Inclusion Criteria:

1. Patient for whom there is an indication of PET/CT 18FDG imaging for thoracic oncology
; this indication is consistent with the Standard Options Recommendations or was
validated during Multidisciplinary Consultation Meeting :

- Either an extension assessment of non-small cell lung cancer;

- Either the characterization of single pulmonary nodule; Or - the definition of
the target volume in radiotherapy.

2. Patient who meets the following criteria to be eligible for an PET/CT imaging:

- Patient able to maintain a supine position for 60 minutes

- Patient with no bronchopulmonary infection and with no upper aero digestive
tract acute infection in progress (increased risk of false positives)

3. Age ≥ 18 years

4. WHO ≤ 1

5. Well-informed written consent signed by the patient and collected before any specific
procedure in the study

6. Patient member in a national insurance scheme

Exclusion Criteria:

1. Patient with a bronchial carcinoid or bronchoalveolar cancer

2. Patient with acute bronchopneumopathy

3. Not stabilized diabetic patient

4. Patient with an absolute indication against spirometry: ongoing pneumothorax or
within the previous month, pleural biopsy or puncture within the previous month,
hemoptysis, severe asthma, tuberculosis

5. Any usual relative indication against spirometry: ongoing bronchial infections,
acute asthma, decompensation of chronic respiratory failure, respiratory pain

6. Any usual formal indication against imaging examination PET/CT (important
claustrophobia)

7. Patient unable to follow study procedures

8. Pregnant women or nursing mothers can not participate in the study

9. Men and women of childbearing age must use effective contraception at study entry and
throughout the study

10. Any other medical conditions making the inclusion of the patient in the study
inappropriate in the opinion of the investigator

11. Patient under legal guardianship