Appendix II – Linacs Age and Features
Linear accelerators across Australia in 2000 and 2010: age and features
| 2000 13 | 2010 14 | |
|---|---|---|
| Characteristics | Percentage | |
| By Year of Installation | ||
| >10 years | 14.0% | 9.0% |
| >5 to 10 years | 39.0% | 28.3% |
| 0 to 5 years | 40.0% | 60.7% |
| In the survey years | 7.0% | 2.1% |
| X-ray Energy | ||
| Dual | 88.3% | |
| Single | 11.7% | |
| MLC (Multileaf collimation) | ||
| Yes | 74.2% | 97.2% |
| No | 25.8% | 2.1% |
| No response | 0.7% | |
| EPI (Electronic Portal Imaging) | ||
| Yes | 79.6% | 92.4% |
| No | 20.4% | 5.5% |
| No response | 2.1% | |
| R&V (Record and Verify) | ||
| Yes | 91.4% | 94.5% |
| No | 8.6% | 2.8% |
| No response | 2.8% | |
| IMRT Capable (Intensity Modulated Radiation Therapy) | ||
| Yes | 84.8% | |
| No | 15.2% | |
| Cone Beam CT | ||
| Yes | 39.3% | |
| No | 58.6% | |
| No response | 2.1% | |
| Tertiary Imaging/online correction | ||
| Yes | 63.4% | |
| No | 29.0% | |
| No response | 7.6% | |
| VMAT Capable (Volumetric Modulation Arc Therapy) | ||
| Yes | 24.1% | |
| No | 73.8% | |
| No response | 2.1% | |