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. Author manuscript; available in PMC: 2020 Jan 1.

Published in final edited form as: Pac Symp Biocomput. 2020;25:139–148.

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Open Access chapter published by World Scientific Publishing Company and distributed under the terms of the Creative Commons Attribution Non-commercial (CC BY-NC) 4.0 License.

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Fig. 1. — Low- and high-energy CT images with and without noise reduction. The difference images in column three are obtained by subtracting the denoised images from the raw images. All images are displayed in (C=0HU and W=500HU).