Restrainer exposure to scatter radiation in practical small animal radiography measured using thermoluminescent dosimeters 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. Veterinarni Medicina, 63: 81-86.
download PDF
This study was aimed at estimating restrainer exposure to scatter radiation in veterinary radiography using thermoluminescent dosimeters (TLDs) in different positions, and at different anatomic regions. A prospective study was conducted to measure exposure dose of two restrainers: A (cathode side) and B (anode side), and an observer C (at a 1-meter distance from the X-ray table) over two months. Protective devices included panorama mask, thyroid shield and arm shield. TLDs were placed on the inside and outside of the protective gear at five different anatomic sites (eye, thyroid, breast, gonad and arm). The study data consisted of 778 exposures, 82 patients (78 dogs, four cats), a mean kVp of 58.7 and a mean mAs of 11.4. The doses (outside the shield/inside the shield, in mSv) measured by restrainers A, B and C were eye (3.04/0.42), (2.29/0.17), (0.55/0.01), thyroid (2.93/0.01), (1.97/0.01), (0.19/0.01), breast (1.01/0.04), (0.73/0.01), (0.32/0.01), gonad (0.07/0.01), (0.01/0.01), (0.16/0.01) and arm (2.81/1.43), (1.17/0.01), (0.08/0.01), respectively. This study describes the extent of occupational radiation exposure in small animal radiography. The exposure dose for eyes outside lead protection showed the highest value in all participants. With lead protection, the reduction in the exposure dose of eyes was significant (A: 86%, B: 93%, C: 98%), and the highest reduction was 99% in the thyroid region. These results suggest the necessity of radiation shields in manual restraint, particularly for eye protection.
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
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
Dendy PP, Heaton B (2011): 12. Radiobiology and generic radiation risks. In: Dendy PP, Heaton B (eds): Physics for Diagnostic Radiology. 3rd edn. CRC Press. 397–426.
Häusler Uwe, Czarwinski Renate, Brix Gunnar (2009): Radiation exposure of medical staff from interventional x-ray procedures: a multicentre study. European Radiology, 19, 2000-2008
Lindell B. (1996): The Risk Philosophy of Radiation Protection. Radiation Protection Dosimetry, 68, 157-163
Martin C. J. (2009): A review of radiology staff doses and dose monitoring requirements. Radiation Protection Dosimetry, 136, 140-157
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
Olgar T, Bor D, Berkmen G, Yazar T (2009): Patient and staff doses for some complex x-ray examinations. Journal of Radiological Protection, 29, 393-407
Seifert H, Luepke M, Niehaus H, Meyer-Lindenberg A (2007): Radiation exposure of the pet owner during standardised X-ray diagnostic examinations of dogs and cats. Berliner und Munchener tierarztliche Wochenschrift 120, 251–259.
Shepard S. Jeff, Wang Jihong, Flynn Michael, Gingold Eric, Goldman Lee, Krugh Kerry, Leong David L., Mah Eugene, Ogden Kent, Peck Donald, Samei Ehsan, Wang Jihong, Willis Charles E. (2009): An exposure indicator for digital radiography: AAPM Task Group 116 (Executive Summary). Medical Physics, 36, 2898-2914
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
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
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
Williams J R (1997): The interdependence of staff and patient doses in interventional radiology.. The British Journal of Radiology, 70, 498-503
download PDF

© 2018 Czech Academy of Agricultural Sciences