478-479 / 3107
69
è
Conventional RT
: 10
1
parameters/plan
è
IMRT
:
10
3
parameters/plan
è
TomoTherapy
:
10
4
parameters/plan
Complex treatments and the need for patient specific QA
Impossible to verify all
combinations with machine
oriented QA experiments
In IMRT/VMAT/Tomotherapy the classic entrance dose in vivo, which was a proved
technique to detect large errors, became difficult,
and yet it are these complex
techniques which really require patient specific QA
Even advanced TPS contains
only limited model
of the beam and machine …”
Is it possible to cover all operation parameter combinations
in machine related QA for
advanced IMRT delivery techniques? Maybe we should
focus on the end result
the
delivered dose to the patient and
relate any dosimetric discrepancies between intended and
delivered dose to the impact on treatment effectiveness
?!
Prove the plan works with an experimental verification
1) Dose, MU calc
2) Information transfer TPS->R&V
3) Dose delivery