Efficiency and reproducibility in pulmonary nodule detection in simulated dose reduction lung CT images Takeshi Kubo, Ayami Ohno Kishimoto, Kaori Togashi

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Efficiency and reproducibility in pulmonary nodule detection in simulated dose reduction lung CT images Takeshi Kubo, Ayami Ohno Kishimoto, Kaori Togashi European Journal of Radiology Open Volume 6, Pages 113-118 (January 2019) DOI: 10.1016/j.ejro.2019.02.001 Copyright © 2019 Terms and Conditions

Fig. 1 Area of ground-glass opacity in the right lower lobe measuring 7 mm was detected by a reader on the original image (left) but missed on the simulation A image (middle) and simulation B image (right). Another 5-mm solid nodule (not shown) is found in the right middle lobe and identified on both original and simulation images. European Journal of Radiology Open 2019 6, 113-118DOI: (10.1016/j.ejro.2019.02.001) Copyright © 2019 Terms and Conditions

Fig. 2 Area of ground-glass opacity measuring 21 mm in the left upper lobe was detected by a reader on the original image (left) and simulation A image (middle) and missed on simulation B image (right). The increased noise and streak artifacts decrease disease conspicuity. European Journal of Radiology Open 2019 6, 113-118DOI: (10.1016/j.ejro.2019.02.001) Copyright © 2019 Terms and Conditions

Fig. 3 A solid 5-mm nodule in the left upper lobe is depicted in the original image (left) with a well-defined border. The margin of the nodule become blurred by the overlapping streak artifacts in simulation A image (middle) and almost effaced in simulation B image (right). European Journal of Radiology Open 2019 6, 113-118DOI: (10.1016/j.ejro.2019.02.001) Copyright © 2019 Terms and Conditions