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Take home messages
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Median dose closest to ‘old’ ICRU isocentre prescription point
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Use GTV/CTV/PTV volumes carefully
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Contour OARs carefully, with protocol & add PRV if appropriate
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Define
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Planning objectives and constraints - carefully & interactively
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Prioritisation
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Overlaps can occur between PTV and OAR (or PRV)
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Do not edit
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Construct additional exclusion volumes
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Use IMRT