Investigation into the Effect of Breast Volume on Irradiation Dose Distribution in Asian Women with Breast Cancer.
breast cancer
breast volume
dose distribution
irradiation method
radiotherapy
Journal
Acta medica Okayama
ISSN: 0386-300X
Titre abrégé: Acta Med Okayama
Pays: Japan
ID NLM: 0417611
Informations de publication
Date de publication:
Jun 2021
Jun 2021
Historique:
entrez:
28
6
2021
pubmed:
29
6
2021
medline:
15
12
2021
Statut:
ppublish
Résumé
Reports on irradiation dose distribution in breast cancer radiotherapy with sufficient sample size are limited in Asian patients. Elucidating dose distribution in Asian patients is particularly important as their breast volume differs compared to patients in Europe and North America. Here, we examined dose distribution in the irradiation field relative to breast volume for three irradiation methods historically used in our facility. We investigated the influence of breast volume on each irradiation method for Asian women. A total of 573 women with early-stage breast cancer were treated with breast-conserving surgery and adjuvant radiotherapy. Three methods were compared: wedge (W), field-in-field (FIF), and wedge-field-in-field (W-FIF). In patients with small breast volume, FIF decreased low- and high-dose areas within the planning target volume, and increased optimal dose area more than W. In patients with medium and large breast volumes, FIF decreased high-dose area more than W. The absolute values of correlation coefficients of breast volume to low-, optimal-, and high-dose areas and mean dose were significantly lower in FIF than in W. The correlation coefficients of V107% were 0.00 and 0.28 for FIF and W, respectively. FIF is an excellent irradiation method that is less affected by breast volume than W in Asian breast cancer patients.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
307-314Déclaration de conflit d'intérêts
No potential conflict of interest relevant to this article was reported.
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