| 82 | 84 | Diaza has written an RCF protocol explaining key issues, including film orientation and placement, scanner warm-up and the Callier effect. For the last one, we require a glass sheet to cover the film when being scanned. Further reading was undertaken on the RCF calibration, and a technical document will be added to the wiki to describe the best practice. One key insight is that using the Polynomial Model but fixing c provides a much lower error when calculating the dose at little cost to the accuracy of the measurement. The error reduced from between 5 and 16% to 3-4.5% in a range of 0-18Gy. It was also suggested that a calibration could be undertaken using all three channels, as this reduces the error further. |
