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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2007
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=46437712 |
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| _version_ | 1866812457180200960 |
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| author | Lucas N. de Oliveira |
| author_facet | Lucas N. de Oliveira |
| contents | Ferrous Xylenol Gel Measurements for 6 and 10 MV Photons in Small Field Sizes Lucas N. de Oliveira Carmen S. Guzmán Calcina Marco A. Parada Carlos E. de Almeida Adelaide de Almeida Física, Astronomía y Matemáticas Linear accelerator Physical parameters Fricke Xylenol Gel dosimeter The Fricke dosimeter is a ferrous sulfate aqueous solution that, when irradiated, oxidizes the Fe2+ ions toFe3+. This new concentration, generally determined through spectrophotometry, is directly proportional tothe ionizing radiation absorbed energy. The Fricke Xylenol Gel dosimeter (FXG) was developed through theincorporation of swine skin gelatin and xylenol orange. These modifications provided better signal stabilityand sensitivity for lower absorbed dose measurements, such as those used in radiotherapy. In this work FXGsamples were irradiated with absorbed doses of 2 Gy, from 6 MV and 10 MV photons, using small field sizesgeometry for dosimetric parameters determination. All the FXG dosimeter readings were accomplished withour specially developed spectrophotometer, using a narrow light beam at the wavelength of 585 nm, wherethe highest absorbance sensitivity occurs. From our results, we can confirm not only that the FXG dosimetricsystem (FXG plus a high lateral spatial resolution spectrophotometer) can be used for general dosimetry, but aswell for small field size dosimetry of interest in radiosurgery. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437712 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.37 |
| format | Artículo científico |
| id | redalyc_46437712 |
| language | en |
| publishDate | 2007 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Ferrous Xylenol Gel Measurements for 6 and 10 MV Photons in Small Field Sizes Lucas N. de Oliveira Física, Astronomía y Matemáticas Linear accelerator Physical parameters Fricke Xylenol Gel dosimeter Ferrous Xylenol Gel Measurements for 6 and 10 MV Photons in Small Field Sizes Lucas N. de Oliveira Carmen S. Guzmán Calcina Marco A. Parada Carlos E. de Almeida Adelaide de Almeida Física, Astronomía y Matemáticas Linear accelerator Physical parameters Fricke Xylenol Gel dosimeter The Fricke dosimeter is a ferrous sulfate aqueous solution that, when irradiated, oxidizes the Fe2+ ions toFe3+. This new concentration, generally determined through spectrophotometry, is directly proportional tothe ionizing radiation absorbed energy. The Fricke Xylenol Gel dosimeter (FXG) was developed through theincorporation of swine skin gelatin and xylenol orange. These modifications provided better signal stabilityand sensitivity for lower absorbed dose measurements, such as those used in radiotherapy. In this work FXGsamples were irradiated with absorbed doses of 2 Gy, from 6 MV and 10 MV photons, using small field sizesgeometry for dosimetric parameters determination. All the FXG dosimeter readings were accomplished withour specially developed spectrophotometer, using a narrow light beam at the wavelength of 585 nm, wherethe highest absorbance sensitivity occurs. From our results, we can confirm not only that the FXG dosimetricsystem (FXG plus a high lateral spatial resolution spectrophotometer) can be used for general dosimetry, but aswell for small field size dosimetry of interest in radiosurgery. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437712 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.37 |
| title | Ferrous Xylenol Gel Measurements for 6 and 10 MV Photons in Small Field Sizes |
| topic | Física, Astronomía y Matemáticas Linear accelerator Physical parameters Fricke Xylenol Gel dosimeter |
| url | https://www.redalyc.org/articulo.oa?id=46437712 |