Location of Musical Murmurs | Severe Stenosis (n = 58)* | Collaterals (n = 5) | C-C Fistula (n = 2) | Moyamoya Disease (n = 1) |
---|---|---|---|---|
Extracranial (n = 4) | ||||
Internal carotid artery | 3 | |||
Vertebral artery | 1 | |||
Intracranial (n = 62) | ||||
Retro-orbital area | 1† | 2 | ||
Terminal internal carotid artery | 2 | |||
Middle cerebral artery | 20 | 1 | ||
Anterior cerebral artery | 9 | |||
Posterior cerebral artery | 13 | |||
Anterior communicating artery | 5‡ | |||
Vertebral artery | 5 | |||
Basilar artery | 4 |
Note:—C-C fistula indicates carotid cavernous sinus fistula.
* Number of musical murmurs.
† Transmitted from stenotic terminal internal carotid artery.
‡ Were grouped into anterior cerebral artery by sonographic findings.