scholarly journals Imaging spectrum and prevalence of variant branching pattern of aortic arch

2019 ◽  
Vol 7 (4) ◽  
pp. 1313
Author(s):  
Vipin Krishnan K. V. ◽  
Varun Narayan ◽  
Niyaz Ibrahim ◽  
John Mathew ◽  
Sheen Maria James
Keyword(s):  
Computed Tomography ◽  
Aortic Arch ◽  
Subclavian Artery ◽  
Aberrant Right Subclavian Artery ◽  
Left Vertebral Artery ◽  
Branching Pattern ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Variant Anatomy

Background: Variant branching patterns of the aortic arch are not infrequent but are commonly under reported. This study was conducted to determine the spectrum of Variant branching pattern of aortic arch and their prevalence using contrast enhanced computed tomography (CECT) images of the cases from a tertiary care centre.Methods:  Contrast enhanced computed tomography (CECT) images of aortic arch region from 1116(629 male and 487 female) cases from 18 to 85 years of age were examined retrospectively. The images were reviewed for normal and variant anatomy of aortic arch and the results were analyzed statistically.Results: Of 1116 patients, 878 (78.6%) cases showed normal and 238 (21.3%) cases had variant branching pattern of the aortic arch. The most common variation was the common origin of brachiocephalic trunk (BCT) and the left common carotid artery (LCCA) which was observed in 160 (14.3%) cases. In 8 (0.7%) cases, BCT and LCCA took origin from a single common trunk arising from the aortic arch. In 60(5.4%) cases, the left vertebral artery (LVA) originated directly from the aortic arch between the origin of the LCCA and left subclavian artery (SCA). 8 (0.7%) cases had aberrant right subclavian artery. Two (0.2%) cases showed right aortic arch.Conclusions: Interventional radiologists and surgeons should be well aware of variant anatomy of aortic arch. Contrast CT is a highly reliable imaging method for demonstrating anatomical features and variations of the arch.

scholarly journals Unusual symptomatic late onset presentation of aberrant right subclavian artery: report of two cases and short literature review

2017 ◽  
Vol 87 (1) ◽  
Author(s):  
Yannis Dimitroglou ◽  
Ioannis Loulakas ◽  
Maria Chounti ◽  
Michail Megalakakis ◽  
Eleni Karavana ◽  
...  
Keyword(s):  
Subclavian Artery ◽  
Surgical Intervention ◽  
Late Onset ◽  
Incidental Finding ◽  
Aberrant Right Subclavian Artery ◽  
Barium Swallow ◽  
Main Symptom ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

Aberrant subclavian arteries are congenital vascular anomalies that usually do not cause any symptoms. When symptomatic they are considered as a rare cause of dysphagia. This presentation is known as dysphagia lusoria. They are diagnosed by barium swallow or contrast-enhanced computed tomography, although it may be an incidental finding. Management varies from life modifications and drug therapy to surgical intervention. We report two cases of the unusual form of late onset symptomatic presentation because of the presence of aberrant right subclavian artery. Main symptom was chest pain without dysphagia. Due to age and medical comorbidities both patients where managed conservatively.

scholarly journals Anatomical Variations of Celiac Trunk and Its Branching Pattern with Special Reference to Surgical Implications in Mysore Based Population

2021 ◽  
Vol 10 (37) ◽  
pp. 3225-3230
Author(s):  
Vidya C.S ◽  
Shivanakarappa C. ◽  
Sudha Kiran Das ◽  
Santh Kumar
Keyword(s):  
Computed Tomography ◽  
Hepatic Artery ◽  
Celiac Trunk ◽  
Type I ◽  
Branching Pattern ◽  
Anatomic Variations ◽  
Contrast Enhanced ◽  
Coeliac Trunk ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

BACKGROUND Celiac trunk (CT) is the first major abdominal branch of the aorta. Anatomic variations and accessory vessels have been reported with variable percentages. We report here a particularly rare variant involving absence of the celiac trunk in association with trifurcation of the common hepatic artery (CHA). The purpose of this study was to report the pattern of the celiac trunk and its anatomic variations in a sample of Mysore population. METHODS Celiac trunk dissection was performed in 10 fresh cadavers and 50 cases of contrast enhanced computed tomography (CECT) images of Mysore based subjects at JSS Medical College and Hospital aged 18 years and above were included. Celiac trunk variations, length, diameter, accessory vessels, and vertebral level of origin were described. RESULTS The branching pattern of coeliac trunk was observed in 60 cases (37 males, 23 females) by dissection and CECT scan method. Type I was found in 48 cases (80 %), Type I form 2a was found in 2 cases (3.3 %). Type II form 1 in 6 cases (10 %). Type III was observed in 1 case and in another case left hepatic artery (LHA) arising from coeliac trunk, Type VII was found in 2 cases (3.3 %). The length and diameter of coeliac trunk were analysed using descriptive statistics and mean ± SD for length was 1.8 ± 0.4 and diameter 0.5 ± 0.2 respectively. CONCLUSIONS Awareness of CT variations is important in surgical resection, transplantation, and interventional radiology procedure. KEY WORDS Celiac Trunk, Variations, Morphometry, Contrast Enhanced Computed Tomography Scan Method

Anatomical variations of aortic arch branching: evaluation with computed tomographic angiography

2013 ◽  
Vol 24 (3) ◽  
pp. 485-493 ◽  
Author(s):  
Alper Karacan ◽  
Aysel Türkvatan ◽  
Keziban Karacan
Keyword(s):  
Aortic Arch ◽  
Subclavian Artery ◽  
Computed Tomographic Angiography ◽  
Aberrant Right Subclavian Artery ◽  
Left Vertebral Artery ◽  
Branching Pattern ◽  
Computed Tomographic ◽  
Tomographic Angiography ◽  
Type 3

AbstractPurpose: The aim of this study was to investigate the frequency and gender distribution of variations in the aortic arch branching pattern using 64-slice computed tomograhic angiography. Materials and methods: A total of 1000 patients with a normal left-sided aortic arch who underwent computed tomographic angiography for various reasons were analysed retrospectively for the frequency of variation of aortic arch branching; the variations were categorised into seven types. Results: Of the 1000 patients, 79.2% had a normal aortic arch branching pattern – type 1 – and 20.8% had variations. The frequency of type 2 variation – brachiocephalic and left common carotid arteries arising from the aortic arch in a common trunk – was 14.1%, that of type 3 – left vertebral artery originating from the aortic arch – was 4.1%, that of type 4 – coexistence of type 2 and type 3 – was 1.2%, that of type 5 – aberrant right subclavian artery – was 0.6%, that of type 6 – coexistence of aberrant right subclavian artery and bicarotid trunk – was 0.7%, and that for type 7 – thyroidea ima artery arising from the aortic arch – was 0.1%. The incidences of the variations of aortic arch branching were similar among males and females (20% versus 22.1%). The incidence of an aberrant right subclavian artery – type 5 and type 6 – was higher among females compared with males (2.5% versus 0.5), whereas the frequencies of the other variations were either equal or similar in both genders. Conclusion: Recognition of variations of aortic arch branching is important because they may cause symptoms due to tracheoesophageal compression or complications during surgical or endovascular interventional procedures of the aorta and its branches.

scholarly journals Variations in the Branching Pattern of the Aortic Arch Detected with Computerized Tomography Angiography

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Pasaoglu Lale ◽  
Ugur Toprak ◽  
Gökhan Yagız ◽  
Tunca Kaya ◽  
Sadık Ahmet Uyanık
Keyword(s):  
Aortic Arch ◽  
Ct Angiography ◽  
Subclavian Artery ◽  
Left Subclavian Artery ◽  
Right Aortic Arch ◽  
Aberrant Right Subclavian Artery ◽  
Left Vertebral Artery ◽  
Imaging Method ◽  
Branching Pattern ◽  
Brachiocephalic Trunk

Objectives. The aim was to determine the prevalence of aortic arch variations in 881 patients who underwent neck CT angiography for various reasons. Material and Methods. 881 patients were included in the study who had undergone neck CT angiography between 2010 and 2013. Results. Of 881 patients, 770 (87.4%) patients with classic branching pattern of the aortic arch (AA) were observed. Variations in branching pattern were seen in 111 (12.6%) patients. The most common variation was the origination of the left common carotid artery (LCCA) from the brachiocephalic trunk (BCT). This pattern was observed in 64 (7.2%) cases. In 25 (2.8%) cases, the left vertebral artery (LVA) originated directly from the AA between the origin of the LCCA and left subclavian artery (SCA). 17 (1.9%) cases had aberrant right subclavian artery. Three (0.3%) cases showed right aortic arch. Two cases had right aortic arch with aberrant left subclavian artery. Conclusions. Variations in the branching pattern of the AA are not rare. Head and neck surgeons and interventional radiologists should be aware of aortic arch variations. CTA is a reliable imaging method for demonstrating anatomical features and variations of the AA.

scholarly journals Porcine Ex Vivo Liver Phantom for Dynamic Contrast-Enhanced Computed Tomography

2011 ◽  
Vol 46 (9) ◽  
pp. 586-593 ◽  
Author(s):  
Scott M. Thompson ◽  
Juan C. Ramirez-Giraldo ◽  
Bruce Knudsen ◽  
Joseph P. Grande ◽  
Jodie A. Christner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ex Vivo ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Liver Phantom ◽  
Contrast Enhanced Computed Tomography

scholarly journals Contrast enhanced computed tomography findings in 105 horse distal extremities.

2021 ◽  
pp. 103704
Author(s):  
Frederik Pauwels ◽  
Angela Hartmann ◽  
John Al-Alawneh ◽  
Paul Wightman ◽  
Jimmy Saunders
Keyword(s):  
Computed Tomography ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

scholarly journals Self-navigated 3D whole-heart MRA for non-enhanced surveillance of thoracic aortic dilation: a comparison to CTA

2021 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
P Poskaite ◽  
M Pamminger ◽  
C Kranewitter ◽  
C Kremser ◽  
M Reindl ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Aortic Aneurysm ◽  
Thoracic Aortic Aneurysm ◽  
Aortic Dilation ◽  
Subjective Image Quality ◽  
Contrast Enhanced ◽  
Whole Heart ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

Abstract Funding Acknowledgements Type of funding sources: None. Background The natural history of thoracic aortic aneurysm (TAA) is one of progressive expansion. Asymptomatic patients who do not meet criteria for repair require conservative management including ongoing aneurysm surveillance, mostly carried out by contrast-enhanced computed tomography angiography (CTA). Purpose To prospectively compare image quality and reliability of a prototype non-contrast, self-navigated 3D whole-heart magnetic resonance angiography (MRA) with contrast-enhanced computed tomography angiography (CTA) for sizing of thoracic aortic aneurysm (TAA). Methods Self-navigated 3D whole-heart 1.5 T MRA was performed in 20 patients (aged 67 ± 8.6 years, 75% male) for sizing of TAA; a subgroup of 18 (90%) patients underwent additional contrast-enhanced CTA on the same day. Subjective image quality was scored according to a 4-point Likert scale and ratings between observers were compared by Cohen’s Kappa statistics. Continuous MRA and CTA measurements were analyzed with regression and Bland-Altman analysis. Results Overall subjective image quality as rated by two observers was 1 [interquartile range (IQR) 1-2] for self-navigated MRA and 1.5 [IQR 1-2] for CTA (p = 0.717). For MRA a perfect inter-observer agreement was found for presence of artefacts and subjective image sharpness (κ=1). Subjective signal inhomogeneity correlated highly with objectively quantified inhomogeneity of the blood pool signal (r = 0.78-0.824, all p <0.0001). Maximum diameters of TAA as measured by self-navigated MRA and CTA showed excellent correlation (r = 0.997, p < 0.0001) without significant inter-method bias (bias -0.0278, lower and upper limit of agreement -0.74 and 0.68, p = 0.749). Inter- and intraobserver correlation of aortic aneurysm as measured by MRA was excellent (r = 0.963 and 0.967, respectively) without significant bias (all p ≤ 0.05). Conclusion Self-navigated 3D whole-heart MRA enables reliable contrast- and radiation free aortic dilation surveillance without significant difference to standardized CTA while providing predictable acquisition time and by offering excellent image quality. Abstract Figure.

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