The purpose of the study is to enroll participants with uncontrolled asthma to evaluate the large and small airways and drug delivery utilizing two study drugs: * Beclometasone dipropionate/Formoterol fumarate dihydrate/Glycopyrronium bromide (BDP/FF/G) or Trimbow * Fluticasone furoate/Umeclidinium/Vilanterol (FluF/UMEC/VI ) or Trelegy Ellipta
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Evaluate the effect of extrafine beclomethasone dipropionate/formoterol fumarate /glycopyrrolate compared with non-extrafine fluticasone furoate/ umeclidinium/vilanterol on ventilation defect percentage utilizing 129Xenon MRI.
Timeframe: 8 weeks