Table 5.
Number of PET/MR Scanners Needed for Dementia Screening of 60–79 and 60 + starting in 2020
| Country | Incidence/y1 | Life Style Risk Factor2 | Number to be screened3 | Number of scanners needed4 |
| Canada | ||||
| 60–79 | 62,000 | 31,000 | 310,000 | 103 |
| 60+ | 131,000 | 65,500 | 655,000 | 218 |
| USA | ||||
| 60–79 | 510,000 | 255,000 | 2,550,000 | 850 |
| 60+ | 1,045,000 | 522,500 | 5,225,000 | 1,742 |
| China | ||||
| 60–79 | 1,709,000 | 854,500 | 8,545,000 | 2,848 |
| 60+ | 2,365,000 | 1,182,500 | 11,825,000 | 3,942 |
| Total Scanners for Canada, USA and China | 3,801–5,902 | |||
1Incidence for Canada taken from Manuel et al. 2016 [39] multiplied by 1.3 to correct for cases not diagnosed in the medical setting. 2Assume 50% of dementia is caused by Life Style Risk Factors [24, 44]. 3Assume prevalence in the population to be screened is 10% [50]. 4Assume one scanner can do 3,000 procedures per year. 5USA incidence taken from the Canadian incidence [39] normalized to the expected difference in population in 2020 (334 versus 37.6 million) and corrected by relative prevalence. 6China incidence was taken from Canadian incidence normalized to the expected population differences in 2020 (1,403 versus 37.6 million) and corrected by the estimated relative prevalence in 2020 [39].