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Abstract #4819

Differentiating patients with asthma and/or chronic obstructive pulmonary disease using lung T1 and M0

Paul John Clifford Hughes1, Helen Marshall1, Laurie Smith1, Demi Jakymelen1, Alberto Biancardi1, Guilhem Collier1, Ho-Fung Chan1, Martin Brook1, Joshua Astley1, Ryan Munro1, Smitha Rajaram1, Andy Swift1, David Capener1, Jody Bray1, James Ball1, Oliver Rodgers1, Bilal Tahir1, Madhwesha Rao1, Graham Norquay1, Nicholas Weatherley1, Leanne Armstrong1, Latife Hardaker2, Titti Fihn-Wikander3, Rod Hughes4, and Jim Wild1
1POLARIS, University of Sheffield MRI Unit, IICD, The University of Sheffield, Sheffield, United Kingdom, 2Priory Medical Group, York, United Kingdom, 33BioPharmaceuticals Medical, AstraZeneca, Gothenburg, Sweden, 4Early Development Respiratory, AstraZeneca, Cambridge, United Kingdom

Synopsis

Keywords: Lung, LungDirecting treatment based on diagnosis is important in patients suffering with respiratory disease. This work investigated the ability of whole-lung mean T1 and M0, and measures of heterogeneity (median coefficient of variation and its interquartile range) to differentiate between patients with asthma and/or COPD and correlated these metrics with 129Xe ventilation and diffusion MRI and pulmonary function test metrics. Measures of heterogeneity of T1 and M0 correlated with lung function test outcomes and sensitive measures of lung function derived from 129Xe MRI and had the ability to separate patients with asthma+COPD and COPD from patients with asthma alone.

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Keywords