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- W2682895551 abstract "Fricke gel dosimeters produced with a matrix of Poly-vinyl alcohol (PVA) cross-linked with glutaraldehyde (GTA) were analyzed with magnetic resonance imaging (MRI). Previous studies based on spectrophotometry showed valuable dosimetric features of these gels in terms of X-ray sensitivity and diffusion of the ferric ions produced after irradiation. In this study, MRI was performed on the gels at 1.5 T with a clinical scanner in order to optimize the acquisition parameters and obtain high contrast between irradiated and non-irradiated samples. The PVA gels were found to offer good linearity in the range of 0–10 Gy and a stable signal for several hours after irradiation. The sensitivity was about 40% higher compared to gels produced with agarose as gelling agent. The effect of xylenol orange (XO) on the MRI signal was also investigated: gel dosimeters made without XO show higher sensitivity to x-rays than those made with XO. The dosimetric accuracy of the 3D gels was investigated by comparing their MRI response to percentage depth dose and transversal dose profile measurements made with an ionization chamber in a water phantom. The comparison of PVA-GTA gels with and without XO showed that the chelating agent reduces the MRI sensitivity of the gels. Depth-dose and transversal dose profiles acquired by PVA-GTA gels without XO are more accurate and consistent with the ionization chamber data. However, diffusion effects hinder accurate measurements in the steep dose gradient regions and they should be further reduced by modifying the gel matrix and/or by minimizing the delay between irradiation and imaging." @default.
- W2682895551 created "2017-06-30" @default.
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- W2682895551 date "2018-01-01" @default.
- W2682895551 modified "2023-10-15" @default.
- W2682895551 title "Analysis of the response of PVA-GTA Fricke-gel dosimeters with clinical magnetic resonance imaging" @default.
- W2682895551 cites W1966827246 @default.
- W2682895551 cites W1967606674 @default.
- W2682895551 cites W1970401890 @default.
- W2682895551 cites W1971802072 @default.
- W2682895551 cites W1973893910 @default.
- W2682895551 cites W1977371856 @default.
- W2682895551 cites W1979323872 @default.
- W2682895551 cites W1981587803 @default.
- W2682895551 cites W1983338059 @default.
- W2682895551 cites W1986449332 @default.
- W2682895551 cites W1987678971 @default.
- W2682895551 cites W1988717257 @default.
- W2682895551 cites W1998124429 @default.
- W2682895551 cites W2002064890 @default.
- W2682895551 cites W2003188426 @default.
- W2682895551 cites W2005617969 @default.
- W2682895551 cites W2007852687 @default.
- W2682895551 cites W2009127646 @default.
- W2682895551 cites W2010148362 @default.
- W2682895551 cites W2010789472 @default.
- W2682895551 cites W2012575793 @default.
- W2682895551 cites W2016232870 @default.
- W2682895551 cites W2018472023 @default.
- W2682895551 cites W2020667767 @default.
- W2682895551 cites W2025546135 @default.
- W2682895551 cites W2027983397 @default.
- W2682895551 cites W2029739627 @default.
- W2682895551 cites W2033248540 @default.
- W2682895551 cites W2034215726 @default.
- W2682895551 cites W2034310565 @default.
- W2682895551 cites W2037416114 @default.
- W2682895551 cites W2037995107 @default.
- W2682895551 cites W2039163632 @default.
- W2682895551 cites W2040356787 @default.
- W2682895551 cites W2055365800 @default.
- W2682895551 cites W2062534273 @default.
- W2682895551 cites W2066814388 @default.
- W2682895551 cites W2068072656 @default.
- W2682895551 cites W2073367704 @default.
- W2682895551 cites W2074012390 @default.
- W2682895551 cites W2074228264 @default.
- W2682895551 cites W2077665084 @default.
- W2682895551 cites W2081292091 @default.
- W2682895551 cites W2083474469 @default.
- W2682895551 cites W2083803070 @default.
- W2682895551 cites W2085973119 @default.
- W2682895551 cites W2088555881 @default.
- W2682895551 cites W2089608207 @default.
- W2682895551 cites W2091311459 @default.
- W2682895551 cites W2092063568 @default.
- W2682895551 cites W2095434264 @default.
- W2682895551 cites W2099671210 @default.
- W2682895551 cites W2102805996 @default.
- W2682895551 cites W2116884042 @default.
- W2682895551 cites W2162066812 @default.
- W2682895551 cites W2163356752 @default.
- W2682895551 cites W2170877578 @default.
- W2682895551 cites W2194191825 @default.
- W2682895551 cites W2463564139 @default.
- W2682895551 cites W2470444924 @default.
- W2682895551 cites W2560726645 @default.
- W2682895551 cites W2568853977 @default.
- W2682895551 cites W2579265776 @default.
- W2682895551 cites W2590426279 @default.
- W2682895551 cites W2591265432 @default.
- W2682895551 cites W2594064127 @default.
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- W2682895551 cites W2603021407 @default.
- W2682895551 cites W2624750830 @default.
- W2682895551 cites W431629923 @default.
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- W2682895551 doi "https://doi.org/10.1016/j.nimb.2017.06.012" @default.
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