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Regular quality assurance performed by hospital physicists and vendor preventive maintenance service and vendor repair time during the study period
| Different service | Average maintenance time per machine for the study period | Total | Average per year | |||
|---|---|---|---|---|---|---|
| 2013 | 2014 | 2015 | 2016 | |||
| Regular QA (h) | 19 | 25 | 41 | 48 | 133 | 33.25 |
| Vendor PM services (h) | 10 | 10 | 10 | 10 | 40 | 10 |
| Repair time (h) | 64 | 49 | 21 | 14 | 148 | 37 |
QA: Quality assurance, PM: Preventive maintenance
