Question
What methods can be used to achieve a 100% PDD scale in relative dose measurements?
Answer
To achieve a PDD of 100% on the scale during relative dose measurement, please follow these steps:
Step 1
Normalization at Dmax is performed for the energy measurement.
For example, at 15 mm for 6 MV energy
Step 2
Then, perform the measurement again, and it will be at the 100% scale.
Step 3
If you have measured without normalization at Dmax, you can rescale to 100% for the corresponding Dmax energy.
Before normalization.
After rescaling:
Go to Data Handling > Rescale:
After rescaling, all PDD values are at 100%