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Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu

The aim of this article is to assess Tamil Nadu pediatric computed tomography (CT) diagnostic reference levels (DRLs) by collecting radiation dose data for the most commonly performed CT examinations. This work was performed for thirty CT scanners installed in various parts of the Tamil Nadu region....

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Autores principales: Saravanakumar, A., Vaideki, K., Govindarajan, K. N., Jayakumar, S., Devanand, B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5370338/
https://www.ncbi.nlm.nih.gov/pubmed/28405108
http://dx.doi.org/10.4103/0971-6203.202425
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author Saravanakumar, A.
Vaideki, K.
Govindarajan, K. N.
Jayakumar, S.
Devanand, B.
author_facet Saravanakumar, A.
Vaideki, K.
Govindarajan, K. N.
Jayakumar, S.
Devanand, B.
author_sort Saravanakumar, A.
collection PubMed
description The aim of this article is to assess Tamil Nadu pediatric computed tomography (CT) diagnostic reference levels (DRLs) by collecting radiation dose data for the most commonly performed CT examinations. This work was performed for thirty CT scanners installed in various parts of the Tamil Nadu region. The patient cohort was divided into two age groups: <1 year, and 1–5 years. CT dose indices were measured using a 10 cm(3) pencil ion chamber with pediatric head and body polymethyl methacrylate phantoms. Dose data such as volumetric CT dose index (CTDI(v)) and dose length product (DLP) on a minimum of twenty average-sized pediatric patients in each category were recorded to calculate a mean site CTDI(v) and DLP value. The rounded 75(th) percentile was used to calculate a pediatric DRL for each hospital, and then region by compiling all results. Data were collected for 3600 pediatric patients. Pediatric CT DRL for two age groups: <1 year (CTDI(v) and DLP of head [20 mGy, 352 mGy.cm], chest [7 mGy, 120 mGy.cm] and abdomen [12 mGy, 252 mGy.cm]), and 1–5 years (CTDI(v) and DLP of head [38 mGy, 505 mGy.cm], chest [8 mGy, 132 mGy.cm] and abdomen [14 mGy, 270 mGy.cm]) for select procedures have been calculated. Proposed pediatric DRLs of CTDI(v) and DLP for head procedure were lower, and for chest and abdomen procedures were higher than European pediatric DRLs for both age groups.
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spelling pubmed-53703382017-04-12 Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu Saravanakumar, A. Vaideki, K. Govindarajan, K. N. Jayakumar, S. Devanand, B. J Med Phys Technical Note The aim of this article is to assess Tamil Nadu pediatric computed tomography (CT) diagnostic reference levels (DRLs) by collecting radiation dose data for the most commonly performed CT examinations. This work was performed for thirty CT scanners installed in various parts of the Tamil Nadu region. The patient cohort was divided into two age groups: <1 year, and 1–5 years. CT dose indices were measured using a 10 cm(3) pencil ion chamber with pediatric head and body polymethyl methacrylate phantoms. Dose data such as volumetric CT dose index (CTDI(v)) and dose length product (DLP) on a minimum of twenty average-sized pediatric patients in each category were recorded to calculate a mean site CTDI(v) and DLP value. The rounded 75(th) percentile was used to calculate a pediatric DRL for each hospital, and then region by compiling all results. Data were collected for 3600 pediatric patients. Pediatric CT DRL for two age groups: <1 year (CTDI(v) and DLP of head [20 mGy, 352 mGy.cm], chest [7 mGy, 120 mGy.cm] and abdomen [12 mGy, 252 mGy.cm]), and 1–5 years (CTDI(v) and DLP of head [38 mGy, 505 mGy.cm], chest [8 mGy, 132 mGy.cm] and abdomen [14 mGy, 270 mGy.cm]) for select procedures have been calculated. Proposed pediatric DRLs of CTDI(v) and DLP for head procedure were lower, and for chest and abdomen procedures were higher than European pediatric DRLs for both age groups. Medknow Publications & Media Pvt Ltd 2017 /pmc/articles/PMC5370338/ /pubmed/28405108 http://dx.doi.org/10.4103/0971-6203.202425 Text en Copyright: © 2017 Journal of Medical Physics http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
spellingShingle Technical Note
Saravanakumar, A.
Vaideki, K.
Govindarajan, K. N.
Jayakumar, S.
Devanand, B.
Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title_full Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title_fullStr Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title_full_unstemmed Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title_short Assessment of Regional Pediatric Computed Tomography Dose Indices in Tamil Nadu
title_sort assessment of regional pediatric computed tomography dose indices in tamil nadu
topic Technical Note
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5370338/
https://www.ncbi.nlm.nih.gov/pubmed/28405108
http://dx.doi.org/10.4103/0971-6203.202425
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