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Congress: ECR25
Poster Number: ESI-17921
Type: EuroSafe Imaging Poster
Authorblock: M. Fujisawa, Y. Haga, M. Sota, Y. Kaga, M. Abe, Y. Inaba, K. Chida; Sendai/JP
Disclosures:
Masaki Fujisawa: Nothing to disclose
Yoshihiro Haga: Nothing to disclose
Masahiro Sota: Nothing to disclose
Yuji Kaga: Nothing to disclose
Mitsuya Abe: Nothing to disclose
Yohei Inaba: Nothing to disclose
Koichi Chida: Nothing to disclose
Keywords: Eyes, Radiographers, Radioprotection / Radiation dose, Nuclear medicine conventional, PET, Dosimetry, Radiation safety, Dosimetric comparison, Occupational / Environmental hazards
Purpose or learning objective Following the recommendations of the International Commission on Radiological Protection (ICRP), interest in radiation exposure to the eye lens has increased [1]. The International Atomic Energy Agency (IAEA) has identified five medical procedures that require particular attention to minimize lens exposure, one of which is nuclear medicine examinations [2]. Among various medical tasks, nuclear medicine procedures are associated with relativeely high occupational radiation exposure (Fig. 1) [3]. However, research specifically addressing lens exposure among medical staff remains limited compared to...
Read more Methods or background The study included four nurses working in PET imaging, six radiological technologists specializing in PET imaging, and four radiological technologists engaged in other radioisotope (RI) examinations. Radiation exposure was measured using an eye lens dosimeter (DOSIRIS™, Institute for Radiological Protection and Nuclear Safety [IRSN], France) and a personal dosimeter (Glass Badge, Chiyoda Technol, Japan). The eye lens dosimeter was positioned near the left eye, while the personal dosimeter was worn on the left side of the neckThe eye lens dosimeter...
Read more Results or findings Personal dosimeter measurements indicated that the annual effective dose, skin dose, and lens dose among nuclear medicine workers were approximately 1 mSv, with relatively small interindividual variations (Fig. 3). Differences among the annual effective dose, skin dose, and lens dose were minimal.However, when comparing lens doses recorded by the personal dosimeter and the dedicated eye lens dosimeter, the latter generally yielded higher values across most staff members (Fig. 4). Figure 5 illustrates the correlation between radiation dose, number of procedures...
Read more Conclusion Radiation exposure among nuclear medicine workers was not alarmingly high, and awareness of radiation protection appears to be improving. The estimated annual lens dose was relatively low compared to other tasks [6-15]. However, given the significant reduction in the radiation-induced cataract threshold, proper management of lens exposure remains crucial. Our findings indicate that conventional personal dosimeters may not accurately assess lens exposure in nuclear medicine examinations.Furthermore, as lens dose did not exhibit a strong positive correlation with number of procedures...
Read more References ICRP. ICRP Statement on Tissue Reactions / Early and Late Effects of Radiation in Normal Tissues and Organs, Threshold Doses for Tissue Reactions in a Radiation Protection Context. In: 2012, ICRP Publication 118. Ann. ICRP 41(1/2). IAEA. Implications for Occupational Radiation Protection of the New Dose Limit for the Lens of the Eye. TECDOC-1731. International Atomic Energy Agency, Vienna, Austria, 2013. Baudin C, Vacquier B, Thin G, Chenene L, Guersen J, Partarrieu I, Louet M, Ducou Le Pointe H, Mora S, Verdun-Esquer...
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