[18F]FDG PET/MR to assess disease extension and inflammation in children and young adults with primary ciliary dyskinesia.

Correlation between morphologic (MR and CT) and metabolic (PET) scores The bronchiectasis score, as calculated on both HRCT and MR, significantly correlated with the PET MIV ( p = 0.03, r s =0.56 [95%CI 0.08 to 0.83] and p = 0.009, r s =0.64 [95%CI 0.19 to 0.86] respectively), while the correlation with the PET SUV mean was only marginally significant ( p = 0.049, r s =0.5 [95%CI −0.008 to 0.86] and p = 0.06, r s =0.49 [95%CI −0.03 to 0.80] respectively) Tree-in-bud score, as calculated on HRCT but not on MR scans, significantly correlated with MIV ( p = 0.03, r s =0.56 [95%CI 0.07 to 0.83]).

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