Dosimetric evaluation of modern radiation therapy techniques for left breast in deep-inspiration breath-hold.

Détails

ID Serval
serval:BIB_ACD2D489BB28
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Dosimetric evaluation of modern radiation therapy techniques for left breast in deep-inspiration breath-hold.
Périodique
Physica medica
Auteur⸱e⸱s
Koivumäki T., Fogliata A., Zeverino M., Boman E., Sierpowska J., Moeckli R., Vallet V., Cozzi L., Heikkilä J., Väänänen A., Vuolukka K., Sillanmäki S., Seppälä J.
ISSN
1724-191X (Electronic)
ISSN-L
1120-1797
Statut éditorial
Publié
Date de publication
01/2018
Peer-reviewed
Oui
Volume
45
Pages
82-87
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
The dosimetric differences between four radiation therapy techniques for left sided whole breast irradiation were evaluated side by side in the same patient population.
Radiotherapy treatment plans were retrospectively created with Accuray TomoDirect (TD), Elekta Volumetric Modulated Arc Therapy (E-VMAT), Varian RapidArc (RA) and Field-in-field (FinF) technique for 20 patients, who had received left breast irradiation during deep-inspiration breath-hold. Dose characteristics of planning target volume and organs at risk were compared.
The E-VMAT, TD and RA treatment plans had higher target coverage (V95%) than FinF plans (97.7-98.3% vs. 96.6%). The low-dose spillage to contralateral breast and lung was smaller with FinF and TD (mean 0.1 and 0.3 Gy) compared to E-VMAT and RA (mean 0.6 and 0.9 Gy). E-VMAT, RA and TD techniques were more effective than FinF in sparing left anterior descending artery (mean 4.0, 4.2 and 4.7 Gy vs. 6.1 Gy, respectively).
In whole breast irradiation TD, E-VMAT and RA plans generated in this study achieved higher dose coverage and sparing of organs from the high dose in the vicinity of the PTV. The advantage of calculated FinF plans is the lowest dose on contralateral organs. The choice of the technique used should be weighted by each institution taking into account the dose characteristics of each technique and its fit with patient anatomy bearing in mind the increased workload of using modulated techniques and the increased beam on time.

Mots-clé
Biophysics, General Physics and Astronomy, Radiology Nuclear Medicine and imaging, General Medicine, Breast irradiation, Deep-inspiration breath-hold, Tomotherapy, Volumetric modulated arc therapy
Pubmed
Web of science
Création de la notice
05/02/2018 11:12
Dernière modification de la notice
04/05/2020 6:06
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