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

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 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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