Publications by authors named "Choon Hee Sohn"
Objective: To evaluate the influence of lung volume on dependent lung opacity seen at thin-section CT.
Materials And Methods: In thirteen healthy volunteers, thin-section CT scans were performed at three levels (upper, mid, and lower portion of the lung) and at different lung volumes (10, 30, 50, and 100% vital capacity), using spirometric gated CT. Using a three-point scale, two radiologists determined whether dependent opacity was present, and estimated its degree.