Elevated end-diastolic ratio of the common carotid artery due to cerebral arteriovenous malformation: Two case reports
| Autor: | Motohisa Koga, Shoji Matsumoto, Taketo Hatano, Daisuke Kondo, Hideo Chihara, Ryo Yamasaki, Takeshi Yamada, Jun Ichi Kira, Tomoya Miyagi, Koji Tanaka |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:Medical physics. Medical radiology. Nuclear medicine
medicine.medical_specialty lcsh:R895-920 03 medical and health sciences 0302 clinical medicine Internal medicine medicine.artery Occlusion medicine Radiology Nuclear Medicine and imaging 030212 general & internal medicine Common carotid artery Cerebral arteriovenous malformation Intracerebral hemorrhage End-diastolic ratio medicine.diagnostic_test business.industry Carotid ultrasonography Arteriovenous malformation Digital subtraction angiography medicine.disease medicine.anatomical_structure Sonography Vascular resistance Cardiology cardiovascular system Internal carotid artery business 030217 neurology & neurosurgery |
| Zdroj: | Radiology Case Reports Radiology Case Reports, Vol 13, Iss 4, Pp 917-920 (2018) |
| ISSN: | 1930-0433 |
| Popis: | An elevated end-diastolic (ED) ratio of the common carotid artery (CCA) is an indicator of occlusive lesions of the distal portion of the internal carotid artery. We report 2 cases of cerebral arteriovenous malformation (AVM) showing an elevated ED ratio of the CCA, which decreased after surgery. Case 1 was a 28-year-old man with chronic recurrent headache with aura, and case 2 was a 29-year-old woman with sudden-onset headache and intracerebral hemorrhage without neurologic abnormality. In both cases, digital subtraction angiography revealed a Spetzler-Martin Grade IV AVM, which was mainly fed by branches of the left middle cerebral artery with venous drainage into superficial and deep cerebral veins. Preoperative carotid ultrasonography showed an elevated CCA ED ratio (1.38 in case 1 and 1.47 in case 2; left > right) without atherosclerotic lesions. Patients’ AVMs were successfully resected. In both cases, the ED ratio was decreased after surgery (to 1.05 in case 1 and 1.20 in case 2). A decrease in vascular resistance on 1 side caused by cerebral AVM can result in an increase in the CCA ED ratio comparable to that of carotid axis occlusion. Keywords: Carotid ultrasonography, Cerebral arteriovenous malformation, End-diastolic ratio |
| Databáze: | OpenAIRE |
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