ESR Evaluation of stable free radicals produced by ionizing radiation in multifunctional substances. Application for absorbed dose measurements in radiotherapy

Bartolotta, A.; Brai, M.; De Caro, V.; D’Oca, C.; Giannola, L.; Teri, G.
April 2000
AIP Conference Proceedings;2000, Vol. 513 Issue 1, p31
Academic Journal
Electron Spin Resonance dosimetry is a useful system for measuring absorbed dose in radiotherapy. This work describes the results obtained at the University of Palermo regarding an experimental study aimed to optimize the properties of alanine based dosimeters and to analyze other materials, that could be alternatives to alanine. © 2000 American Institute of Physics.


Related Articles

  • Application of Alanine Dosimeter as Calibration Dosimeter for Low dose. Pitchaya Ngampring; Sumalee Ninlaphruk; Ekachai Hoonnivathana; Piyapong Pankaew; Patcharin Naemchanthara; Pichet Limsuwan; Kittisakchai Naemchanthara // Journal of Applied Sciences Research;Special Issue2013, Vol. 9 Issue 12, p5990 

    The calibration of a radiation dosimeter is essential in detection of many Ionizing radiations such as X-rays, alpha rays, beta rays, and gamma rays. The main work is to apply irradiated alanine as a calibrator for electron spin resonance spectroscopy (ESR) readout. The irradiated alanine...

  • ESR study on rotational motions of some free radicals in the supercooled and glassy organic solvents. Ohta, Nobuaki; Kuwata, Keiji // Journal of Chemical Physics;4/1/1985, Vol. 82 Issue 7, p3420 

    Rotational motions of solute molecules in supercooled and glassy media were investigated with the temperature-dependent ESR spectra of the organic nitroxides and chlorine dioxide in some organic solvents. The rotational correlation times (τR’s) of the solutes were estimated by the...

  • Development of an L-band electron spin resonance/proton nuclear magnetic resonance imaging... Sato, Toshiyuki; Oikawa, Kazuo; Ohya-Nishiguchi, Hiroaki; Kamada, Hitoshi // Review of Scientific Instruments;May97, Vol. 68 Issue 5, p2076 

    Describes the development of an L-band electron spin resonance/proton nuclear magnetic resonance imaging instrument for measuring the two-dimensional distribution of both free radicals and protons in single sample. Design of the common resonator for the instrument; Resonance capability;...

  • Free Radicals in Living Systems: In Vivo Detection of Bioradicals with EPR Spectroscopy. Hirata, Hiroshi; Fujii, Hirotada // Current Organic Chemistry;Mar2006, Vol. 10 Issue 5, p521 

    This review article describes recently developed technologies in electron paramagnetic resonance (EPR) spectroscopy and imaging. Automatic control techniques used for a continuous-wave (CW) EPR spectrometer are discussed. These techniques can solve problems created by the motion of animals....

  • Electron spin resonance analysis of the oxidation reactions of nitrone type spin traps with gold(III) ion. Nakajima, Akira; Ueda, Yuto; Endoh, Nobuyuki; Tajima, Kunihiko; Makino, Keisuke // Canadian Journal of Chemistry;Aug2005, Vol. 83 Issue 8, p1178 

    When cyclic nitrones, such as 5,5-dimethyl-1-pyrroline-N-oxide (DMPO), 4-phenyl-5,5-dimethyl-1- pyrroline-N-oxide (PDMPO), and 3,3,5,5-tetramethyl-1-pyrroline-N-oxide (M4PO) were mixed with hydrogen tetrachloro aurate(III), DMPOX (5,5-dimethyl-1-pyrrolid-2-one-N-oxyl) type free radicals appeared...

  • Free-Radical Reaction Routes in γ-Irradiated β-D-Fructose. Abagyan, G. V.; Apresyan, A. S. // High Energy Chemistry;Nov/Dec2004, Vol. 38 Issue 6, p369 

    γ-Irradiated Β-D-fructose was studied over a wide temperature range (77-380 K) using EPR spectroscopy. A plausible scheme of the radiation-induced degradation of Β-D-fructose is proposed.

  • A new approach to the design of antioxidants derived from 3,5,7,3′,4′-pentahydroxyflavone. Nifant'ev, E.; Mishina, E.; Teleshev, A.; Sabirov, A.; Stankevich, I.; Solodovnikov, S. // Doklady Chemistry;Jul2012, Vol. 445 Issue 1, p140 

    The article presents a study on the pragmagnetic forms of 3,5,7,3',4'-pentahydroxyflavone quercetin (Qu) and its derivatives in treating free-radical reactivity alteration of flavonoids. It states that electron paramagnetic resonance (ESR) spectroscopy was used to study Qu and its derivatives....

  • The Reactivity of Free Radicals in Biomass Char Studied by EPR Spectroscopy. Xiuzhi Gao; Jiwen Feng // Mini-Reviews in Organic Chemistry;Nov2011, Vol. 8 Issue 4, p438 

    In this review, the features of electron paramagnetic resonance (EPR) spectra of biomass chars prepared from single biopolymers (cellulose, pectin, lignin, etc.) to complex plant materials (tobacco) are summarized, and the interaction of biomass chars with air, O2 and/or H2O as detected by EPR...

  • Estimation of the Postmortem Duration of Mouse Tissue by Electron Spin Resonance Spectroscopy. Ito, Shinobu; Mori, Tomohisa; Kanazawa, Hideko; Sawaguchi, Toshiko // Journal of Toxicology;2011, p1 

    Electron spin resonance (ESR) method is a simplemethod for detecting various free radicals simultaneously and directly. However, ESR spin trap method is unsuited to analyze weak ESR signals in organs because of water-induced dielectric loss (WIDL). To minimize WIDL occurring in biotissues and to...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics