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Application of an Optical Flow Method to Inspiratory and Expiratory Lung MDCT to Assess Regional Air Trapping: A Feasibility Study

¹ All authors: Department of Radiology, University of Pennsylvania School of Medicine and Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA 19104-4283.

OBJECTIVE. We describe the application of an optical flow method to inspiratory and expiratory high-resolution volumetric lung MDCT for the assessment of regional air trapping.

CONCLUSION. Qualitative and quantitative assessment of regional air trapping is feasible using an optical flow method to align volumetric MDCT data sets.

Keywords: air trapping • airway • chest imaging • functional lung imaging • high-resolution CT • lung disease • MDCT

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