Table 1. Patient background data.
| Patient No. | Disease | Part of body examined in CT scan | Days from CT scan to PB collection | Treatment#1 | Smoking status | Past CT examination#3 | Other X-ray examinations#4 |
|---|---|---|---|---|---|---|---|
| 1 | Lung cancer | Chest | 8 | Operation | (−) | (+) | Chest, UGI, PET |
| 2 | Lymphoma | Cervix, Chest, Abdomen, Pelvis | 3 | Chemotherapy | (−) | (+) | Chest, UGI |
| 3 | Lymphoma | Chest, Abdomen, Pelvis | 11 | Chemotherapy & Radiotherapy | (−) | (+) | Chest, UGI, PET |
| 4 | Chest abnormal shadow | Chest | 15 | (−) | (−) | (+) | Chest, UGI |
| 5 | Chest abnormal shadow | Chest | 22 | (−) | (+)#2 | (+) | Chest, UGI |
| 6 | Lymphoma | Chest, Abdomen, Pelvis | 14 | Chemotherapy | (−) | (+) | Chest, UGI |
| 7 | Lymphoma | Cervix, Chest, Abdomen, Pelvis | 2 | Chemotherapy & Radiotherapy | (+)#2 | (+) | Chest, UGI, PET |
| 8 | Lymphoma | Cervix, Chest, Abdomen, Pelvis | 28 | Chemotherapy | (−) | (+) | Chest, UGI |
| 9 | Lymphoma | Chest, Abdomen, Pelvis | 7 | Chemotherapy | (+)#2 | (+) | Chest, UGI, PET |
| 10 | Chest abnormal shadow | Chest | 14 | (−) | (−) | (+) | Chest, UGI |
#1Chemotherapy or radiotherapy had been performed at least five years before this study.
#2These patients had given up smoking at least ten years before this study.
#3All patients except one (No. 10) took examinations of CT scanning more than 5 times during the past 5 years.
#4UGI: X-ray examination of the upper gastrointestinal tract, PET: positron emission tomography.