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Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms

BACKGROUND: When using an anti‐scatter grid, a decrease in receptor dose caused by its X‐ray absorption seems to lead to the misperception that radiation dose needs to be increased even in digital radiography (DR). OBJECTIVE: To demonstrate that there is no need to increase radiation dose in DR with...

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Autores principales: Kawashima, Hiroki, Ichikawa, Katsuhiro, Kitao, Azusa, Matsubara, Takashi, Sugiura, Takumi, Kobayashi, Tomohiro, Kobayashi, Satoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10476983/
https://www.ncbi.nlm.nih.gov/pubmed/37491809
http://dx.doi.org/10.1002/acm2.14081
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author Kawashima, Hiroki
Ichikawa, Katsuhiro
Kitao, Azusa
Matsubara, Takashi
Sugiura, Takumi
Kobayashi, Tomohiro
Kobayashi, Satoshi
author_facet Kawashima, Hiroki
Ichikawa, Katsuhiro
Kitao, Azusa
Matsubara, Takashi
Sugiura, Takumi
Kobayashi, Tomohiro
Kobayashi, Satoshi
author_sort Kawashima, Hiroki
collection PubMed
description BACKGROUND: When using an anti‐scatter grid, a decrease in receptor dose caused by its X‐ray absorption seems to lead to the misperception that radiation dose needs to be increased even in digital radiography (DR). OBJECTIVE: To demonstrate that there is no need to increase radiation dose in DR with a grid, based on a visual evaluation using an adult and a pediatric abdomen phantom (P(AD) and P(PD), respectively). MATERIALS AND METHODS: Phantom images with and without a grid were obtained with exposure parameters determined based on a preliminarily measured signal‐to‐noise ratio improvement factor (SIF), an index for potential dose reduction when using a grid. In visual evaluation, four radiologists compared phantom images with a grid applied at different dose reduction rates (0% [no reduction], 18%, 36%, and 59% for P(AD) and 0% and 11% for P(PD)) against an image without a grid at the baseline dose (as the reference). They graded the overall image quality of the former relative to that of the latter (reference) on a 3‐point scale (3 = better, 2 = almost equal, 1 = worse). RESULTS: The mean scores for dose reduction rates of 0%, 18%, 36%, and 59% were 3.00, 3.00, 2.75, and 1.00, respectively, for P(AD); those for 0% and 11% were 2.13 and 1.63, respectively, for P(PD). These results support the validity of our view that no dose increase is necessary when using an anti‐scatter grid. Actually, there is even a potential for improvement in image quality with dose reduction rates of ≤36% for P(AD). CONCLUSION: It is worth reconsidering the necessity of increasing radiation dose in the DR imaging of the adult and pediatric abdomens with an anti‐scatter grid.
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spelling pubmed-104769832023-09-05 Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms Kawashima, Hiroki Ichikawa, Katsuhiro Kitao, Azusa Matsubara, Takashi Sugiura, Takumi Kobayashi, Tomohiro Kobayashi, Satoshi J Appl Clin Med Phys Technical Notes BACKGROUND: When using an anti‐scatter grid, a decrease in receptor dose caused by its X‐ray absorption seems to lead to the misperception that radiation dose needs to be increased even in digital radiography (DR). OBJECTIVE: To demonstrate that there is no need to increase radiation dose in DR with a grid, based on a visual evaluation using an adult and a pediatric abdomen phantom (P(AD) and P(PD), respectively). MATERIALS AND METHODS: Phantom images with and without a grid were obtained with exposure parameters determined based on a preliminarily measured signal‐to‐noise ratio improvement factor (SIF), an index for potential dose reduction when using a grid. In visual evaluation, four radiologists compared phantom images with a grid applied at different dose reduction rates (0% [no reduction], 18%, 36%, and 59% for P(AD) and 0% and 11% for P(PD)) against an image without a grid at the baseline dose (as the reference). They graded the overall image quality of the former relative to that of the latter (reference) on a 3‐point scale (3 = better, 2 = almost equal, 1 = worse). RESULTS: The mean scores for dose reduction rates of 0%, 18%, 36%, and 59% were 3.00, 3.00, 2.75, and 1.00, respectively, for P(AD); those for 0% and 11% were 2.13 and 1.63, respectively, for P(PD). These results support the validity of our view that no dose increase is necessary when using an anti‐scatter grid. Actually, there is even a potential for improvement in image quality with dose reduction rates of ≤36% for P(AD). CONCLUSION: It is worth reconsidering the necessity of increasing radiation dose in the DR imaging of the adult and pediatric abdomens with an anti‐scatter grid. John Wiley and Sons Inc. 2023-07-25 /pmc/articles/PMC10476983/ /pubmed/37491809 http://dx.doi.org/10.1002/acm2.14081 Text en © 2023 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, LLC on behalf of The American Association of Physicists in Medicine. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Technical Notes
Kawashima, Hiroki
Ichikawa, Katsuhiro
Kitao, Azusa
Matsubara, Takashi
Sugiura, Takumi
Kobayashi, Tomohiro
Kobayashi, Satoshi
Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title_full Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title_fullStr Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title_full_unstemmed Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title_short Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
title_sort radiation dose considerations in digital radiography with an anti‐scatter grid: a study using adult and pediatric phantoms
topic Technical Notes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10476983/
https://www.ncbi.nlm.nih.gov/pubmed/37491809
http://dx.doi.org/10.1002/acm2.14081
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