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Fig. 5B —Simulations of artifacts generated by bubble motion during CT
acquisition. First column shows acquisition process; center column, resulting
sinogram after filtering; and last column, reconstructed image. Three viewing
directions (V1 = 0°, V2 = 90°, V3 = 180°) are shown for 180°
acquisition and for corresponding rows in sinogram. Arrows indicate distance
traveled by bubble during acquisition. Stationary bubble (A) and bubble
velocity of 20 cm/s with gantry rotation period of 0.35 second (B).
