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. 2024 Nov 29;14:29727. doi: 10.1038/s41598-024-80326-0

Fig. 1.

Fig. 1

Analysis Flowchart. X-ray projections were captured over 15 breath points and reconstructed into time-resolved CT volumes. These CTs were then filtered, masked, and analysed to produce the final outputs; a lung expansion histogram and a ‘projected thickness of air’ (PTA) image.