2017_IGRT course book
Conclusions
• There are many error sources in radiotherapy, determine what they are in your department
• Focus on correcting remaining systematic errors • Do not forget the doctor’s error – delineation, and CTV
• IGRT does not eliminate all errors; carefully consider the margins to be used
• IGRT introduces some new errors and makes old errors more important (where is the CTV?)
• Margin recipes assume that you know ALL ERRORS … USE AT YOUR OWN RISK
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