Molecular structure effects on the post irradiation diffusion in polymer gel dosimeters.
作者： Facundo Mattea , Marcelo R. Romero , José Vedelago , Andrés Quiroga , Mauro Valente
DOI: 10.1016/J.APRADISO.2015.03.007
关键词:
摘要: Abstract Polymer gel dosimeters have specific advantages for recording 3D radiation dose distribution in diagnostic and therapeutic medical applications. But, even systems where the structure is usually maintained long periods of time after irradiation, it still not possible to eliminate diffusion different species regions gradients within gel. As a consequence, information loses quality over time. In pursuit solution improve understanding this phenomenon novel system based on itaconic acid N-N′-methylene-bisacrylamide (BIS) hereby proposed. Effects changes chemical monomers dosimetric sensitivity post-irradiation was studied. study, one carboxylic groups molecule modified with aniline obtain molecules similar reactivity but molecular sizes. Then, these original ITA were irradiated an X-ray tomography apparatus at doses up 173 Gy. Afterwards, resulting characterized by Raman spectroscopy optical absorbance order study their feasibility capabilities as systems, optical-CT analyze post irradiation diffusion.
elsevier.com
sci-hub.se 参考文章(14)
Y De Deene, P Hanselaer, C De Wagter, E Achten, W De Neve, An investigation of the chemical stability of a monomer/polymer gel dosimeter Physics in Medicine and Biology. ,vol. 45, pp. 859- 878 ,(2000) , 10.1088/0031-9155/45/4/304
Tuncer Çaykara, İlkay Akçakaya, Swelling behaviors of ionic poly(N,N-dimethylacrylamide-co-acrylamide) hydrogels in various media Journal of Applied Polymer Science. ,vol. 104, pp. 2140- 2145 ,(2007) , 10.1002/APP.24313
YR Huang, LL Hsieh, YJ Chang, TH Wang, BT Hsieh, None, Characterization of the chemical stability of irradiated N-isopropylacrylamide gel dosimeter Radiation Physics and Chemistry. ,vol. 89, pp. 76- 82 ,(2013) , 10.1016/J.RADPHYSCHEM.2013.03.047
Marek J. Maryanski, John C. Gore, Richard P. Kennan, Robert J. Schulz, NMR relaxation enhancement in gels polymerized and cross-linked by ionizing radiation: a new approach to 3D dosimetry by MRI. Magnetic Resonance Imaging. ,vol. 11, pp. 253- 258 ,(1993) , 10.1016/0730-725X(93)90030-H
C. Baldock, P. J. Harris, A. R. Piercy, B. Healy, Experimental determination of the diffusion coefficient in two-dimensions in ferrous sulphate gels using the finite element method. Australasian Physical & Engineering Sciences in Medicine. ,vol. 24, pp. 19- 30 ,(2001) , 10.1007/BF03178282
Y.J. Tseng, W.C. Chu, W.Y. Chung, W.Y. Guo, Y.-H. Kao, J. Wang, Sung-Cheng Huang, The role of dose distribution gradient in the observed ferric ion diffusion time scale in MRI-Fricke-infused gel dosimetry Magnetic Resonance Imaging. ,vol. 20, pp. 495- 502 ,(2002) , 10.1016/S0730-725X(02)00522-2
Laurent Masaro, Peppas NA, XX Zhu, Physical models of diffusion for polymer solutions, gels and solids Progress in Polymer Science. ,vol. 24, pp. 731- 775 ,(1999) , 10.1016/S0079-6700(99)00016-7
Irene Mijangos, António Guerreiro, Elena Piletska, Michael J. Whitcombe, Kal Karim, Iva Chianella, Sergey Piletsky, Macroradical initiated polymerisation of acrylic and methacrylic monomers Journal of Separation Science. ,vol. 32, pp. 3340- 3346 ,(2009) , 10.1002/JSSC.200900216
Simon J. Doran, The history and principles of chemical dosimetry for 3-D radiation fields: gels, polymers and plastics. Applied Radiation and Isotopes. ,vol. 67, pp. 393- 398 ,(2009) , 10.1016/J.APRADISO.2008.06.026
C Baldock, Y De Deene, S Doran, G Ibbott, A Jirasek, M Lepage, K B McAuley, M Oldham, L J Schreiner, Polymer gel dosimetry Physics in Medicine and Biology. ,vol. 55, ,(2010) , 10.1088/0031-9155/55/5/R01