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Aneurysm (Brain) (cont.)

How is a brain aneurysm diagnosed?

In most instances, the diagnosis of a brain aneurysm is made by CT scan and/or MRI imaging studies of the brain. These tests help identify and localize the brain aneurysm. Other tests such as a cerebral angiogram and/or a cerebrospinal fluid analysis may also be used to help determine the diagnosis. In addition, transcranial Doppler ultrasonography and single-photon emission computed tomography (SPECT) may be used to examine blood flow within the brain. Laboratory tests that are almost always ordered are a complete blood cell count (CBC), prothrombin time (PT), activated partial thromboplastin time (a PTT), serum chemistries, liver function tests, and arterial blood gases. These tests help determine if the patient is anemic and/or prone to bleeding and help determine if the patient's blood is getting appropriate oxygenation.

Medically Reviewed by a Doctor on 3/24/2014

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