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Q2:
Being D
w
the dose absorbed at a point in water and D
det
the averaged absorbed dose in the detector placed at
that point . What of the following equalities is true?
1. D
det
(P) = D
w
(P)
2. D
det
(P) x f (Q) = D
w
(P)
3. D
det
(P) x CF = D
w
(P)
4. D
det
(P) = D
w
(P’)
Where f(Q) is the cavity factor and depends on the quality of the beam
Where CF is a calibration coefficient that is independent of the beam
quality