scholarly journals Magnetic resonance angiographic study of the variations in the branching pattern of external carotid artery

2021 ◽  
Vol 8 (3) ◽  
pp. 175-178
Author(s):  
Rohita Salam ◽  
Sheela Sivan
Keyword(s):  
Magnetic Resonance ◽  
Carotid Artery ◽  
Tertiary Care ◽  
External Carotid Artery ◽  
External Carotid ◽  
Lateral Side ◽  
Occipital Artery ◽  
Branching Pattern ◽  
Ascending Pharyngeal Artery ◽  
Medial Side

Knowledge of anatomy of the branching pattern of external carotid artery (ECA) is needed for head and neck surgeries and diagnostic purposes. Previously knowledge regarding this was obtained from dissecting specimens. But with magnetic resonance angiograms being done widely, data from these may be taken for a better understanding of the branching pattern of ECA. To study the branching pattern of external carotid artery using MR angiograms taken for other purposes. A cross-sectional study was carried out in our institution, which is a tertiary care centre, between September 2013 and September 2015 in which we studied the MR angiograms of 50 patients. Out of the 50 MR angiograms studied, variations were seen in 5 cases. In two cases, the ascending pharyngeal artery was seen to arise from the lateral side instead of the medial side on the left side. In another two, the ascending pharyngeal artery was seen to arise from the occipital artery on the left side. In one case the superior laryngeal artery arose from the external carotid artery. MR angiogram taken for other purposes is an inexpensive, ionizing radiation free method which can be used to study the branching pattern of external carotid artery.

scholarly journals Trifurcation of the right common carotid artery

2008 ◽  
Vol 41 (01) ◽  
pp. 85-88
Author(s):  
R. Chitra
Keyword(s):  
Carotid Artery ◽  
Common Carotid Artery ◽  
Lateral Position ◽  
External Carotid Artery ◽  
External Carotid ◽  
Occipital Artery ◽  
Branching Pattern ◽  
Male Cadaver ◽  
The Right ◽  
Common Carotid Arteries

ABSTRACTVariations in the position of the bifurcation of the common carotid artery and the origin or branching pattern of the external carotid artery are well known and documented. Here, we report the trifurcation of the right common carotid artery in a male cadaver aged about 55 years. The right common carotid artery was found to divide into the external and internal carotids and the occipital artery. High division of bilateral common carotid arteries and a lateral position of the right external carotid artery at its origin were also observed in the same cadaver. There were two ascending pharyngeal arteries on the right side - one from the occipital artery and another from the internal carotid artery. The intraarterial approach is one of the most important routes for the administration of anticancer drugs for head and neck cancers. A profound knowledge of the anatomical characteristics and variations of the carotid artery such as its branching pattern and its position is essential to avoid complications with catheter insertion.

scholarly journals ANATOMICAL VARIATIONS IN THE BRANCHES OF EXTERNAL CAROTID ARTERY IN CADAVERS

2020 ◽  
pp. 1-3
Author(s):  
Prashant Munjamkar ◽  
N. Y. Kamdi
Keyword(s):  
Carotid Artery ◽  
Head And Neck ◽  
External Carotid Artery ◽  
Facial Artery ◽  
External Carotid ◽  
Lingual Artery ◽  
Common Trunk ◽  
Occipital Artery ◽  
External Diameter ◽  
Branching Pattern

Background: External carotid artery (ECA) is the main artery of head and neck region. It has eight named branches to maintain a rich vascularity of most of the structures of head and neck. The present study was undertaken to assess external diameter of ECA at origin and branching pattern of ECA. Methods: A total of 100 carotid specimens of 50 human cadavers (24 males and 26 females) were dissected in the Department of Anatomy at medical colleges and diameter and branching pattern of ECA were noted. Results: The diameter of ECA at its origin was in the ranged between 4.5 to 8 mm with mean of 6.676±0.8053 mm. 77% cases showed normal branching pattern of ECA, the commonest variation was the occurrence of linguofacial trunk (18%) and occipitiauricular trunk (4%). STA and lingual artery (LA) arose commonly from ECA in 71(71%) and 94 cases (94%) respectively. The origin of STA from ECA was statistically significant on left side (56.3%) compare to right (43.7%). Facial artery (FA), occipital artery (OA) and posterior auricular artery (PAA) arises as single branch and common trunk on right and left side. The accessory branches was observed to be present in total 3(3%) cases including 1(33.33%) on right and 2(66.66%) on left side. Conclusion: The present study revealed that the number of branches and branching pattern of ECA is variable and this variations do have a significant role in the various applications of anatomy of ECA for example in embolization, chemotherapy, cervical discectomy, thyroid surgeries etc.

scholarly journals AN UNDOCUMENTED RARE BRANCHING PATTERN OF EXTERNAL CAROTID ARTERY

2020 ◽  
Vol 8 (4.1) ◽  
pp. 7767-7770
Author(s):  
Sonu ◽  
◽  
Sunita Kalra ◽  
Keyword(s):  
Carotid Artery ◽  
Undergraduate Students ◽  
Neck Region ◽  
Anatomical Variations ◽  
External Carotid Artery ◽  
Arterial System ◽  
External Carotid ◽  
Common Trunk ◽  
Occipital Artery ◽  
Branching Pattern

The external carotid arterial system supplies the areas of head and neck region. The knowledge of possible anatomical variations occurring in branching pattern of external carotid artery is crucial especially in the surgeries of head, neck and face; as well as for interpretation of radiological investigations like angiograms. During routine dissection of head and region for undergraduate students we discovered common trunk for lingual, facial and ascending pharyngeal arteries. Also, the occipital artery is arising just before the common trunk from the external carotid artery. KEY WORDS: External carotid artery, branches, common trunk, occipital artery.

scholarly journals Effect of Stellate Ganglion Block on the Cerebrovascular System

2010 ◽  
Vol 113 (4) ◽  
pp. 936-944 ◽  
Author(s):  
Chang-Ki Kang ◽  
Seung-Taek Oh ◽  
Rack Kyung Chung ◽  
Hyon Lee ◽  
Chan-A Park ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Signal Intensity ◽  
Ophthalmic Artery ◽  
Stellate Ganglion ◽  
Stellate Ganglion Block ◽  
External Carotid Artery ◽  
External Carotid ◽  
Ganglion Block

Background Several studies have shown that stellate ganglion block (SGB) is an effective treatment for certain cerebrovascular related diseases; however, the direct effect of SGB on the cerebral vasculature is still unknown. The present study investigated the effect of SGB on the cerebral vascular system using magnetic resonance angiography. Methods Time-of-flight magnetic resonance angiography images of 19 healthy female volunteers (mean ages of 46.4 ± 8.9 yr) were obtained before and after SGB with 1.5-T magnetic resonance imaging. The authors determined successful interruption of sympathetic innervation to the head with the appearance of Horner syndrome and conjunctival injection. We measured changes in the average signal intensity and diameter of the major intracranial and extracranial arteries and their branches, which were presented with mean (±SE). Results The signal intensity changes were observed mainly in the ipsilateral extracranial vessels; the external carotid artery (11.2%, P < 0.001) and its downstream branches, such as the occipital artery (9.5%, P < 0.001) and superficial temporal artery (14.1%, P < 0.001). In contrast, the intensities of the intracranial arteries did not change with the exception of the ipsilateral ophthalmic artery, which increased significantly (10.0%, P = 0.008). After SGB, only the diameter of the ipsilateral external carotid artery was significantly increased (26.5%, P < 0.001). Conclusions We were able to observe significant changes in the extracranial vessels, whereas the intracranial vessels were relatively unaffected (except for the ophthalmic artery), demonstrating that both perivascular nerve control and sympathetic nerve control mechanisms may contribute to the control of intracranial and extracranial blood vessels, respectively, after SGB.

scholarly journals Variations in the Branching Pattern of External Carotid Artery in South Kerala Population – A Cadaveric Study

2021 ◽  
Vol 8 (22) ◽  
pp. 1780-1785
Author(s):  
Manju Sudhakaran ◽  
Mini Alikunju ◽  
Vandana Latha Raveendran ◽  
Umesan Kannanvilakom Govindapillai
Keyword(s):  
Carotid Artery ◽  
Head And Neck ◽  
Carotid Arteries ◽  
Carotid Bifurcation ◽  
External Carotid Artery ◽  
External Carotid ◽  
Superior Thyroid Artery ◽  
South Indian Population ◽  
Branching Pattern ◽  
South Indian

BACKGROUND External carotid arteries account for a major share of arterial supply of head and neck regions. As variations are frequently observed in the branching pattern of external carotid artery, surgeons, radiologists and anaesthetists often encounter difficulties in various procedures of head and neck. The purpose of this study is to describe the variations in the branching pattern of external carotid artery as observed in South Indian population which definitely reduces its iatrogenic injuries associated with surgical and radiological procedures of head and neck. METHODS This is cross-sectional descriptive study. Bilateral neck dissection was done on twenty-two formalin fixed cadavers to study the branching pattern of external carotid artery during a period of two years in the Department of Anatomy in Government Medical College, Alappuzha. Common carotid, external carotid and internal carotid arteries were dissected. All the branches of external carotid artery were traced and the variations were noted. The distance between carotid bifurcation and point of origin of individual branches of external carotid were measured and statistically analyzed. RESULTS In the present study along with normal branching pattern of external carotid artery, variations like origin of superior thyroid artery from common carotid artery and also from carotid bifurcation were seen. A common linguofacial trunk and direct origin of superior laryngeal artery from external carotid artery were also observed. CONCLUSIONS Prior knowledge of the variations will be helpful to surgeons and anaesthetists while dealing with these vessels during procedures of head and neck regions. KEYWORDS External Carotid Artery, Carotid Bifurcation, Superior Thyroid Artery, Linguofacial Trunk

scholarly journals Unilateral variations in the branching pattern of right external carotid artery- a case report

2012 ◽  
Vol 01 (03) ◽  
pp. 136-140
Author(s):  
P Savithri
Keyword(s):  
Case Report ◽  
Carotid Artery ◽  
Lymph Nodes ◽  
Histopathological Examination ◽  
External Carotid Artery ◽  
Facial Artery ◽  
External Carotid ◽  
Lingual Artery ◽  
Branching Pattern ◽  
Muscular Artery

AbstractA case report of anomalous origin and branching pattern of right external carotid artery found during the dissection of human cadavers is reported here. Knowledge of anatomical variations of external carotid artery is especially important in head & neck surgeries. This knowledge is also important for radiologists in the image interpretation. In the case reported here, the right external carotid artery gave direct origin of one of dorsal lingual artery, two stylomastoid arteries, muscular artery and lymph nodal artery along with its normal eight branches. Generally the dorsal lingual arteries are two arising from lingual artery. Contrary to that, in this case the dorsal lingual arteries were found arising one from front of external carotid artery and other from lingual artery, and both these arteries communicated at 4mm beyond their origin. The two stylomastoid arteries arising directly from the front of external carotid artery 4mm above the facial artery were found arising with a gap of 2mm distance from one another. Muscular artery arose directly from the posterior aspect of external carotid artery opposite the anomalous dorsal lingual artery and descended downwards and forwards in its course giving small twigs to surrounding muscles . Lymph nodal artery arising just beside the muscular artery opposite to facial artery passed downwards and laterally and divided into two small twigs to supply a pair of lymph nodes. These lymph nodes are deep cervical nodes measuring about 5x5 mm in size hard in consistency on histopathological examination, found to be nonmalignant.

Computed tomography and magnetic resonance angiography in the evaluation of aberrant origin of the external carotid artery branches

2012 ◽  
Vol 34 (5) ◽  
pp. 393-399 ◽  
Author(s):  
Salvatore Cappabianca ◽  
Assunta Scuotto ◽  
Francesco Iaselli ◽  
Nicoletta Pignatelli di Spinazzola ◽  
Fabrizio Urraro ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
External Carotid Artery ◽  
External Carotid

Selective Occipital Artery Sonography for Dural Arteriovenous Fistulas

2012 ◽  
Vol 25 (2) ◽  
pp. 212-216
Author(s):  
K. Kono ◽  
M. Mori ◽  
Y. Wakugawa ◽  
M. Yasaka ◽  
Y. Okada ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Resistance Index ◽  
Duplex Sonography ◽  
External Carotid Artery ◽  
External Carotid ◽  
Occipital Artery ◽  
Arteriovenous Fistulas ◽  
Carotid Duplex ◽  
Dural Arteriovenous Fistulas ◽  
Artery Detection

Carotid duplex sonography is a useful method for evaluation of dural arteriovenous fistulas. The resistance index of the external carotid artery has been reported to correlate with the efficacy of treatment and recurrence or aggravation of dural arteriovenous fistulas. Herein, we describe a case of dural arteriovenous fistulas mainly supplied by the occipital artery and show that the resistance index of the occipital artery was more sensitive than that of the external carotid artery. To the best of our knowledge, this is the first report to describe the feasibility of occipital artery detection by carotid duplex sonography and clinical application of the resistance index of the occipital artery for dural arteriovenous fistulas.

scholarly journals Retinal Embolization and Cerebellar Asymptomatic Embolization after Carotid Stenting Using Distal Balloon Protection

2003 ◽  
Vol 9 (3) ◽  
pp. 311-314 ◽  
Author(s):  
S. Islam ◽  
H. Manabe ◽  
S. Hasegawa ◽  
A. Takemura ◽  
M. Nagahata ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Ophthalmic Artery ◽  
Carotid Stenting ◽  
External Carotid Artery ◽  
External Carotid ◽  
Occipital Artery ◽  
Cerebral Embolization ◽  
Intracranial Arteries ◽  
Balloon Protection ◽  
Meningeal Artery

We describe a rare case of having both symptomatic ipsilateral retinal embolization and asymptomatic cerebellar embolization occurring after carotid stenting with use of distal protect device. In this case, external carotid angiograms revealed accessory meningeal artery-ophthalmic artery and occipital artery-vertebral artery anastomoses. This case suggested that the protection for external carotid artery should be considered during carotid stenting to avoid retinal embolization and cerebellar or cerebral embolization in cases showing angiographical anastomoses between external carotid artery and ophthalmic artery or intracranial arteries.

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