Table 2.
Viewing frequency for the top three clinical indications for different exam types included in the study. The percentages refer to the proportion of viewing frequencies for the stated clinical indications
| Clinical indications | Total (%) | 1 view | 2–5 views | ≥ 6 views |
|---|---|---|---|---|
| Head CT | ||||
| CVA | 6074 (17%) | 490 (8%) | 1960 (32%) | 3624 (60%) |
| Trauma | 5770 (16%) | 1805 (31%) | 2423 (42%) | 1542 (27%) |
| Altered consciousness | 4288 (12%) | 1038 (24%) | 1966 (46%) | 1284 (30%) |
| Head MR | ||||
| Malignancy | 5468 (16%) | 1149 (21%) | 2581 (47%) | 1738 (32%) |
| Benign neoplasm | 3101 (9%) | 715 (23%) | 1532 (49%) | 854 (28%) |
| Focal neural deficit | 3025 (9%) | 545 (18%) | 1212 (40%) | 1268 (42%) |
| Chest CT | ||||
| Malignancy | 13,521(31%) | 5703 (42%) | 6156 (46%) | 1662 (12%) |
| Dyspnea-hypoxia | 4487 (10%) | 699 (16%) | 1815 (40%) | 1973 (44%) |
| Lung nodules | 3502 (8%) | 1256 (36%) | 1607 (46%) | 639 (18%) |
| Abdomen CT | ||||
| Abdominal pain | 11,119 (26%) | 2378 (21%) | 4115 (37%) | 4626 (42%) |
| Malignancy | 10,749 (25%) | 4265 (40%) | 4547 (42%) | 1937 (18%) |
| Kidney stone | 1408 (3%) | 308 (22%) | 697 (49%) | 403 (29%) |
| Abdomen MR | ||||
| Malignancy | 2061 (21%) | 647 (31%) | 1005 (49%) | 409 (20%) |
| Mass | 791 (8%) | 269 (34%) | 351 (44%) | 171 (22%) |
| Pain | 406 (4%) | 133 (33%) | 183 (45%) | 91 (22%) |
CVA cerebrovascular accident