Physics Bucharest 2017

Paris system calculation (cont.)

3.

Calculate the doserate at each Basal Point

4.

Calculate the mean of the individual Basal Point Doserates (known as the Basal Doserate)

5. Calculate 85% of the Basal Doserate (known as the Reference Doserate). This isodose was chosen for clinical reasons – best compromise between good coverage and keeping hotspots small

6.

Calculate the treatment time based on the Reference

Doserate and the dose required