[Establishing margins from CTV to PTV in breast cancer treatment].
The benefit of postoperative radiotherapy for breast cancer both in terms of local control and overall survival is widely acknowledged. Today, technological advances in simulation imaging and positioning control enable the definition of new margins from CTV to PTV. Improvements in mathematical modeling of random and systematic errors impact the treatment plans. However, there is no universal absolute value to consistently determine the margins from CTV to PTV. It is down to each centre to assess and correct as much as possible uncertainties due to positioning and internal movements depending on techniques and methods used for the implementation of treatment and monitoring. IMRT and respiratory gating techniques for breast radiotherapy will be considered more systematically in the years to come.
Service de radiothérapie, CHRU Morvan, 2, avenue Foch, 29200 Brest, France. Electronic address: alice.cabanne@gmail.com.
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Cabanne
Service de radiothérapie, CHRU Morvan, 2, avenue Foch, 29200 Brest, France.
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Schick
Service de radiothérapie, CHRU Morvan, 2, avenue Foch, 29200 Brest, France.
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Pradier
Service A de radiothérapie, institut Gustave-Roussy, 114, rue Édouard-Vaillant, 94805 Villejuif cedex, France.
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Rivera
D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D019583:Dose Fractionation, Radiation; D005260:Female; D006801:Humans; D056888:Patient Positioning; D015641:Radiography, Interventional; D018714:Radiotherapy, Adjuvant; D020266:Radiotherapy, Conformal; D061089:Radiotherapy, Image-Guided; D012119:Respiration
Adaptative radiotherapy; Breast cancer; Cancer du sein; IGRT; IMRT; RCMI; Radiotherapy conformal; Radiothérapie adaptative; Radiothérapie conformationnelle; Radiothérapie guidée par l’image