Does a CT scan show brain activity?
A CT scan can detect conditions of the brain, like stroke and vascular dementia. The images produced by a CT scan provide detailed information about brain tissue and brain structures.
How serious is an angiogram of the brain?
Cerebral angiography carries some rare but potentially serious risks. They include: stroke (if the catheter loosens plaque inside a blood vessel) damage to the blood vessels, including puncturing an artery.
Why is a brain angiogram done?
A cerebral angiogram may be performed: to evaluate arteries of the head and neck before surgery. to provide additional information on abnormalities seen on MRI or CT of the head, such as the blood supply to a tumor. to prepare for other medical treatment, such as in the surgical removal of a tumor.
Will CT scan of head show aneurysm?
An X-ray image of the head, processed by a computer into two- and three-dimensional images of the skull and brain. A CT scan can show the presence of an aneurysm and, if the aneurysm has burst, detects blood that has leaked into the brain.
What does abnormal head CT mean?
The abnormal CT scan was defined as any finding ascribed to head trauma including skull fracture, cerebral edema, epidural hematoma, subdural hematoma, cerebral contusion, intracerebral hematoma, intraventricular hemorrhage, and subarachnoid hemorrhage.
Can CT angiography be used to confirm brain death?
BACKGROUND AND PURPOSE: Lack of cerebral circulation is an important confirmatory test for brain death (BD). Conventional angiography remains the standard imaging method, but CT angiography (CTA) is emerging as an alternative.
Is lack of cerebral circulation a useful diagnostic test for brain death?
BACKGROUND AND PURPOSE: Lack of cerebral circulation is an important confirmatory test for brain death (BD). Conventional angiography remains the standard imaging method, but CT angiography (CTA) is emerging as an alternative. France accepts BD diagnoses relying on a score based on lack of opacification of 7 intracerebral vessels in CTA images.
What imaging tests are used to diagnose brain death?
Radiographic features Most imaging tests for brain death rely on the absence of cerebral blood flow as a surrogate for brain death. This can be assessed by a number of modalities including CT, MRI, ultrasound, nuclear medicine examinations, and catheter angiography.
What is the role of transcranial Doppler in the diagnosis of brain death?
While brain death is ultimately a clinical diagnosis, transcranial Doppler (TCD) may be used as an ancillary modality to provide further clinical support by detecting the presence of cerebral circulatory arrest, features of which include: reverberant or oscillating flow in the MCA vessels has been reported 8.