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A paediatric X-ray exposure chart
The aim of this review was to develop a radiographic optimisation strategy to make use of digital radiography (DR) and needle phosphor computerised radiography (CR) detectors, in order to lower radiation dose and improve image quality for paediatrics. This review was based on evidence-based practice...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BlackWell Publishing Ltd
2014
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4175850/ https://www.ncbi.nlm.nih.gov/pubmed/26229655 http://dx.doi.org/10.1002/jmrs.56 |
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author | Knight, Stephen P |
author_facet | Knight, Stephen P |
author_sort | Knight, Stephen P |
collection | PubMed |
description | The aim of this review was to develop a radiographic optimisation strategy to make use of digital radiography (DR) and needle phosphor computerised radiography (CR) detectors, in order to lower radiation dose and improve image quality for paediatrics. This review was based on evidence-based practice, of which a component was a review of the relevant literature. The resulting exposure chart was developed with two distinct groups of exposure optimisation strategies – body exposures (for head, trunk, humerus, femur) and distal extremity exposures (elbow to finger, knee to toe). Exposure variables manipulated included kilovoltage peak (kVp), target detector exposure and milli-ampere-seconds (mAs), automatic exposure control (AEC), additional beam filtration, and use of antiscatter grid. Mean dose area product (DAP) reductions of up to 83% for anterior–posterior (AP)/posterior–anterior (PA) abdomen projections were recorded postoptimisation due to manipulation of multiple-exposure variables. For body exposures, the target EI and detector exposure, and thus the required mAs were typically 20% less postoptimisation. Image quality for some distal extremity exposures was improved by lowering kVp and increasing mAs around constant entrance skin dose. It is recommended that purchasing digital X-ray equipment with high detective quantum efficiency detectors, and then optimising the exposure chart for use with these detectors is of high importance for sites performing paediatric imaging. Multiple-exposure variables may need to be manipulated to achieve optimal outcomes. |
format | Online Article Text |
id | pubmed-4175850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BlackWell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-41758502014-09-30 A paediatric X-ray exposure chart Knight, Stephen P J Med Radiat Sci Review Articles The aim of this review was to develop a radiographic optimisation strategy to make use of digital radiography (DR) and needle phosphor computerised radiography (CR) detectors, in order to lower radiation dose and improve image quality for paediatrics. This review was based on evidence-based practice, of which a component was a review of the relevant literature. The resulting exposure chart was developed with two distinct groups of exposure optimisation strategies – body exposures (for head, trunk, humerus, femur) and distal extremity exposures (elbow to finger, knee to toe). Exposure variables manipulated included kilovoltage peak (kVp), target detector exposure and milli-ampere-seconds (mAs), automatic exposure control (AEC), additional beam filtration, and use of antiscatter grid. Mean dose area product (DAP) reductions of up to 83% for anterior–posterior (AP)/posterior–anterior (PA) abdomen projections were recorded postoptimisation due to manipulation of multiple-exposure variables. For body exposures, the target EI and detector exposure, and thus the required mAs were typically 20% less postoptimisation. Image quality for some distal extremity exposures was improved by lowering kVp and increasing mAs around constant entrance skin dose. It is recommended that purchasing digital X-ray equipment with high detective quantum efficiency detectors, and then optimising the exposure chart for use with these detectors is of high importance for sites performing paediatric imaging. Multiple-exposure variables may need to be manipulated to achieve optimal outcomes. BlackWell Publishing Ltd 2014-09 2014-06-09 /pmc/articles/PMC4175850/ /pubmed/26229655 http://dx.doi.org/10.1002/jmrs.56 Text en © 2014 The Author. Journal of Medical Radiation Sciences published by Wiley Publishing Asia Pty Ltd on behalf of Australian Institute of Radiography and New Zealand Institute of Medical Radiation Technology http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
spellingShingle | Review Articles Knight, Stephen P A paediatric X-ray exposure chart |
title | A paediatric X-ray exposure chart |
title_full | A paediatric X-ray exposure chart |
title_fullStr | A paediatric X-ray exposure chart |
title_full_unstemmed | A paediatric X-ray exposure chart |
title_short | A paediatric X-ray exposure chart |
title_sort | paediatric x-ray exposure chart |
topic | Review Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4175850/ https://www.ncbi.nlm.nih.gov/pubmed/26229655 http://dx.doi.org/10.1002/jmrs.56 |
work_keys_str_mv | AT knightstephenp apaediatricxrayexposurechart AT knightstephenp paediatricxrayexposurechart |