Estimation of dose reference levels in computed tomography for select procedures in Kerala, India

Sir, The authors in their earlier article [1] had estimated tentatively the diagnostic reference levels (DRL) as the third quartile values of weighted computed tomography dose index (CTDI w ), volumetric CTDI (CTDI v ), and dose length product (DLP); after a detailed survey of the distribution of do...

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Bibliographic Details
Published in:Journal of medical physics 2015-04, Vol.40 (2), p.115-119
Main Authors: Saravanakumar, A, Vaideki, K, Govindarajan, K, Jayakumar, S, Devanand, B
Format: Article
Language:English
Subjects:
Abdomen
CAT scans
Letter to Editor
Medical equipment
Patients
Scanners
Tomography
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Summary:Sir, The authors in their earlier article [1] had estimated tentatively the diagnostic reference levels (DRL) as the third quartile values of weighted computed tomography dose index (CTDI w ), volumetric CTDI (CTDI v ), and dose length product (DLP); after a detailed survey of the distribution of dose received by patients during diagnosis using CT scanners located in Puducherry region of South India. {Figure 1}{Figure 2} From [Figure 1] and [Figure 2], it can be noted that the percentage difference between the measured and console CTDI v and DLP for the head, chest, and abdomen procedure lies within the acceptable limits (expected +/-20% and maximum +/-40%) recommended by Atomic Energy Regulatory Board (AERB), [8] which is based on International Commission on Radiological Protection (ICRP) standards.
ISSN:0971-6203
1998-3913
DOI:10.4103/0971-6203.158701