Effect of body position changes on lung CT image in rabbits with oleic acid induced acute respiratory distress syndrome

Abstract:

Objective In recent years, oversea researchers have found there are “dependent regions” in acute respiratory distress syndrome (ARDS) lung computed tomography (CT). This study aims to explore the changes of lung CT image in rabbits with oleic acid induced ARDS and the effect of body position changes on CT image. Methods The model of rabbit ARDS was induced using oleic acid. The rabbits with ARDS all underwent lung spiral CT scans and were divided into six groups according to the body position of scans. Results Lung CT showed a dependent region and non-dependent region, and the image alteration of two regions was induced by the change of the body position. The gravitational effect was reduced after continuous rotation of body position at an equal speed. Conclusions The continuous rotation of body position can relieve the severity of compressive lung collapse in ARDS.