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A dosimetric comparison to find the most optimum technique of radiotherapy in breast conservation

In Radiotherapy and Oncology
By: Patkar S.
Contributor(s): Munshi A | .
Material type: materialTypeLabelArticleSeries: Vol 99 Issues Suppl 1.Publisher: 2011Description: S424.Subject(s): Breast conservation | Radiotherapy | Technique | Dosimetry | DDC classification: In: Radiotherapy and OncologySummary: Purpose: In recognition of the technical limitations of traditional radiotherapy (RT) in providing a uniform and conformal dose, three-dimensional (3D) treatment planning and intensity modulated RT have been used for improvement in dosimetry and clinical outcomes. This study aims at improving target dose distribution and avoiding unnecessary normal tissue irradiation during whole breast RT delivery. Materials: 8 patients of Carcinoma breast with left sided lesions were taken for this study. CT-scans were obtained in the supine position on breast-board. Conventional simulation was used to generate tangential beam geometry. Treatment plans were make using four different techniques (1) 2 tangential beams with physical wedges (PW) (2) Enhance dynamic wedge (EDW) plan, (3) 3D intensity modulation using Electronic tissue compensator (ETC) and (4)volume based intensity modulation using 6 beams (IMRT). In IMRT, couch was rotated to 100 and 3500 to obtain 4 more complimentary tangential fields. The prescribed dose w
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Articles Articles Tata Memorial Hospital
(Browse shelf) Available AR11887

Purpose: In recognition of the technical limitations of traditional radiotherapy (RT) in providing a uniform and conformal dose, three-dimensional (3D) treatment planning and intensity modulated RT have been used for improvement in dosimetry and clinical outcomes. This study aims at improving target dose distribution and avoiding unnecessary normal tissue irradiation during whole breast RT delivery. Materials: 8 patients of Carcinoma breast with left sided lesions were taken for this study. CT-scans were obtained in the supine position on breast-board. Conventional simulation was used to generate tangential beam geometry. Treatment plans were make using four different techniques (1) 2 tangential beams with physical wedges (PW) (2) Enhance dynamic wedge (EDW) plan, (3) 3D intensity modulation using Electronic tissue compensator (ETC) and (4)volume based intensity modulation using 6 beams (IMRT). In IMRT, couch was rotated to 100 and 3500 to obtain 4 more complimentary tangential fields. The prescribed dose w

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