Occipital artery arising from the cervical internal carotid artery at the level of the C2 vertebral body: three cases detected utilizing magnetic resonance angiography

2020 ◽  
Vol 42 (7) ◽  
pp. 831-834
Author(s):  
Akira Uchino ◽  
Naoko Saito
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Vertebral Body ◽  
Internal Carotid ◽  
Occipital Artery ◽  
Cervical Internal Carotid Artery

Bilateral Internal Carotid to Anterior Cerebral Artery Anastomosis with Anterior Communicating Artery Aneurysm: Technical Case Report

2005 ◽  
Vol 57 (suppl_4) ◽  
pp. ONS-E400-ONS-E400 ◽  
Author(s):  
Kaya Kılıç ◽  
Metin Orakdöğen ◽  
Aram Bakırcı ◽  
Zafer Berkman
Keyword(s):  
Case Report ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Anterior Communicating Artery

Abstract OBJECTIVE AND IMPORTANCE: The present case report is the first one to report a bilateral anastomotic artery between the internal carotid artery and the anterior communicating artery in the presence of a bilateral A1 segment, fenestrated anterior communicating artery (AComA), and associated aneurysm of the AComA, which was discovered by magnetic resonance angiography and treated surgically. CLINICAL PRESENTATION: A 38-year-old man who was previously in good health experienced a sudden onset of nuchal headache, vomiting, and confusion. Computed tomography revealed a subarachnoid hemorrhage. Magnetic resonance angiography and four-vessel angiography documented an aneurysm of the AComA and two anastomotic vessels of common origin with the ophthalmic artery, between the internal carotid artery and AComA. INTERVENTION: A fenestrated clip, introduced by a left pterional craniotomy, leaving in its loop the left A1 segment, sparing the perforating and hypothalamic arteries, excluded the aneurysm. CONCLUSION: The postoperative course was uneventful, with complete recovery. Follow-up angiograms documented the successful exclusion of the aneurysm. Defining this particular internal carotid-anterior cerebral artery anastomosis as an infraoptic anterior cerebral artery is not appropriate because there is already an A1 segment in its habitual localization. Therefore, it is also thought that, embryologically, this anomaly is not a misplaced A1 segment but the persistence of an embryological vessel such as the variation of the primitive prechiasmatic arterial anastomosis. The favorable outcome for our patient suggests that surgical treatment may be appropriate for many patients with this anomaly because it provides a complete and definitive occlusion of the aneurysm.

scholarly journals Magnetic Resonance Findings in Spontaneous Dissection of the Cervical Internal Carotid Artery —Case Report—

1992 ◽  
Vol 32 (10) ◽  
pp. 773-777 ◽  
Author(s):  
Satoshi KURODA ◽  
Takeo ABUMIYA ◽  
Akihiro TAKAHASHI ◽  
Hiroyuki IMAMURA ◽  
Hisatoshi SAITO ◽  
...  
Keyword(s):  
Case Report ◽  
Magnetic Resonance ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Spontaneous Dissection ◽  
Cervical Internal Carotid Artery

scholarly journals Giant Cell Arteritis Associated with Lesion of the Internal Carotid Artery: Assessment of Response to Steroid Therapy by Magnetic Resonance Angiography

2008 ◽  
Vol 47 (13) ◽  
pp. 1285-1286 ◽  
Author(s):  
Hidehiro Takekawa ◽  
Yasuhisa Daimon ◽  
Ryotaro Takashima ◽  
Saiko Aiba ◽  
Hideaki Tanaka ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Giant Cell Arteritis ◽  
Giant Cell ◽  
Steroid Therapy ◽  
Internal Carotid

Surgical Accessibility of the Distal Internal Carotid Artery on Carotid Endarterectomy Evaluated Using Magnetic Resonance Angiography

Neurosurgery ◽  
2015 ◽  
Vol 76 (5) ◽  
pp. 633-637 ◽  
Author(s):  
Hisashi Kubota ◽  
Yasuhiro Sanada ◽  
Takayuki Tasaki ◽  
Masaharu Miyauchi ◽  
Rokuya Tanikawa ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Carotid Endarterectomy ◽  
Internal Carotid ◽  
Transverse Process ◽  
Carotid Bifurcation ◽  
Cross Point ◽  
Distal Internal Carotid Artery

Abstract BACKGROUND: Magnetic resonance angiography (MRA) is helpful for preoperatively evaluating the degree of carotid stenosis, although it is not always useful for assessing surgical accessibility to the distal internal carotid artery (ICA) due to the lack of osteological information. OBJECTIVE: To demonstrate a method for evaluating the accessible distal portion of the ICA for carotid endarterectomy (CEA) using MRA. METHODS: As an indicator of the upper limit of the operating field, a line drawn from the C1 transverse process to the hyoid bone (C1-H line) was defined. The cross-point between the C1-H line and distal ICA was delineated on 3-dimensional (3-D) MRA and 3-D tomography angiography (CTA). The distance between the carotid bifurcation and C1-H line was measured in 11 patients. The exposed distal ICA was compared with the extent of intraoperative ICA exposure. RESULTS: The mean vertical distance (27.5 mm) from the carotid bifurcation to the C1-H line measured using 3-D MRA was almost the same as the distance (28 mm) evaluated on 3-D CTA. The discrepancy in distance between the 2 modalities was 1.9 ± 1.7 mm. Furthermore, the point of the ICA across the C1-H line created on 3-D MRA was in accordance with the intraoperative measurement (28.7 mm) of the exposed ICA. CONCLUSION: The C1-H line measured on 3-D MRA is a simple and useful indicator of the distal point of the accessible ICA during CEA, especially in patients with renal dysfunction and allergies to contrast medium.

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