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3D detectors: why are they needed?
Measurement-based plan validation for IMRT:
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Demonstrate that an IMRT plan can be delivered. Leaf sequences as
calculated by the TPS may not take into account the limitations of the real
device and the equipment may not perform as expected.
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Fluence modulation produces regions with high dose. These hot spots
depend critically on accuracy of the delivery and treatment field set-up
The measurement system should:
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Cover the entire irradiated volume
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High resolution
•
On line measurement
3D detector
GEL DOSIMETRY