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Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT
BACKGROUND: Model-based iterative reconstruction (MBIR) reduces image noise and improves image quality (IQ) but its influence on post-processing tools including maximal intensity projection (MIP) and minimal intensity projection (mIP) remains unknown. PURPOSE: To evaluate the influence on IQ of MBIR...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012508/ https://www.ncbi.nlm.nih.gov/pubmed/27635253 http://dx.doi.org/10.1177/2058460116662299 |
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author | Barras, Heloise Dunet, Vincent Hachulla, Anne-Lise Grimm, Jochen Beigelman-Aubry, Catherine |
author_facet | Barras, Heloise Dunet, Vincent Hachulla, Anne-Lise Grimm, Jochen Beigelman-Aubry, Catherine |
author_sort | Barras, Heloise |
collection | PubMed |
description | BACKGROUND: Model-based iterative reconstruction (MBIR) reduces image noise and improves image quality (IQ) but its influence on post-processing tools including maximal intensity projection (MIP) and minimal intensity projection (mIP) remains unknown. PURPOSE: To evaluate the influence on IQ of MBIR on native, mIP, MIP axial and coronal reformats of reduced dose computed tomography (RD-CT) chest acquisition. MATERIAL AND METHODS: Raw data of 50 patients, who underwent a standard dose CT (SD-CT) and a follow-up RD-CT with a CT dose index (CTDI) of 2–3 mGy, were reconstructed by MBIR and FBP. Native slices, 4-mm-thick MIP, and 3-mm-thick mIP axial and coronal reformats were generated. The relative IQ, subjective IQ, image noise, and number of artifacts were determined in order to compare different reconstructions of RD-CT with reference SD-CT. RESULTS: The lowest noise was observed with MBIR. RD-CT reconstructed by MBIR exhibited the best relative and subjective IQ on coronal view regardless of the post-processing tool. MBIR generated the lowest rate of artefacts on coronal mIP/MIP reformats and the highest one on axial reformats, mainly represented by distortions and stairsteps artifacts. CONCLUSION: The MBIR algorithm reduces image noise but generates more artifacts than FBP on axial mIP and MIP reformats of RD-CT. Conversely, it significantly improves IQ on coronal views, without increasing artifacts, regardless of the post-processing technique. |
format | Online Article Text |
id | pubmed-5012508 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-50125082016-09-15 Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT Barras, Heloise Dunet, Vincent Hachulla, Anne-Lise Grimm, Jochen Beigelman-Aubry, Catherine Acta Radiol Open Research BACKGROUND: Model-based iterative reconstruction (MBIR) reduces image noise and improves image quality (IQ) but its influence on post-processing tools including maximal intensity projection (MIP) and minimal intensity projection (mIP) remains unknown. PURPOSE: To evaluate the influence on IQ of MBIR on native, mIP, MIP axial and coronal reformats of reduced dose computed tomography (RD-CT) chest acquisition. MATERIAL AND METHODS: Raw data of 50 patients, who underwent a standard dose CT (SD-CT) and a follow-up RD-CT with a CT dose index (CTDI) of 2–3 mGy, were reconstructed by MBIR and FBP. Native slices, 4-mm-thick MIP, and 3-mm-thick mIP axial and coronal reformats were generated. The relative IQ, subjective IQ, image noise, and number of artifacts were determined in order to compare different reconstructions of RD-CT with reference SD-CT. RESULTS: The lowest noise was observed with MBIR. RD-CT reconstructed by MBIR exhibited the best relative and subjective IQ on coronal view regardless of the post-processing tool. MBIR generated the lowest rate of artefacts on coronal mIP/MIP reformats and the highest one on axial reformats, mainly represented by distortions and stairsteps artifacts. CONCLUSION: The MBIR algorithm reduces image noise but generates more artifacts than FBP on axial mIP and MIP reformats of RD-CT. Conversely, it significantly improves IQ on coronal views, without increasing artifacts, regardless of the post-processing technique. SAGE Publications 2016-08-24 /pmc/articles/PMC5012508/ /pubmed/27635253 http://dx.doi.org/10.1177/2058460116662299 Text en © The Foundation Acta Radiologica 2016 http://creativecommons.org/licenses/by-nc/3.0/ This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page(https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Research Barras, Heloise Dunet, Vincent Hachulla, Anne-Lise Grimm, Jochen Beigelman-Aubry, Catherine Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title | Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title_full | Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title_fullStr | Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title_full_unstemmed | Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title_short | Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT |
title_sort | influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest ct |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012508/ https://www.ncbi.nlm.nih.gov/pubmed/27635253 http://dx.doi.org/10.1177/2058460116662299 |
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