<unk>  may be helpful in distinguishing obstructive causes of<unk>  from non-obstructive causes.<unk>  does not play a significant role in the diagnosis of<unk> .
Atelectasis MRI
Chronic bronchitis CT
Atelectasis physical examination
Atelectasis CT
Bronchiectasis CT
Eosinophilic pneumonia CT
Occupational lung disease CT
Chronic obstructive pulmonary disease CT