Variations in the Ventral Branches of Abdominal Aorta by Computed Tomography: A Cross-sectional Study
Dr. Monika Gupta,
House No. 19184, Street No. 8, Opposite D.A.V. College, Bathinda, Punjab, India.
Introduction: Computed Tomography is an advanced imaging technique of radiography which gives good information regarding vascular anatomy. Abdominal aorta and its branches show variations in their origin. The present study may facilitate the clinicians and surgeons for planning treatment and thus, post-treatment complications may be reduced.
Aim: To find out the variations in the origin of ventral branches of abdominal aorta in relation to vertebrae and diameters of these arteries at their level of origin.
Materials and Methods: A descriptive cross-sectional study was done on Contrast Enhanced Computed Tomography scan films of abdomen of 300 patients. The duration of study was of two years and four months, from September 2020 to January 2022. To determine the level of origin of ventral branches of abdominal aorta, every branch was divided into four types (Type I to IV) depending on the level of origin in relation to intervertebral disc, upper 1/3rd, middle 1/3rd and lower 1/3rd of body of corresponding vertebra. Diameter of each branch was measured at its level of origin.
Results: Statistical analysis of data had shown that the most common origin of Celiac Trunk (CT) was at the level of T12 vertebra (44.33%), for Superior Mesenteric Artery (SMA), the most common origin was at the level of L1 vertebra (64%) and for Inferior Mesenteric Artery (IMA), the most common origin was at the level of L3 vertebra (68.67%). Mean diameter of CT, SMA and IMA was 5.91±0.48 mm, 5.86±0.40 mm and 3.13±0.44 mm, respectively. Variations in the level of origin have significant correlation to vertebra (Pearson’s correlation coefficient=0.01).
Conclusion: The CT, SMA and IMA have shown variations in their level of origin and significant correlation with each other in relation to corresponding vertebra. This knowledge can be helpful to the clinicians and surgeons while planning treatment of abdominal organs.