1998–2008 utilization rates and utilization rate CAGRs for head and spine CT and MR
| 1998 Utilization Rate | 2008 Utilization Rate | 1998–2005 CAGR | 2005–2008 CAGR | 1998–2008 CAGR | |
|---|---|---|---|---|---|
| Head CT | 7.2 | 16.3 | 10.4% | 4.4% | 8.5% |
| Spine CT | 1.7 | 3.6 | 8.8% | 5.0% | 7.7% |
| Head MR | 9.4 | 19.9 | 11.9% | (−1.2%) | 7.8% |
| Spine MR | 10.5 | 30.3 | 15.3% | 2.0% | 11.1% |
| Total | 28.9 | 70.1 | 12.7% | 1.7% | 9.3% |