Dosimetric aspects of breast radiotherapy with three-dimensional and intensity-modulated radiotherapy helical tomotherapy planning modules.
Med Dosim
; 42(1): 42-46, 2017.
Article
em En
| MEDLINE
| ID: mdl-28129971
ABSTRACT
In this work, we investigated the dosimetric differences between the intensity-modulated radiotherapy (IMRT) plans and the three-dimensional (3D) helical plans based on the TomoTherapy system. A total of 15 patients with supine setup were randomly selected from the data base. For patients with lumpectomy planning target volume (PTV), regional lymph nodes were also included as part of the target. For dose sparing, the significant differences between the helical IMRT and helical 3D were only found in the heart and contralateral breast. For the dose to the heart, helical IMRT reduced the maximum point dose by 6.98Gy compared to the helical 3D plan (p = 0.01). For contralateral breast, the helical IMRT plans significantly reduced the maximum point dose by 5.6Gy compared to the helical 3D plan. However, compared to the helical 3D plan, the helical IMRT plan increased the volume for lower dose (13.08% increase in V5Gy, p = 0.01). In general, there are no significant differences in dose sparing between helical IMRT and helical 3D plans.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Planejamento da Radioterapia Assistida por Computador
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Neoplasias da Mama
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Carcinoma Ductal de Mama
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Radioterapia de Intensidade Modulada
Tipo de estudo:
Etiology_studies
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Observational_studies
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Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Middle aged
Idioma:
En
Revista:
Med Dosim
Assunto da revista:
RADIOTERAPIA
Ano de publicação:
2017
Tipo de documento:
Article