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Fig. 3 | European Radiology Experimental

Fig. 3

From: Vector-field dynamic x-ray (VF-DXR) using optical flow method in patients with chronic obstructive pulmonary disease

Fig. 3

A 53-year-old made, COPD patient with FEV1% 60.3 and %FEV1 79.6, which meets the criteria of GOLD 2, COPD mild group. VF-DXR images: (a) tidal inspiratory, (b) tidal expiratory, (c) forced inspiratory, and (d) forced expiratory phase. The graph (e) shows the temporal change between LMV in the right lung and the number of frames. The frame rate is set to 5 frames/s. COPD Chronic obstructive pulmonary disease, FEV1% Forced expiratory volume percent in one second divided by forced vital capacity, %FEV1 Percent predicted forced expiratory volume in one second, GOLD Global initiative for chronic obstructive lung disease, LMV Lung motion velocity, VF-DXR Vector-field dynamic x-ray

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