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Radiation Protection Dosimetry Advance Access published online on October 28, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp235
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

ESTIMATION OF SKIN ENTRANCE DOSES (SEDs) FOR COMMON MEDICAL X-RAY DIAGNOSTIC EXAMINATIONS IN INDIA AND PROPOSED DIAGNOSTIC REFERENCE LEVELS (DRLs)

A. U. Sonawane1,*, V. K. Shirva1 and A. S. Pradhan2

1 Radiological Safety Division, Atomic Energy Regulatory Board, Mumbai 400 094, India
2 Bhabha Atomic Research Centre, Mumbai 400 094, India

* Corresponding author: ausonawane{at}aerb.gov.in

Received April 16, 2009, amended September 16, 2009, accepted September 23, 2009

Skin entrance doses (SEDs) were estimated by carrying out measurements of air kerma from 101 X-ray machines installed in 45 major and selected hospitals in the country by using a silicon detector-based dose Test-O-Meter. 1209 number of air kerma measurements of diagnostic projections for adults have been analysed for seven types of common diagnostic examinations, viz. chest (AP, PA, LAT), lumbar spine (AP, LAT), thoracic spine (AP, LAT), abdomen (AP), pelvis (AP), hip joints (AP) and skull (PA, LAT) for different film-screen combinations. The values of estimated diagnostic reference levels (DRLs) (third quartile values of SEDs) were compared with guidance levels/DRLs of doses published by the IAEA-BSS-Safety Series No. 115, 1996; HPA (NRPB) (2000 and 2005), UK; CRCPD/CDRH (USA), European Commission and other national values. The values of DRLs obtained in this study are comparable with the values published by the IAEA-BSS-115 (1996); HPA (NRPB) (2000 and 2005) UK; EC and CRCPD/CDRH, USA including values obtained in previous studies in India.


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