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Accuracy frameless system: Methods
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Frameless versus frame-based system?
g
Phantom study
g
Hidden target test: “end to end” test
Ø
Overall treatment accuracy
Ø
Phantom from CT – Treatment Planning – Irradiation
Ø
Target: BB
Ø
10 mm circular treatment beam @ 0 and 270° gantry
Ø
Center of projected image of BB with respect of treatment
field
34