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VF-DXR with different frame rates. 41-year-old female with no smoking history. Vector field images in inspiratory phase with (a) 15 fps, (b) 7.5fps, (c) five fps, (d) three fps, and (e) 1.5 fps and those in expiratory phase with (f) 15 fps, (g) 7.5fps, (h) five fps, (i) three fps, and (j) 1.5 fps.
