Radioactivity determination of sealed pure beta-sources by surface dose measurements and Monte Carlo simulations

Choi, Cheol Young; Jung, Sung-Eun; Choi, Kang-Hyuk; Son, Kwang Jae; Lee, Jun Sig; Ye, Sung-Joon

doi:10.1016/j.nima.2016.01.085

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…The surface dose rate  D w (at 5 μm depth) in water, using the extrapolation chamber is given by equation (5) (IAEA 2002, ICRU 2004, Chang et al 2016:…”

Section: Specification Of Beta Sources Used In Brachytherapymentioning

confidence: 99%

“…It may be noted that in the published literature (IAEA 2002, ICRU 2004, Chang et al 2016, the effect due to back wall being different from water was addressed through a correction factor, k back . Whereas in the present study, all the wall materials of the extrapolation chamber (front, side and back walls) being different from water is accounted through k wall instead of determining separate correction factors for each side of the extrapolation chamber.…”

Section: Specification Of Beta Sources Used In Brachytherapymentioning

confidence: 99%

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Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

et al. 2018

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This paper describes the evaluation of dosimetry characteristics of an in-house developed 177Lu skin patch source for treatment of non-melanoma skin cancer. A 177Lu skin patch source based on Nafion-115 membrane backbone containing 3.46 ± 0.01 mCi of activity was used. Activity measurement of the patch source was based on gamma ray spectrometry using a HPGe detector. The efficiencies of the HPGe detector were fitted using an orthogonal polynomial function. The absorbed dose rate to water at 5 μm depth in water was determined using an extrapolation chamber, EBT3 Gafchromic film and compared with Monte Carlo methods. The correction factors such as Bragg-Gray stopping power ratio of water-to-air and chamber wall material being different from water, needed to be applied on measurements for establishing the dose rate at 5 μm depth, were calculated using the Monte Carlo method. Absorbed dose rate at 5 μm depth in water (surface dose rate) measured using an extrapolation chamber and EBT3 Gafchromic film were 9.9 ± 0.7 and 8.2 ± 0.1 Gy h−1 mCi−1 respectively for the source activity of 3.46 ± 0.01 mCi. The surface dose rate calculated using the Monte Carlo method was 8.7 ± 0.2 Gy h−1 mCi−1, which agrees reasonably well with measurement. The measured dose rate per mCi offers scope for ascertaining treatment time required to deliver the dose for propitious therapeutic outcome. Additionally, on-axis depth dose and lateral dose profiles at 5 μm and 1 mm depth in water phantom were also calculated using the Monte Carlo method.

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“…The surface dose rate  D w (at 5 μm depth) in water, using the extrapolation chamber is given by equation (5) (IAEA 2002, ICRU 2004, Chang et al 2016:…”

Section: Specification Of Beta Sources Used In Brachytherapymentioning

confidence: 99%

Section: Specification Of Beta Sources Used In Brachytherapymentioning

confidence: 99%

Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

et al. 2018

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Correction factors for non-uniform large-area reference sources

Silva

Siqueira

Nascimento

et al. 2020

Applied Radiation and Isotopes

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RETRACTED: Surface dose rate variations in planar and curved geometries of 106Ru/106Rh plaque sources for ocular tumors

Bakshi

Shrivastava²,

Chattaraj³

et al. 2021

Physica Medica

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Radioactivity determination of sealed pure beta-sources by surface dose measurements and Monte Carlo simulations

Cited by 3 publications

References 23 publications

Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

Correction factors for non-uniform large-area reference sources

RETRACTED: Surface dose rate variations in planar and curved geometries of 106Ru/106Rh plaque sources for ocular tumors

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Radioactivity determination of sealed pure beta-sources by surface dose measurements and Monte Carlo simulations

Cited by 3 publications

References 23 publications

Dosimetry of indigenously developed 177Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

Dosimetry of indigenously developed 177Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

Correction factors for non-uniform large-area reference sources

RETRACTED: Surface dose rate variations in planar and curved geometries of 106Ru/106Rh plaque sources for ocular tumors

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Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods

Dosimetry of indigenously developed ¹⁷⁷Lu patch source for surface brachytherapy—Experimental and Monte Carlo methods