1. HOW READ CHEST CT -1
ANAS SAHLE ,MD

2. Basic elements
Appearance
pattern
Distribution
Patient data
pattern
Ct
interpretation

3. Appearance pattern
Increased Decreased
Nodular Linear
lung lung
opacities opacities
attenuation attenuation

4. Increased lung attenuation
Ground-glass opacity
Consolidation

5. Decreased lung attenuation
Hypo-perfusion
Air-trapping
Cyctic,cyct-like lesions
Pulmonary emphysema

6. Nodular pattern
Size
Appearance
Attenuation
Distribution

7. Linear pattern
When the interstitium is
thickened?
When lymphatics are involved?
When blood vessels, airways are
involved?
When lung atelectasis or fibrosis
occurs?

8. Distribution pattern
Upper Lower
Diffuse Central peripheral
lung lung

9. Upper Lower
Diffuse
lung lung
LCH Oedema Hyper-sensitivity
pneumonitis
Sarcoidosis UIP
Silicosis NSIP
LAM
Pneumocoiosis DIP
Tuberculosis COP
Diffuse pneumonia
Respiratory bronchiolitis Asbestosis
Cystic fibrosis Lipoid pneumonia
Metastses
Chronic eosinophylic
Metastses
pneumonia
Centilobular emphysema Alveolar hemorrhage
Sarcoidosis
Paraseptal emphysema Panlobular emphysema

10. Central peripheral
UIP
Sarcoidosis
NSIP
DIP
Silicosis AIP
PE
COP
Lymphangitic spread of tumors
Asbestosis
Chronic eosinophylic pneumonia
Alveolar protenosis Hyper-sesitivity pneumonitis
Septic emboli
Metastses
Large airway disease
Small airway disease