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Linear regressions of AiDA radius (with 95% CI) as a function of quantitative MRI density measures: (A) mean lung density, (B) relative area under 7.5%, (C) 15th percentile proton density.
Abbreviations: AiDA, Airspace Dimension Assessment with nanoparticles; MLD, mean lung density; PD15, 15th percentile proton density; RA7.5, relative area under 7.5% PD.
