1948-1949 / 3107
•
A measure of the radiation output
∙ mA-minutes for X Ray units
∙ Gy for treatment units
•
Should consider ALL uses (
e.g.
include QA measurements)
Example for workload on linac
Workload
Hp D = 2.5Gy at isocentre, 50 patients treated per day on 250 working days/y
W = 50 x 250 x 2.5 = 31250 Gy/year
allow for other uses such as physics, blood irradiation, …
Total : 40000Gy per year at isocentre