TY - JOUR
T1 - The importance of protection glasses during neuroangiographies
T2 - A study on radiation exposure at the lens of the primary operator
AU - Tavares, J. B.
AU - Leite, Ema Sacadura
AU - Matoso, T.
AU - Neto, L. L.
AU - Biscoito, L.
AU - Campos, Jorge Guedes
AU - Sousa-Uva, A.
PY - 2016
Y1 - 2016
N2 - Background In interventional neuroradiology, few operators routinely use radiation protection glasses. Moreover, in most centers, radiation dose data only accounts for whole body dose without specific information on lens dose. In 2012, the International Commission on Radiological Protection advised that the threshold limit value for the lens should be 20 mSv/year instead of the previous 150 mSv/year limit. The purpose of this study was to compare the radiation dose in the operator's lens during real diagnostic and interventional neuroangiographies, either using or without lead protection glasses. Methods Using the Educational Direct Dosimeter (EDD30 dosimeter), accumulated radiation dose in the lens was measured in 13 neuroangiographies: seven diagnostic and six interventional. Operators with and without radiation protection glasses were included and the sensor was placed near their left eye, closest to the radiation beam. Results Without glasses, the corrected mean dose of radiation in the lens was 8.02 μSv for diagnostic procedures and 168.57 μSv for interventional procedures. Using glasses, these values were reduced to 1.74 μSv and 33.24 μSv, respectively. Conclusion Considering 20 mSv as the suggested annual limit of equivalent dose in the lens, neuroradiologists may perform up to 2,494 diagnostic procedures per year without protecting glasses, a number that increases to 11,494 when glasses are used consistently. Regarding intervention, a maximum of 119 procedures per year is advised if glasses are not used, whereas up to 602 procedures/year may be performed using this protection. Therefore, neuroradiologists should always wear radiation protection glasses.
AB - Background In interventional neuroradiology, few operators routinely use radiation protection glasses. Moreover, in most centers, radiation dose data only accounts for whole body dose without specific information on lens dose. In 2012, the International Commission on Radiological Protection advised that the threshold limit value for the lens should be 20 mSv/year instead of the previous 150 mSv/year limit. The purpose of this study was to compare the radiation dose in the operator's lens during real diagnostic and interventional neuroangiographies, either using or without lead protection glasses. Methods Using the Educational Direct Dosimeter (EDD30 dosimeter), accumulated radiation dose in the lens was measured in 13 neuroangiographies: seven diagnostic and six interventional. Operators with and without radiation protection glasses were included and the sensor was placed near their left eye, closest to the radiation beam. Results Without glasses, the corrected mean dose of radiation in the lens was 8.02 μSv for diagnostic procedures and 168.57 μSv for interventional procedures. Using glasses, these values were reduced to 1.74 μSv and 33.24 μSv, respectively. Conclusion Considering 20 mSv as the suggested annual limit of equivalent dose in the lens, neuroradiologists may perform up to 2,494 diagnostic procedures per year without protecting glasses, a number that increases to 11,494 when glasses are used consistently. Regarding intervention, a maximum of 119 procedures per year is advised if glasses are not used, whereas up to 602 procedures/year may be performed using this protection. Therefore, neuroradiologists should always wear radiation protection glasses.
KW - lead protection glasses
KW - lens radiation exposure
KW - Radiation protection
UR - http://www.scopus.com/inward/record.url?scp=84966577668&partnerID=8YFLogxK
U2 - 10.1177/1591019916628322
DO - 10.1177/1591019916628322
M3 - Article
C2 - 26842605
AN - SCOPUS:84966577668
SN - 1591-0199
VL - 22
SP - 368
EP - 371
JO - Interventional Neuroradiology
JF - Interventional Neuroradiology
IS - 3
ER -