Studies on heavy charged particle interaction, water equivalence and Monte Carlo simulation in some gel dosimeters, water, human tissues and water phantoms

Kurudirek, Murat

doi:10.1016/j.nima.2015.06.001

Cited by 23 publications

(4 citation statements)

References 20 publications

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“…This matrix preserves the dose distribution, minimizing the diffusion of the monomers and gels. One requirement is that these materials have to be similar to human tissues [4], regarding the response to ionizing radiation. Gelatin is normally used because it is an inexpensive material available from natural sources; also the preparation of these materials is simple and requires only equipment which is commonly available in a chemical laboratory.…”

Section: Introductionmentioning

confidence: 99%

Analytical and rheological studies of modified gel dosimeters exposed to X-ray beams

Romero

Mattea

Vedelago

et al. 2016

Microchemical Journal

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The need to know the dose of X-rays to be applied to patients suffering diseases such as cancer requires accurate and stable dosimetric devices. Currently, the use of gelatin-based dosimeters has yielded excellent results but lack adequate thermal stability. In this paper a chemical modification of the gelatin (at concentrations typically used for the preparation of dosimeters) using glutaraldehyde as a cross-linking agent is proposed. Through rheological studies it was found that modified gelatin with glutaraldehyde concentrations between 0.15 and 0.50 % w / v show better thermal stability with an increase in elastic modulus of up to 100 times at 37°C and convenient reaction times for the preparation of the dosimeters. Subsequently, a mathematical model to easily predict the elastic modulus of materials prepared with different concentrations of gelatin and glutaraldehyde was proposed. The analytical response of modified and unmodified materials was evaluated and no significant alteration of the dosimetric sensitivity was found in the dosimeters (based on itaconic acid and N, N'-methylenebisacrylamide) when an X-ray irradiation dose from 0 to 300 Gy was applied. It was found that the best thermal A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT2 stability of dosimeters prepared with modified gelatin would decrease the loss of information between the irradiation process and the absorbance reading, thereby improving the stability and linear correlation of data.Overall, the results indicated that the dosimeters could be modified as proposed and achieve significant improvements regarding to their thermal stability, without changing significantly the usual preparation process.

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Section: Introductionmentioning

confidence: 99%

Analytical and rheological studies of modified gel dosimeters exposed to X-ray beams

Romero

Mattea

Vedelago

et al. 2016

Microchemical Journal

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“…Also, water and some human tissues such as adipose tissue, muscle skeletal (ICRP) and muscle striated (ICRU) were used for comparison. In the present work, a similar method described elsewhere was adopted for calculation of effective atomic numbers and electron densities for heavy ions (Kurudirek 2014b, Kurudirek and Onaran 2015, Kurudirek 2015, Büyükyıldız 2017a, 2017b. Briefly, a Z-wise interpolation procedure has been adopted to obtain Zeff for heavy charged particles.…”

Section: Methodsmentioning

confidence: 99%

Ağır İyon Terapide İnsan Organları ve Dokularının Yüklü Parçacık Etkileşimleri; Etkin Atom Numarası ve Elektron Yoğunluğu

Büyükyıldız¹

2020

Afyon Kocatepe University Journal of Sciences and Engineering

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In this work, various organs of human and tissues were studied in terms of the effective atomic numbers (Zeff) and electron densities (Ne) in the continuous kinetic energy region for different types of heavy ions. Variations of Zeff and Ne with kinetic energy were investigated and significant variations were noted. In addition, water and tissue equivalences of the given materials with respect to their Zeff and Ne were evaluated based on the results obtained. The best water equivalents were found to be Urinary Bladder_Urine for H, He and C ions and Skeleton Cartilage for Ne ion since differences in Zeff relative to water for H (≤%3), He (≤%1), C (≤%1) and Ne (≤%6) ions were significantly low. Moreover, variations in water equivalences of the materials have been discussed in detail in the continuous energy region. The reported data should be useful when heavy ions are intended to be used in these materials for radiotherapy and dosimetry applications as they represent the interaction of ions with these materials in the continuous kinetic energy region.

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“…The projected range is defined as the average depth to which a charged particle will penetrate when it slows down to rest. 58 The better the radiation shielding, the shorter the projected range. 59 Total stopping power.-The mass stopping power is also an essential parameter that estimates the electron shielding properties.…”

Section: Details Of Radiation Shielding Study On Tellurite Glass Systemmentioning

confidence: 99%

Review—Radiation Shielding Properties of Tellurite and Silicate Glass

Juhim

Chee²,

AWANG³

et al. 2022

ECS J. Solid State Sci. Technol.

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Silicate glass is a popular radiation shielding material due to its abundance on Earth. However, due to simplicity of fabrication, tellurite-based optical glass materials became the primary glass network forming, garnering great scientific and technological relevance for their future uses. Previous studies have stated that the silicate and tellurite glass system might be employed in shielding applications, with metal oxide concentrations balanced with SiO2 and TeO2 content. The inclusion of SiO2 and TeO2 in the glass composition reduces the impact of radiation. In electron radiation, electron interaction activities with glass are more substantial in the low electron energy area. Meanwhile, the proton attenuation factors of the glass samples are smaller than the electrons. There is no discernible difference in the fast neutron effective removal cross-section (ΣR) values of the glass samples in neutron radiation. In the studies of tellurite glasses for gamma radiation shielding, the photon interaction parameters change as a function of material density. The measurements show that adding TeO2 to glass samples improved the gamma protection characteristics of the glasses. This review explains the various material compositions and presents a more in-depth analysis of radiation shielding properties in silicate and tellurite glasses.

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Studies on heavy charged particle interaction, water equivalence and Monte Carlo simulation in some gel dosimeters, water, human tissues and water phantoms

Cited by 23 publications

References 20 publications

Analytical and rheological studies of modified gel dosimeters exposed to X-ray beams

Analytical and rheological studies of modified gel dosimeters exposed to X-ray beams

Ağır İyon Terapide İnsan Organları ve Dokularının Yüklü Parçacık Etkileşimleri; Etkin Atom Numarası ve Elektron Yoğunluğu

Review—Radiation Shielding Properties of Tellurite and Silicate Glass

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