CT scan is used to diagnose<unk><unk>  pneumonia. Various findings seen on CT scan are subpleural and 
peribronchovascular consolidation, ground-glass attenuation and nodules, irregular linear opacities, bronchial wall thickening and dilatation and reverse halo sign (atoll sign).
Cryptogenic organizing pneumonia CT
Eosinophilic pneumonia CT
Cryptogenic organizing pneumonia MRI
Hypersensitivity pneumonitis CT
Chronic bronchitis CT
Multi-drug-resistant tuberculosis CT
Lung abscess CT
Lipoid pneumonia MRI