The Development of Bismuth Shielding to Protect the Thyroid Gland in Radiations Environment

Kim, Chang-Gyu

doi:10.17485/ijst/2016/v9i25/97175

Cited by 4 publications

(1 citation statement)

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“…The glass dosimeter is capable of repeated measurement and readout of the radiation radiation dose because the silver ion particle fluorescence center produced by irradiation is not destroyed by repeated measurement. In addition, the measurable dose range is 10μGy to 500Gy, and it has wide measurement range, low fading effects and excellent direction and energy dependence [9][10][11][12][13]. Tungsten is an off-white solid metal with an atomic number of 74, which has the meaning of 'heavy stone'.…”

Section: Introductionmentioning

confidence: 99%

Usefulness of tungsten shield in mammography

Kim¹

2018

IJET

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Background/Objectives: In order to minimize unnecessary artifacts and medical radiation dose for acquiring final diagnostic medical image with high diagnostic value in X-ray mammography, a tungsten shield was produced to evaluate the usefulness of clinical application.Methods/Statistical analysis: The radiation dose at the time of mammography was measured in the same posture as breast cancer examination in a clinical hospital for health screening. In the R - CC, L - CC. R - MLO, L- MLO posture mammography, the distribution of radiation dose for each part by placing a glass dose device at the breast position with the breast equivalent phantom. In order to reduce measurement error, mammography was repeated five times.Findings: When the eco-friendly shield was used, the average dose was 40 ± 0.34μGy, which showed a radiation dose reduction efficiency of 64.6% and a reduction factor of 2.8. Using eco-friendly shield tungsten shield, reproducibility of fibrin was 4.5, reproducibility of specks was 4.0, and reproducibility of the mass was 4.0 ± 0.2, resulting in 12.5, exceeding the approved acceptance criteria of 10.Improvements/Applications: This result is expected to be used as an important basic data for predicting patient's radiation dose, determining test method and decreasing medical radiation dose in future breast cancer examination.

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Section: Introductionmentioning

confidence: 99%