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Hashim AK, Hatif AR, Ahmed NM, Wadi IA, Al Qaaod AA. Comparison study of CR-39 and CN-85 detectors to evaluate the alpha radioactivity of some samples of drinks in Iraq. Appl Radiat Isot 2020; 167:109410. [PMID: 33065401 DOI: 10.1016/j.apradiso.2020.109410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/26/2020] [Accepted: 09/04/2020] [Indexed: 10/23/2022]
Abstract
Radon and progeny concentration measurements in various drink samples are intrinsically important for assessing the health risks resulting from daily consumption of these drinks. In this study the comparison between two Solid State Nuclear Track Detectors (SSNTDs), the CR-39 and the CN-85 has been conducted for the purpose of evaluating the radon concentration, annual effective dose, the rate of exhalation of radon and the effective radium content in thirty-two different samples of soft drink, water, and milk available in the local Iraq markets. The results showed that there are significant differences in the measurement results for the two detectors. The annual effective dose of the investigated samples is still below the limit of International Commission on Radiological Protection (ICRP) recommendation in the measurements of both detectors.
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Affiliation(s)
| | - Abbas R Hatif
- Department of Physics, Collage of Science, Kerbala University, Karbala, Iraq
| | | | - I A Wadi
- Prince Sattam Bin Abdulaziz University, Preparatory Year Deanship, Basic Science Unit, Alkharj, Saudi Arabia; University of Nyala, Faculty of Education, Physics Department, Nyala, Sudan.
| | - Amer A Al Qaaod
- International Centre for Theoretical Physics (ICTP), Trieste, Italy
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Dokic I, Mairani A, Niklas M, Zimmermann F, Chaudhri N, Krunic D, Tessonnier T, Ferrari A, Parodi K, Jäkel O, Debus J, Haberer T, Abdollahi A. Next generation multi-scale biophysical characterization of high precision cancer particle radiotherapy using clinical proton, helium-, carbon- and oxygen ion beams. Oncotarget 2018; 7:56676-56689. [PMID: 27494855 PMCID: PMC5302944 DOI: 10.18632/oncotarget.10996] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 07/19/2016] [Indexed: 12/22/2022] Open
Abstract
The growing number of particle therapy facilities worldwide landmarks a novel era of precision oncology. Implementation of robust biophysical readouts is urgently needed to assess the efficacy of different radiation qualities. This is the first report on biophysical evaluation of Monte Carlo simulated predictive models of prescribed dose for four particle qualities i.e., proton, helium-, carbon- or oxygen ions using raster-scanning technology and clinical therapy settings at HIT. A high level of agreement was found between the in silico simulations, the physical dosimetry and the clonogenic tumor cell survival. The cell fluorescence ion track hybrid detector (Cell-Fit-HD) technology was employed to detect particle traverse per cell nucleus. Across a panel of radiobiological surrogates studied such as late ROS accumulation and apoptosis (caspase 3/7 activation), the relative biological effectiveness (RBE) chiefly correlated with the radiation species-specific spatio-temporal pattern of DNA double strand break (DSB) formation and repair kinetic. The size and the number of residual nuclear γ-H2AX foci increased as a function of linear energy transfer (LET) and RBE, reminiscent of enhanced DNA-damage complexity and accumulation of non-repairable DSB. These data confirm the high relevance of complex DSB formation as a central determinant of cell fate and reliable biological surrogates for cell survival/ RBE. The multi-scale simulation, physical and radiobiological characterization of novel clinical quality beams presented here constitutes a first step towards development of high precision biologically individualized radiotherapy.
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Affiliation(s)
- Ivana Dokic
- German Cancer Consortium (DKTK), Translational Radiation Oncology, National Center for Tumor Diseases (NCT), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute of Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany.,Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Andrea Mairani
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,National Center for Oncological Hadrontherapy (CNAO), Pavia, Italy
| | - Martin Niklas
- German Cancer Consortium (DKTK), Translational Radiation Oncology, National Center for Tumor Diseases (NCT), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute of Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany.,Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Ferdinand Zimmermann
- German Cancer Consortium (DKTK), Translational Radiation Oncology, National Center for Tumor Diseases (NCT), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute of Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany.,Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Naved Chaudhri
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany
| | - Damir Krunic
- Light Microscopy Facility, German Cancer Research Center, Heidelberg, Germany
| | - Thomas Tessonnier
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany.,Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Alfredo Ferrari
- European Organization for Nuclear Research CERN, Geneva, Switzerland
| | - Katia Parodi
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Oliver Jäkel
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Division of Medical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Jürgen Debus
- German Cancer Consortium (DKTK), Translational Radiation Oncology, National Center for Tumor Diseases (NCT), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute of Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany.,Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Haberer
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany
| | - Amir Abdollahi
- German Cancer Consortium (DKTK), Translational Radiation Oncology, National Center for Tumor Diseases (NCT), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute of Radiation Oncology (HIRO), National Center for Radiation Research in Oncology (NCRO), Heidelberg, Germany.,Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany.,Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
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Gaillard S, Armbruster V, Hill MA, Gharbi T, Fromm M. Production and validation of CR-39-based dishes for alpha-particle radiobiological experiments. Radiat Res 2005; 163:343-50. [PMID: 15733042 DOI: 10.1667/rr3307] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The study of radiobiological effects induced in vitro by low fluences of alpha particles would be significantly enhanced if the precise localization of each particle track in the cell monolayer was known. From this perspective, we developed a new method based on tailor-made UV-radiation-cured CR-39, the production of which is described. Its validation both as a petri dish and as solid-state nuclear track detectors is demonstrated. With respect to the demands on solid-state nuclear track detectors in such experiments, these biologically compatible detectors have a controlled micrometric thickness that allows them to be crossed by the alpha particles. In this study, we present a method for obtaining 10-mum-thick CR-39, its chemical characterization, and its properties as a solid-state nuclear track detector under the environmental conditions of radiobiological experiments. The experimental studies performed with 3.5 MeV alpha particles show that their transmitted energy is sufficient enough to cross the entire cellular volume. Under optimal conditions, etched tracks are clearly defined 2 h after etching. Moreover, the UV-radiation-cured CR-39 represents an essentially zero background that is due to the short time between the production and use of the polymer. Under a confocal microscope, this thin solid-state nuclear track detector allows the precise localization of the impact parameter at the subcellular level.
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Affiliation(s)
- Sylvain Gaillard
- Laboratoire de Microanalyses Nucléaires, UFR Sciences et Techniques, Université de Franche-Comté, 25030 Besançon Cedex, France.
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Scampoli P, Durante M, Grossi G, Manti L, Pugliese M, Gialanella G. Fragmentation studies of relativistic iron ions using plastic nuclear track detectors. ADVANCES IN SPACE RESEARCH : THE OFFICIAL JOURNAL OF THE COMMITTEE ON SPACE RESEARCH (COSPAR) 2005; 35:230-5. [PMID: 15934199 DOI: 10.1016/j.asr.2005.01.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We measured fluence and fragmentation of high-energy (1 or 5 A GeV) 56Fe ions accelerated at the Alternating Gradient Synchrotron or at the NASA Space Radiation Laboratory (Brookhaven National Laboratory, NY, USA) using solid-state CR-39 nuclear track detectors. Different targets (polyethylene, PMMA, C, Al, Pb) were used to produce a large spectrum of charged fragments. CR-39 plastics were exposed both in front and behind the shielding block (thickness ranging from 5 to 30 g/cm2) at a normal incidence and low fluence. The radiation dose deposited by surviving Fe ions and charged fragments was measured behind the shield using an ionization chamber. The distribution of the measured track size was exploited to distinguish the primary 56Fe ions tracks from the lighter fragments. Measurements of projectile's fluence in front of the shield were used to determine the dose per incident particle behind the block. Simultaneous measurements of primary 56Fe ion tracks in front and behind the shield were used to evaluate the fraction of surviving iron projectiles and the total charge-changing fragmentation cross-section. These physical measurements will be used to characterize the beam used in parallel biological experiments.
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Affiliation(s)
- P Scampoli
- Department of Physics, University Federico II, and INFN, Sezione di Napoli, Monte S. Angelo, Via Cintia, Napoli, Italy
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Ottolenghi A, Monforti F, Merzagora M. A Monte Carlo calculation of cell inactivation by light ions. Int J Radiat Biol 1997; 72:505-13. [PMID: 9374430 DOI: 10.1080/095530097143004] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study simulates the exposure of V79 Chinese hamster fibroblasts to low-energy protons, deuterons and alpha-particles in the LET range 10-200 keV/microm. The starting assumption is that the induction of clustered lesions in DNA is a fundamental step for cell inactivation. A non-homogeneous cell population was simulated by a computer program, using as input measured morphological parameters reported in the literature. Variations in the number of traversals through each cell of the population and in the length of the traversal, depending on actual nuclear thickness and position of the traversal, the energy spread of the incident beam, and the change of LET along the tracks were included in the simulation. Microdosimetric spectra were computed and compared with spectra obtained neglecting particle slowing-down and stochastic aspects of cell morphology. Simulated cell survival was estimated under the assumption that surviving cells are those with no clustered DNA lesions or no passages. The main features of experimental RBE versus LET and particle type were reproduced by the simulations. The influence of stochastic aspects of target-cell morphology and of the energy of the incident particles on survival were investigated under different assumptions about the correlation between morphological parameters. Results support the hypothesis of a relevant role of clustered DNA damage in cell killing and point out the importance of target-cell morphology and its variability in beam dosimetry and computer simulations of low-energy particle radiation effects.
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Affiliation(s)
- A Ottolenghi
- Dipartimento di Fisica, Università di Milano, and INFN, Italy
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