ESR dosimeter material properties of phenols compound exposed to radiotherapeutic electron beams

Gallo, Salvatore; Iacoviello, Giuseppina; Bartolotta, A.; Dondi, Daniele; Panzeca, S.; Marrale, Maurizio

doi:10.1016/j.nimb.2017.06.004

Cited by 27 publications

(9 citation statements)

References 72 publications

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“…Over the years, several different systems able to measure the quantity and quality of ionizing radiation in radiation therapy (RT) have been developed [1][2][3]. These include, for instance, ionization chambers, radiographic and radiochromic films, semiconductor detectors, thermoluminescent and optically stimulated luminescent detectors, scintillation dosimeters and electron spin resonance dosimeters [4][5][6][7][8][9]. Currently, there is a wide choice of dosimeters that can allow to characterize radiation beams used in RT practices [10,11].…”

Section: Introductionmentioning

confidence: 99%

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Gallo

Lizio

Monti

et al. 2020

J. Phys. D: Appl. Phys.

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The use of synthetic gel matrices prepared with poly(vinyl-alcohol) (PVA) cross-linked by glutaraldehyde (GTA) contributed to enhance the interest toward radiochromic Fricke gel (FG) dosimeters. As it occurs in several chemical dosimeters, the response of PVA-GTA Fricke gels could be affected by temperature. Aim of this work is to study the dependence of the dosimetric properties of PVA-GTA Fricke gel dosimeters both on the irradiation temperature and on temperature changes possibly occurring between the irradiation and readout phases. Such effects were investigated by means of magnetic resonance imaging (MRI) and optical absorbance (OA) measurements.

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Section: Introductionmentioning

confidence: 99%

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Gallo

Lizio

Monti

et al. 2020

J. Phys. D: Appl. Phys.

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“…Nowadays, electron paramagnetic resonance (EPR) dosimetry is widely employed for radiation measurements with several compounds such as ammonium tartrate [1][2][3][4][5], lithium formate [6], dithionates, [7], phenolic compounds [8][9][10][11][12] and sugar [13,14] and others [15][16][17][18][19]. However, crystalline L-α-alanine is the most adopted material and is formally accepted as a secondary standard for high-dose measurements (kGy) and transfer dosimetry [20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Alanine films for EPR dosimetry of low-energy (1–30 keV) X-ray photons

D'Oca

Marrale

Abbene

et al. 2019

Nuclear Instruments and Methods in Physics Research Section B:

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L-α-alanine has aroused considerable interest for use in radiation EPR dosimetry and has been formally accepted as a secondary standard for high-dose (kGy) and transfer dosimetry of high-energy photons and electrons. In this work, we extended the investigation of the energy response of alanine EPR films in the low energy range for X-photons (1-30 keV). Electron Paramagnetic Spin Resonance (EPR) measurements were performed on Kodak BioMax alanine films exposed to low-energy X-rays from a Cu-, Wand Mo-targets tube operating at voltages up to 30 kV. Films were chosen because of the low penetration of the soft X-rays used. The response of alanine to low-energy X-rays was characterized experimentally and the relative response (with respect to high energy photons) was found to be between 0.8 and 0.9 for Cu-and Wtube X-rays, and 1.0 for Mo-tube X-rays. The attenuation profiles were investigated and it was found that 1 mm of film material reduces the intensity of the X-ray-beam by about 70%, 50% and 40% for Cu-, Wand Mo-tube X-rays, respectively. Monte Carlo simulations were performed to model the energy release as well as the depth dose profiles for the various radiation beams used. These data are considered relevant

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“…Therefore, one must know the stopping power and range values for such materials. Besides developing the new dosimeter materials, it is also important to know the stopping power and range values for the estimating the obtained dose by target [2,3], this makes possible to estimate the effect of the electron beams in the target. These values determined or read from the database in the radiation therapy systems.…”

Section: Introductionmentioning

confidence: 99%

Estimating the effect of electron beam interactions with biological tissues

Yüksel

Tufan

2018

Can. J. Phys.

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The stopping power and range for electrons in matter are the most important parameters in predicting the consequences of the electrons interacting with matter. In this work, we used our previously developed method to calculate these parameters. In our calculation method, the main parameter is the velocity-dependent electronic charge density of the target, which we obtained by using Roothaan–Hartree–Fock (RHF) wave functions. For range calculations, we used the continuous slowdown approach (CSDA), which neglects the energy-loss fluctuations so the incident particle loses its energy in a medium continuously at a rate equal to the total stopping power. The stopping power and CSDA range values have been calculated for electrons incident on brain, breast, and eye tissues. Obtained results have been compared with the available data.

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ESR dosimeter material properties of phenols compound exposed to radiotherapeutic electron beams

Cited by 27 publications

References 72 publications

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Alanine films for EPR dosimetry of low-energy (1–30 keV) X-ray photons

Estimating the effect of electron beam interactions with biological tissues

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ESR dosimeter material properties of phenols compound exposed to radiotherapeutic electron beams

Cited by 27 publications

References 72 publications

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Temperature behavior of radiochromic poly(vinyl-alcohol)-glutaraldehyde Fricke gel dosimeters in practice

Alanine films for EPR dosimetry of low-energy (1–30 keV) X-ray photons

Estimating the effect of electron beam interactions with biological tissues

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Product

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Alanine films for EPR dosimetry of low-energy (1–30 keV) X-ray photons