Investigation of Relation Between Visceral and Subcutaneous Abdominal Fat Volumes and Calcified Aortic Plaques Via Multislice Computed Tomography

Abstract

Objective: The present study investigated effect of subcutaneous fat volume and abdominal visceral fat volume on aortic atherosclerosis via multislice computed tomography.

Materials and methods: The present study comprised 424 subjects who underwent non-contrast-enhanced abdominal CT in our clinic between June 2012 and June 2013. Using dedicated software visceral fat volume was calculated for each individual and then subcutaneous fat volume was calculated by subtracting visceral fat volume from total fat volume. By dividing visceral fat volume/subcutaneous fat volume participants were assigned to three groups according to their mean visceral fat volume/subcutaneous fat volume: Group 1 consisted of subjects with visceral fat volume/subcutaneous fat volume lower than 0.48 (Group 1< 0.48); Group 2 consisted of subjects with visceral fat volume/subcutaneous fat volume equal to or higher than 0.48 and lower than 0.69 (0.48 <= Group 2< 0.69); and Group 3 consisted of subjects with visceral fat volume/subcutaneous fat volume equal to or higher than 0.69 (Group 3 >= 0.69).

Results: The mean abdominal aortic calcium scores according to Agatston scoring (au) were 136.8 +/- 418.7 au in Group 1, 179.9 +/- 463 au in Group 2 and 212.2 +/- 486.9 in Group 3, respectively.

Conclusions: We have demonstrated a significant correlation between visceral fat volume and abdominal aorta atherosclerosis, while there was absence of significant correlation between subcutaneous fat volume and abdominal atherosclerosis.