Preliminary experience of a predictive model to define rectal volume and rectal dose during the treatment of prostate cancer.
Br J Radiol
; 84(1005): 819-25, 2011 Sep.
Article
em En
| MEDLINE
| ID: mdl-21849366
ABSTRACT
OBJECTIVES:
The aim of this study was to define a method to evaluate the total dose delivered to the rectum during the whole treatment course in six patients undergoing irradiation for prostate cancer using an offline definition of organ motion with images from a cone beam CT (CBCT) scanner available on a commercial linear accelerator.METHODS:
Patient set-up was verified using a volumetric three-dimensional CBCT scanner; 9-14 CBCT scans were obtained for each patient. Images were transferred to a commercial treatment planning system for offline organ motion analysis. The shape of the rectums were used to obtain a mean dose-volume histogram (RESULTS:
In all six patients the original rectal DVH for the planning CT scan showed higher values than all DVHs.CONCLUSION:
Although the application of the model to a larger set of patients is necessary to confirm this trend, reconstruction of a representative volume of the rectum throughout the entire treatment course seems feasible.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
/
Tipos_de_cancer
/
Colon_e_reto
/
Prostata
/
Tratamento
/
Radioterapia
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Próstata
/
Reto
/
Tomografia Computadorizada de Feixe Cônico
Tipo de estudo:
Guideline
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Br J Radiol
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Itália