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Theoretical concept of the Clinical Target Volume for the boost
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CTV for the boost:
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The rim of breast tissue – that has been localized < 1.5 - 2 cm
around the primary tumor.
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Margin of 1.5 - 2 cm is debatable – e.g.< 3.0 cm in case of PBI
(Kirby et al, R&O 2010).
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Delineation is dependent on the post-op situation; 3 post-operative
situations can be recognized:
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Clear seroma cavity present
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No seroma cavity present
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Partial seroma cavity present