Evaluation of radiation exposure from fluoroscopic examination in small animal veterinary staff using thermoluminescent dosimeters

https://doi.org/10.17221/141/2018-VETMEDCitation:An J., Lim S., Lee S., Kim H., Min K., Cho Y., Lee K. (2019): Evaluation of radiation exposure from fluoroscopic examination in small animal veterinary staff using thermoluminescent dosimeters. Veterinarni Medicina, 64: 266-270.
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The purpose of this study was to evaluate the occupational radiation exposure levels of veterinary staff during fluoroscopic examination using thermoluminescent dosimeters (TLDs). A prospective study was conducted to measure radiation doses in three positioned persons (two restrainers and one observer) using TLDs. The TLDs were placed on the inside and outside of the lead-equivalent protective devices of the panorama mask, thyroid shield, apron and arm shield. The TLDs were placed at five anatomic sites (eye, thyroid, breast, gonad and hand). Radiation exposure was measured in 65 fluoroscopic examinations at 80 kVp and 100 mAs. The doses (mSv) (outside/inside the shield) measured in restrainers A and B and observer C were 3.09/0.59, 3.80/0.65 and 0.63/0.44 in the eye; 2.20/0.73, 1.88/1.10 and 0.79/0.45 in the thyroid; 3.42/0.44, 3.94/2.35 and 0.61/0.34 in the breast; 1.84/0.45, 1.69/0.23 and 0.46/0.36 in the gonad; and 5.56/3.16, 8.29/2.99 and 0.79/0.34 in the hand, respectively. Out of all the lead protection devices, the radiation dose of the hand was the highest in all three participants, with the thyroid radiation dose value being the same as the hand in the observer C. Radiation doses received by the eyes of all three participants were also not negligible. Veterinary workers exposed to radiation through not only radiography but also fluoroscopy should wear protective gear, especially for the eyes.

Barber J., McNulty J. P. (2012): Investigation into scatter radiation dose levels received by a restrainer in small animal radiography. Journal of Small Animal Practice, 53, 578-585  https://doi.org/10.1111/j.1748-5827.2012.01257.x
Canato G.R., Drumond L.F., Paschuk S.A., Asfora V.K., Andrade M.E.A., Denyak V., Schelin H.R. (2014): Occupational exposure assessment in procedures of portable digital veterinary radiology for small size animals. Radiation Physics and Chemistry, 95, 284-287  https://doi.org/10.1016/j.radphyschem.2013.05.042
Dendy PP, Heaton B (2011): Radiobiology and generic radiation risks. In: Dendy PP, Heaton B (eds): Physics for Diagnostic Radiology. 3rd edn. CRC Press, Boca Raton. 397–426 pp.
Levine Jonathan S., Pollard Rachel E., Marks Stanley L. (2014): CONTRAST VIDEOFLUOROSCOPIC ASSESSMENT OF DYSPHAGIC CATS. Veterinary Radiology & Ultrasound, 55, 465-471  https://doi.org/10.1111/vru.12150
Lindell B. (1996): The Risk Philosophy of Radiation Protection. Radiation Protection Dosimetry, 68, 157-163  https://doi.org/10.1093/oxfordjournals.rpd.a031859
López P. Ortiz, Dauer L.T., Loose R., Martin C.J., Miller D.L., Vañó E., Doruff M., Padovani R., Massera G., Yoder C. (2018): ICRP Publication 139: Occupational Radiological Protection in Interventional Procedures. Annals of the ICRP, 47, 1-118  https://doi.org/10.1177/0146645317750356
Macready Dawn M., Johnson Lynelle R., Pollard Rachel E. (2007): Fluoroscopic and radiographic evaluation of tracheal collapse in dogs: 62 cases (2001–2006). Journal of the American Veterinary Medical Association, 230, 1870-1876  https://doi.org/10.2460/javma.230.12.1870
Mayer Monique N., Koehncke Niels K., Belotta Alexandra F., Cheveldae Isaac T., Waldner Cheryl L. (2018): Use of personal protective equipment in a radiology room at a veterinary teaching hospital. Veterinary Radiology & Ultrasound, 59, 137-146  https://doi.org/10.1111/vru.12583
Merriam GR, Worgul BV (1983): Experimental radiation cataract – its clinical relevance. Bulletin of the New York Academy of Medicine 59, 372–392.
Nikolic Boris, Spies James B., Lundsten Michael J., Abbara Suhny (2000): Patient Radiation Dose Associated with Uterine Artery Embolization. Radiology, 214, 121-125  https://doi.org/10.1148/radiology.214.1.r00ja24121
Oh H., Sung S., Lim S., Jung Y., Cho Y., Lee K. (2018): Restrainer exposure to scatter radiation in practical small animal radiography measured using thermoluminescent dosimeters. Veterinární Medicína, 63, 81-86  https://doi.org/10.17221/115/2017-VETMED
Pollard Rachel E. (2012): Imaging Evaluation of Dogs and Cats with Dysphagia. ISRN Veterinary Science, 2012, 1-15  https://doi.org/10.5402/2012/238505
Clement C.H., Stewart F.A., Akleyev A.V., Hauer-Jensen M., Hendry J.H., Kleiman N.J., MacVittie T.J., Aleman B.M., Edgar A.B., Mabuchi K., Muirhead C.R., Shore R.E., Wallace W.H. (2012): ICRP PUBLICATION 118: ICRP Statement on Tissue Reactions and Early and Late Effects of Radiation in Normal Tissues and Organs — Threshold Doses for Tissue Reactions in a Radiation Protection Context. Annals of the ICRP, 41, 1-322  https://doi.org/10.1016/j.icrp.2012.02.001
Vano Eliseo, Gonzalez Luciano, Fernández Jose M., Haskal Ziv J. (2008): Eye Lens Exposure to Radiation in Interventional Suites: Caution Is Warranted. Radiology, 248, 945-953  https://doi.org/10.1148/radiol.2482071800
Wagner Louis K., Eifel Patricia J., Geise Richard A. (1994): Potential Biological Effects Following High X-ray Dose Interventional Procedures. Journal of Vascular and Interventional Radiology, 5, 71-84  https://doi.org/10.1016/S1051-0443(94)71456-1
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