Patent Document ID: 8929623
Application ID: 12913580
Patent Flag: 1

Claim One:
1. A method for aiding determination of Obstructive Sleep Apnea (OSA), comprising: obtaining a medical image; establishing an upper airway model according to the medical image; defining a narrowest cross-section having a smallest cross-sectional area orthogonal to a skull axis in the upper airway model and defining a nasopharyngeal boundary cross-section orthogonal to the skull axis in the upper airway model; calculating a cross-sectional area of the narrowest cross-section and a cross-sectional area of the nasopharyngeal boundary cross-section; calculating a stenosis rate according to the cross-sectional area of the narrowest cross-section and the cross-sectional area of the nasopharyngeal boundary cross-section; generating an internal mesh data of the upper airway model; setting a boundary condition comprising an inlet region, an outlet region, and a respiratory gas amount; performing a respiratory flow field simulation according to the upper airway model, the internal mesh data, and the boundary condition, so as to obtain a flow field pressure distribution of the upper airway model; calculating an upper airway pressure difference according to the flow field pressure distribution; and establishing a first relation curve between the stenosis rate and the upper airway pressure difference, for aiding determination.