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Summary/Conclusion
Functional Image based RT target volume delineation
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Improves accuracy of contouring
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Gives robust volumes
PET-based contouring
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Different automatic contouring methods available
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Large differences in complexity but also in accuracy and
robustness
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Validation is crucial
Multi-modality imaging for contouring
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May again improve target volume delineation
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Validation is difficult
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Potential for functional imaging based therapy adaptation
Image-based delineation of radioresistant tumor sub-
volumes
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Eg. Hypoxia PET, Diffusion MRI, …