Experimental Evaluation of Scattered X-Ray Spectra due to X-Ray Therapeutic and Diagnosis Equipment for Eye Lens Dosimetry of Medical Staff

Kowatari, Munehiko; Nagamoto, Keisuke; Nakagami, Koich; Tanimura, Yoshihiko; Moritake, Takashi; Kunugita, Naoki

doi:10.14407/jrpr.2021.00220

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…Semakin tebal ukuran Pb yang digunakan, maka berat apron akan mengalami peningkatan, hal ini menyebabkan risiko cedera pada tulang belakang, pinggul, lutut dan pergelangan kaki (Aghaz et al, 2016;Dalah et al, 2018;Endo et al, 2021;Haga et al, 2017;Kowatari et al, 2022;Mori et al, 2014;Oyar et al, 2012;Pan et al, 2016;Ramanathan et al, 2021).…”

Section: Metodeunclassified

Analisis Efektivitas Apron 0.35 mmPb dalam Melindungi Pekerja Radiasi pada Pemeriksaan Radiografi

Irsal,

Sutoro,

Widiatmoko

et al. 2023

j. kesehat.

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Latar Belakang: Quality Control (QC) pada apron wajib dilakukan satu tahun sekali. Hal ini bertujuan untuk memastikan keamanan pada pekerja radiasi sebelum melakukan prosedur pemeriksaan radiologi sehingga penerimaan dosis radiasi tidak melebihi 20 mSv/ tahun.Tujuan: Menganalisis efektivitas penggunaan apron 0.35 mmPb untuk melindungi pekerja radiasi pada pemeriksaan radiografi.Metode: Penelitian ini dilakukan di laboratorium Jurusan Teknik Radiodiagnostik dan Radioterapi, Poltekkes Kemenkes Jakarta II. Prosedur yang dilakukan pada penelitian adalah dengan simulasi apabila pekerja menerima paparan radiasi primer dan sekunder pada jarak 100 cm dengan rentang faktor eksposi 45-100kVp. Apron yang digunakan berbahan timbal (Pb) dengan ketebalan 0.35 mmPb dan, untuk pekerja radiasi, diganti dengan menggunakan pantom anthorophomorpic. Penggunaan luas lapangan sesuai kondisi klinis yaitu 18 cm x 24 cm, 43 cm x 35 cm, dan kemudian dilakukan analisis efektivitas apron Pb terhadap perubahan faktor eksposi.Hasil: Hasil penelitian menunjukkan bahwa efektivitas penggunaan apron 0.35 mmPb pada rentang tegangan tabung 45-100kVp untuk kedua penggunaan luas lapangan memiliki nilai persentasi yang sama 99.9-93%.Kesimpulan: Peningkatan tegangan tabung menyebabkan terjadinya penurunan atenuasi apron Pb.

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Section: Metodeunclassified

Analisis Efektivitas Apron 0.35 mmPb dalam Melindungi Pekerja Radiasi pada Pemeriksaan Radiografi

Irsal,

Sutoro,

Widiatmoko

et al. 2023

j. kesehat.

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“…It is essential to reduce patient and occupational exposure to radiation [ 1 , 2 ]. Many studies have explored radiation dose optimization, and protection from occupational radiation exposure, particularly during interventional radiology (IR) [ 3–5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of backscatter radiation on the occupational eye-lens dose

Ohno,

Konta,

Shindo

et al. 2024

Journal of Radiation Research

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We quantified the level of backscatter radiation generated from physicians’ heads using a phantom. We also evaluated the shielding rate of the protective eyewear and optimal placement of the eye-dedicated dosimeter (skin surface or behind the Pb-eyewear). We performed diagnostic X-rays of two head phantoms: Styrofoam (negligible backscatter radiation) and anthropomorphic (included backscatter radiation). Radiophotoluminescence glass dosimeters were used to measure the eye-lens dose, with or without 0.07-mm Pb-equivalent protective eyewear. We used tube voltages of 50, 65 and 80 kV because the scattered radiation has a lower mean energy than the primary X-ray beam. The backscatter radiation accounted for 17.3–22.3% of the eye-lens dose, with the percentage increasing with increasing tube voltage. Furthermore, the shielding rate of the protective eyewear was overestimated, and the eye-lens dose was underestimated when the eye-dedicated dosimeter was placed behind the protective eyewear. We quantified the backscatter radiation generated from physicians’ heads. To account for the effect of backscatter radiation, an anthropomorphic, rather than Styrofoam, phantom should be used. Close contact of the dosimeter with the skin surface is essential for accurate evaluation of backscatter radiation from physician’s own heads. To assess the eye-lens dose accurately, the dosimeter should be placed near the eye. If the dosimeter is placed behind the lens of the protective eyewear, we recommend using a backscatter radiation calibration factor of 1.2–1.3.

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