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. 2021 Mar 16;31(9):6640–6651. doi: 10.1007/s00330-021-07798-w

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© The Author(s) 2021, corrected publication 2021

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Fig. 2 — Flowchart depicting exclusion criteria. In 2 of the 37 patients primarily included, no PFT was performed within 2 months after the CT examination. Three patients were excluded due to registration errors. The FVC, lung volume, and mean lung density measurements were available for the remaining 32 patients. For 6 patients, the DLCO values were missing