Cargando…
Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners
This study investigates the dosimetry methodology proposed by the American Association of Physicists in Medicine (AAPM) task group 111 and compares with the computed tomography dose index (CTDI) method and the SEDENTEXCT DI method on one clinical multislice CT and two dental cone beam CT (CBCT) scan...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Society of Photo-Optical Instrumentation Engineers
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5621782/ https://www.ncbi.nlm.nih.gov/pubmed/28983492 http://dx.doi.org/10.1117/1.JMI.4.3.031212 |
_version_ | 1783267802166067200 |
---|---|
author | Li, Celina L. Thakur, Yogesh Ford, Nancy L. |
author_facet | Li, Celina L. Thakur, Yogesh Ford, Nancy L. |
author_sort | Li, Celina L. |
collection | PubMed |
description | This study investigates the dosimetry methodology proposed by the American Association of Physicists in Medicine (AAPM) task group 111 and compares with the computed tomography dose index (CTDI) method and the SEDENTEXCT DI method on one clinical multislice CT and two dental cone beam CT (CBCT) scanners using adult, adolescent, and child head phantoms. Following the AAPM method, the normalized (100 mAs) equilibrium doses ([Formula: see text]) for Toshiba Aquilion One MSCT computed using dose measurements from the central hole of the phantom ([Formula: see text]), the peripheral hole of the phantom, ([Formula: see text]), and by the [Formula: see text] equation ([Formula: see text]) are in the range from 20 to 25 mGy. For i-CAT Next Generation dental CBCT, the normalized [Formula: see text] , [Formula: see text] , [Formula: see text] , and [Formula: see text] by the two SEDENTEXCT DI methods are in the range from 12 to 15 mGy. Fitting the AAPM equation is not possible for the limited scan lengths available on the CS 9300 dental CBCT. This study offers a simple CTDI-like measurement that can approximate the AAPM [Formula: see text] in clinical CBCT scanners capable of providing four or more scan lengths. |
format | Online Article Text |
id | pubmed-5621782 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Society of Photo-Optical Instrumentation Engineers |
record_format | MEDLINE/PubMed |
spelling | pubmed-56217822018-09-29 Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners Li, Celina L. Thakur, Yogesh Ford, Nancy L. J Med Imaging (Bellingham) Special Section on Visions of Safety: Perspectives on Radiation Exposure This study investigates the dosimetry methodology proposed by the American Association of Physicists in Medicine (AAPM) task group 111 and compares with the computed tomography dose index (CTDI) method and the SEDENTEXCT DI method on one clinical multislice CT and two dental cone beam CT (CBCT) scanners using adult, adolescent, and child head phantoms. Following the AAPM method, the normalized (100 mAs) equilibrium doses ([Formula: see text]) for Toshiba Aquilion One MSCT computed using dose measurements from the central hole of the phantom ([Formula: see text]), the peripheral hole of the phantom, ([Formula: see text]), and by the [Formula: see text] equation ([Formula: see text]) are in the range from 20 to 25 mGy. For i-CAT Next Generation dental CBCT, the normalized [Formula: see text] , [Formula: see text] , [Formula: see text] , and [Formula: see text] by the two SEDENTEXCT DI methods are in the range from 12 to 15 mGy. Fitting the AAPM equation is not possible for the limited scan lengths available on the CS 9300 dental CBCT. This study offers a simple CTDI-like measurement that can approximate the AAPM [Formula: see text] in clinical CBCT scanners capable of providing four or more scan lengths. Society of Photo-Optical Instrumentation Engineers 2017-09-29 2017-07 /pmc/articles/PMC5621782/ /pubmed/28983492 http://dx.doi.org/10.1117/1.JMI.4.3.031212 Text en © The Authors. https://creativecommons.org/licenses/by/3.0/ Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. |
spellingShingle | Special Section on Visions of Safety: Perspectives on Radiation Exposure Li, Celina L. Thakur, Yogesh Ford, Nancy L. Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title | Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title_full | Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title_fullStr | Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title_full_unstemmed | Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title_short | Comparison of the CTDI and AAPM report No. 111 methodology in adult, adolescent, and child head phantoms for MSCT and dental CBCT scanners |
title_sort | comparison of the ctdi and aapm report no. 111 methodology in adult, adolescent, and child head phantoms for msct and dental cbct scanners |
topic | Special Section on Visions of Safety: Perspectives on Radiation Exposure |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5621782/ https://www.ncbi.nlm.nih.gov/pubmed/28983492 http://dx.doi.org/10.1117/1.JMI.4.3.031212 |
work_keys_str_mv | AT licelinal comparisonofthectdiandaapmreportno111methodologyinadultadolescentandchildheadphantomsformsctanddentalcbctscanners AT thakuryogesh comparisonofthectdiandaapmreportno111methodologyinadultadolescentandchildheadphantomsformsctanddentalcbctscanners AT fordnancyl comparisonofthectdiandaapmreportno111methodologyinadultadolescentandchildheadphantomsformsctanddentalcbctscanners |