. Theoretically, i.v. contrast would be, at best useless, at worst counterproductive. Full Answer