Cerebral arteriovenous malformation

Diagnosis of cerebral arteriovenous malformation

CT, MRI, and angiography

Even arteriovenous malformations that are not bleeding can be identified on diagnostic imaging (CT or MRI). If a suspect lesion is found, cerebral angiography is carried out by means of a catheter to reach a final diagnosis. If hemorrhage has occurred, subarachnoid or intracerebral hemorrhage can be diagnosed on CT or MRI. Cerebral angiography or another test is then used to investigate the cause of hemorrhage and reach a final diagnosis.

[ Cerebral arteriovenous malformation (AVM) ]

Cerebral arteries (red arrows) and cerebral veins (blue arrows) are connected by a tangle of abnormal vessels (nidus: yellow arrows).

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