scholarly journals Occupational radiation dose to eyes from endoscopic retrograde cholangiopancreatography procedures in light of the revised eye lens dose limit from the International Commission on Radiological Protection

2013 ◽  
Vol 86 (1022) ◽  
pp. 20120289 ◽  
Author(s):  
U O’Connor ◽  
A Gallagher ◽  
L Malone ◽  
G O’Reilly
Keyword(s):  
Radiation Dose ◽  
Endoscopic Retrograde Cholangiopancreatography ◽  
International Commission ◽  
Eye Lens ◽  
Radiological Protection ◽  
Dose Limit ◽  
Endoscopic Retrograde ◽  
Eye Lens Dose ◽  
Occupational Radiation

ELECTRON EYE-LENS OPERATIONAL DOSE COEFFICIENTS

2020 ◽  
Vol 188 (3) ◽  
pp. 372-377
Author(s):  
J Dubeau ◽  
J Sun
Keyword(s):  
Electron Transport ◽  
International Commission ◽  
Eye Lens ◽  
Radiological Protection ◽  
Electron Radiation ◽  
Dose Limit ◽  
Eye Lens Dose ◽  
Beta Emitters ◽  
The Face ◽  
Dose Coefficients

Abstract In 2012, the International Commission on Radiological Protection issued a recommendation for a reduced annual eye-lens dose limit in the face of mounting evidence of the risk of cataract induction. This led to worldwide research efforts in various areas including the dose simulation in realistic eye-models, the production of dosimeters and the elaboration of protection and operation fluence to eye-lens dose coefficients. In this last case, much efforts have been expanded with regards to photon operational coefficients for Hp (3) but much less for electron radiation. In this work, Hp (3) coefficients for electrons are presented following simulations using MCNP and compared to those that are available in the literature. It is found that, at energies of 1 MeV and less, Hp (3) coefficients depend strongly on the selected electron transport options and on the dose tally volume. The effect of these differences is demonstrated for two beta emitters.

ESTIMATION OF Hp(3) TO THE EYE LENS OF INTERVENTIONAL RADIOLOGISTS—RELATION BETWEEN THE EYE LENS DOSE AND RADIOLOGIST’S HEIGHT

2019 ◽  
Vol 187 (4) ◽  
pp. 409-417 ◽  
Author(s):  
Takuro Tanaka ◽  
Kosuke Matsubara ◽  
Atsushi Fukuda ◽  
Satoshi Kobayashi
Keyword(s):  
Interventional Radiology ◽  
Radiation Dose ◽  
Dose Reduction ◽  
Optically Stimulated Luminescence ◽  
Reduction Ratio ◽  
Eye Lens ◽  
Median Dose ◽  
Dose Limit ◽  
Lead Apron ◽  
Occupational Radiation

Abstract The aim of the study was to estimate occupational radiation dose to the eye lens of radiologists and the dose reduction ratio of lead glasses during interventional radiology. Three interventional radiologists monitored Hp(3) using small-type optically stimulated luminescence dosemeters attached to the left inside and outside of the lead glasses with 0.07-mmPb [Hp(3)eye]. Hp(10) and Hp(0.07) were monitored, respectively, by attaching the personal dosemeter to the lead neck collar above the lead apron. The median Hp(3)eye with lead glasses and the median dose reduction ratio of lead glasses for the three radiologists were 8.02 mSv/y and 57.7%, respectively. The median Hp(3)eye without lead glasses [Hp(3)eye-w/o] for the three radiologists was 18.6 mSv/y, but Hp(3)eye-w/o for one of the radiologists was 24.1 mSv/y. Monitoring occupational radiation dose to the eye lens is important because interventional radiologists are at risk of exceeding the new dose limit.

scholarly journals Occupational Radiation Dose, Especially for Eye Lens: Hp(3), in Medical Staff Members Involved in Computed Tomography Examinations

2021 ◽  
Vol 11 (10) ◽  
pp. 4448
Author(s):  
Minoru Osanai ◽  
Hidenori Sato ◽  
Kana Sato ◽  
Kohsei Kudo ◽  
Masahiro Hosoda ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Radiation Protection ◽  
Medical Staff ◽  
Shielding Effect ◽  
Eye Lens ◽  
Radiological Protection ◽  
Ct Examination ◽  
Radiation Dose Exposure ◽  
Occupational Radiation

Radiation dose management of medical staff has become increasingly important. Particularly, based on the statement by the International Commission on Radiological Protection (ICRP) in 2011, a new lower equivalent dose limit for the eye lens is being established in each country. Although many reports have discussed the occupational radiation dose in interventional radiology (IR), few studies have examined the dose during computed tomography (CT) examinations. This study investigated the radiation dose exposure to medical staff present in the CT room during irradiation, with particular focus on the exposure to eye lens. The radiation dose exposure to those who assist patients during head, chest and upper abdomen CT examination was measured in a phantom study. The radiation dose exposure with scattered radiation was never negligible (i.e., high); Hp(3) was the highest in head CT examination, at 0.44 mSv per examination. Furthermore, the shielding effect of radiation protection glasses was large, and radiation protection glasses are useful tools for the medical staff who are involved in CT examinations. The justification and optimisation should be carefully considered in assistant actions.

scholarly journals Radiation eye dose to medical staff during respiratory endoscopy under X-ray fluoroscopy

2020 ◽  
Vol 61 (5) ◽  
pp. 691-696
Author(s):  
Yoshihiro Haga ◽  
Koichi Chida ◽  
Yuichiro Kimura ◽  
Shinsuke Yamanda ◽  
Masahiro Sota ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Medical Staff ◽  
International Commission ◽  
Radiological Protection ◽  
Dose Equivalent ◽  
Dose Limit ◽  
Clinical Value ◽  
Correct Evaluation ◽  
X Ray ◽  
The Mean

Abstract Although the clinical value of fluoroscopically guided respiratory endoscopy (bronchoscopy) is clear, there have been very few studies on the radiation dose received by staff during fluoroscopically guided bronchoscopy. The International Commission on Radiological Protection (ICRP) is suggesting reducing the occupational lens dose limit markedly from 150 to 20 mSv/year, averaged over defined periods of five years. The purpose of this study was to clarify the current occupational eye dose of bronchoscopy staff conducting fluoroscopically guided procedures. We measured the occupational eye doses (3-mm-dose equivalent, Hp(3)) of bronchoscopy staff (physicians and nurses) over a 6-month period. The eye doses of eight physicians and three nurses were recorded using a direct eye dosimeter, the DOSIRIS. We also estimated eye doses using personal dosimeters worn at the neck. The mean ± SD radiation eye doses (DOSIRIS) to physicians and nurses were 7.68 ± 5.27 and 2.41 ± 1.94 mSv/6 months, respectively. The new lens dose limit, 20 mSv/year, may be exceeded among bronchoscopy staff, especially physicians. The eye dose of bronchoscopy staff (both physicians and nurses) was underestimated when measured using a neck dosimeter. Hence, the occupational eye dose of bronchoscopy staff should be monitored. To reduce the occupational eye dose, we recommend that staff performing fluoroscopically guided bronchoscopy wear Pb glasses. correct evaluation of the lens dose [Hp(3)] using an eye dosimeter such as the DOSIRIS is necessary for bronchoscopy staff.

MINIMIZING THE EXPOSURE TO THE EYE LENS OF RADIOLOGIC TECHNOLOGISTS ASSISTING PATIENTS DURING CHEST X RAYS: A PHANTOM STUDY

2021 ◽  
Vol 193 (1) ◽  
pp. 43-54
Author(s):  
Yasuda Mitsuyoshi ◽  
Funada Tomoya ◽  
Sato Hisaya ◽  
Kato Kyoichi
Keyword(s):  
Radiation Protection ◽  
Phantom Study ◽  
International Commission ◽  
Eye Lens ◽  
Radiological Protection ◽  
X Rays ◽  
Radiologic Technologists ◽  
Maximum Reduction ◽  
The Right

Abstract As chest x rays involve risks of patients falling, radiologic technologists (technologists) commonly assist patients, and as the assistance takes place near the patients, the eye lenses of the technologists are exposed to radiation. The recommendations of the International Commission on Radiological Protection suggest that the risk of developing cataracts due to lens exposure is high, and this makes it necessary to reduce and minimize the exposure. The present study investigated the positions of technologists assisting patients that will minimize exposure of the eye lens to radiation. The results showed that it is possible to reduce the exposure by assisting from the following positions: 50% at the sides rather than diagonally behind, 10% at the right side of the patient rather than the left and 40% at 250 mm away from the patient. The maximum reduction with radiation protection glasses was 54% with 0.07 mmPb and 72% with 0.88 mmPb.

scholarly journals Radiation Dose to the Eye Lens Through Radiological Imaging Procedures at the Surgical Workplace During Trauma Surgery

2019 ◽  
Vol 16 (20) ◽  
pp. 3850
Author(s):  
Apelmann ◽  
Kowald ◽  
Weinrich ◽  
Dischinger ◽  
Nienhaus ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Trauma Surgery ◽  
Eye Lens ◽  
Radiological Imaging ◽  
Imaging Procedures ◽  
Drastic Reduction ◽  
Dose Limit ◽  
Eye Lens Dose ◽  
Surgical Assistants ◽  
Trauma Surgeons

Background: Due to the drastic reduction of the eye lens dose limit from 150 mSv per year to 20 mSv per year since 2018, the prospective investigation of the estimated dose of the eye lens by radiological imaging procedures at the surgical site during trauma surgery in the daily work process was carried out. This was also necessary because, as experience shows, with changes in surgical techniques, there are also changes in the use of radiological procedures, and thus an up-to-date inventory can provide valuable information for the assessment of occupationally induced radiation exposure of surgical personnel under the current conditions. Methods: The eye lens radiation exposure was measured over three months for five trauma surgeons, four hand surgeons and four surgical assistants with personalized LPS-TLD-TD 07 partial body dosimeters Hp (0.07). A reference dosimeter was deposited at the surgery changing room. The dosimeters were sent to the LPS (Landesanstalt für Personendosimetrie und Strahlenschutzausbildung) measuring institute (National Institute for Personal Dosimetry and Radiation Protection Training, Berlin) for evaluation after 3 months. The duration of the operation, occupation (assistant, surgeon, etc.), type of surgery (procedure, diagnosis), designation of the X-ray unit, total duration of radiation exposure per operation and dose area product per operation were recorded. Results: Both the evaluation of the dosimeters by the trauma surgeons and the evaluation of the dosimeters by the hand surgeons and the surgical assistants revealed no significant radiation exposure of the eye lens in comparison to the respective measured reference dosimeters. Conclusions: Despite the drastic reduction of the eye lens dose limit from 150 mSv per year to 20 mSv per year, the limit for orthopedic, trauma and hand surgery operations is well below the limit in this setting.

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