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Radiation Oncology

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Open Access 01-12-2014 | Research

Breast conserving treatment for breast cancer: dosimetric comparison of different non-invasive techniques for additional boost delivery

Authors: Hilde Van Parijs, Truus Reynders, Karina Heuninckx, Dirk Verellen, Guy Storme, Mark De Ridder

Published in: Radiation Oncology | Issue 1/2014

Abstract

Background

Today it is unclear which technique for delivery of an additional boost after whole breast radiotherapy for breast conserved patients should be state of the art. We present a dosimetric comparison of different non-invasive treatment techniques for additional boost delivery.

Methods

For 10 different tumor bed localizations, 7 different non-invasive treatment plans were made. Dosimetric comparison of PTV-coverage and dose to organs at risk was performed.

Results

The Vero system achieved an excellent PTV-coverage and at the same time could minimize the dose to the organs at risk with an average near-maximum-dose (D2) to the heart of 0.9 Gy and the average volume of ipsilateral lung receiving 5 Gy (V5) of 1.5%. The TomoTherapy modalities delivered an average D2 to the heart of 0.9 Gy for the rotational and of 2.3 Gy for the static modality and an average V5 to the ipsilateral lung of 7.3% and 2.9% respectively. A rotational technique offers an adequate conformity at the cost of more low dose spread and a larger build-up area. In most cases a 2-field technique showed acceptable PTV-coverage, but a bad conformity. Electrons often delivered a worse PTV-coverage than photons, with the planning requirements achieved only in 2 patients and with an average D2 to the heart of 2.8 Gy and an average V5 to the ipsilateral lung of 5.8%.

Conclusions

We present advices which can be used as guidelines for the selection of the best individualized treatment.

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Title: Breast conserving treatment for breast cancer: dosimetric comparison of different non-invasive techniques for additional boost delivery
Authors: Hilde Van Parijs
Truus Reynders
Karina Heuninckx
Dirk Verellen
Guy Storme
Mark De Ridder
Publication date: 01-12-2014
Publisher: BioMed Central
Published in: Radiation Oncology / Issue 1/2014
Electronic ISSN: 1748-717X
DOI: https://doi.org/10.1186/1748-717X-9-36

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Breast conserving treatment for breast cancer: dosimetric comparison of different non-invasive techniques for additional boost delivery

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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