Table 2.
Different utilization ratios of imaging methods for lung cancer
| Imaging methods | Nationwide N† (%)‡ |
High economic level areas N (%) |
Low economic level areas N (%) |
χ2 | P |
|---|---|---|---|---|---|
| Chest X‐ray | 2691 (37.46%) | 896 (25.83%) | 1795 (48.32%) | 387.27 | < 0.001 |
| Chest CT | 5552 (77.28%) | 3026 (87.23%) | 2526 (67.99%) | 378.05 | < 0.001 |
| Chest MRI | 57 (0.79%) | 34 (0.98%) | 23 (0.62%) | 2.97 | 0.085 |
| PET‐CT | 448 (6.24%) | 296 (8.53%) | 152 (4.09%) | 60.51 | < 0.001 |
| Abdominal ultrasound | 4993 (69.50%) | 2596 (74.83%) | 2397 (64.52%) | 90.00 | < 0.001 |
| Neck ultrasound | 2638 (36.72%) | 1267 (36.52%) | 1371 (36.90%) | 0.11 | 0.738 |
| Brain CT | 2509 (34.92%) | 1284 (37.01%) | 1225 (32.97%) | 12.88 | 0.002 |
| Brain MRI | 2211 (30.78%) | 1510 (43.53%) | 701 (18.87%) | 512.00 | < 0.001 |
| Bone MRI | 319 (4.44%) | 121 (3.49%) | 198 (5.33%) | 14.34 | < 0.001 |
| Bone scintigraphy | 4238 (59.00%) | 2485 (71.63%) | 1753 (47.19%) | 443.20 | < 0.001 |
†
The number and
‡
proportion of patients examined via the imaging method in the region. CT, computed tomography; MRI, magnetic resonance imaging; PET, positron emission tomography.