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Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions
In a general scenario, the brain images acquired from magnetic resonance imaging (MRI) may experience tilt, distorting brain MR images. The tilt experienced by the brain MR images may result in misalignment during image registration for medical applications. Manually correcting (or estimating) the t...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8329139/ https://www.ncbi.nlm.nih.gov/pubmed/33629240 http://dx.doi.org/10.1007/s10278-020-00400-7 |
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author | Prabhu, Pooja Karunakar, A. K. Sinha, Sanjib Mariyappa, N. Bhargava, G. K. Velmurugan, J. Anitha, H. |
author_facet | Prabhu, Pooja Karunakar, A. K. Sinha, Sanjib Mariyappa, N. Bhargava, G. K. Velmurugan, J. Anitha, H. |
author_sort | Prabhu, Pooja |
collection | PubMed |
description | In a general scenario, the brain images acquired from magnetic resonance imaging (MRI) may experience tilt, distorting brain MR images. The tilt experienced by the brain MR images may result in misalignment during image registration for medical applications. Manually correcting (or estimating) the tilt on a large scale is time-consuming, expensive, and needs brain anatomy expertise. Thus, there is a need for an automatic way of performing tilt correction in three orthogonal directions (X, Y, Z). The proposed work aims to correct the tilt automatically by measuring the pitch angle, yaw angle, and roll angle in X-axis, Z-axis, and Y-axis, respectively. For correction of the tilt around the Z-axis (pointing to the superior direction), image processing techniques, principal component analysis, and similarity measures are used. Also, for correction of the tilt around the X-axis (pointing to the right direction), morphological operations, and tilt correction around the Y-axis (pointing to the anterior direction), orthogonal regression is used. The proposed approach was applied to adjust the tilt observed in the T1- and T2-weighted MR images. The simulation study with the proposed algorithm yielded an error of 0.40 ± 0.09°, and it outperformed the other existing studies. The tilt angle (in degrees) obtained is ranged from 6.2 ± 3.94, 2.35 ± 2.61, and 5 ± 4.36 in X-, Z-, and Y-directions, respectively, by using the proposed algorithm. The proposed work corrects the tilt more accurately and robustly when compared with existing studies. |
format | Online Article Text |
id | pubmed-8329139 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-83291392021-08-20 Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions Prabhu, Pooja Karunakar, A. K. Sinha, Sanjib Mariyappa, N. Bhargava, G. K. Velmurugan, J. Anitha, H. J Digit Imaging Article In a general scenario, the brain images acquired from magnetic resonance imaging (MRI) may experience tilt, distorting brain MR images. The tilt experienced by the brain MR images may result in misalignment during image registration for medical applications. Manually correcting (or estimating) the tilt on a large scale is time-consuming, expensive, and needs brain anatomy expertise. Thus, there is a need for an automatic way of performing tilt correction in three orthogonal directions (X, Y, Z). The proposed work aims to correct the tilt automatically by measuring the pitch angle, yaw angle, and roll angle in X-axis, Z-axis, and Y-axis, respectively. For correction of the tilt around the Z-axis (pointing to the superior direction), image processing techniques, principal component analysis, and similarity measures are used. Also, for correction of the tilt around the X-axis (pointing to the right direction), morphological operations, and tilt correction around the Y-axis (pointing to the anterior direction), orthogonal regression is used. The proposed approach was applied to adjust the tilt observed in the T1- and T2-weighted MR images. The simulation study with the proposed algorithm yielded an error of 0.40 ± 0.09°, and it outperformed the other existing studies. The tilt angle (in degrees) obtained is ranged from 6.2 ± 3.94, 2.35 ± 2.61, and 5 ± 4.36 in X-, Z-, and Y-directions, respectively, by using the proposed algorithm. The proposed work corrects the tilt more accurately and robustly when compared with existing studies. Springer International Publishing 2021-02-24 2021-06 /pmc/articles/PMC8329139/ /pubmed/33629240 http://dx.doi.org/10.1007/s10278-020-00400-7 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Prabhu, Pooja Karunakar, A. K. Sinha, Sanjib Mariyappa, N. Bhargava, G. K. Velmurugan, J. Anitha, H. Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title | Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title_full | Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title_fullStr | Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title_full_unstemmed | Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title_short | Content-Based Estimation of Brain MRI Tilt in Three Orthogonal Directions |
title_sort | content-based estimation of brain mri tilt in three orthogonal directions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8329139/ https://www.ncbi.nlm.nih.gov/pubmed/33629240 http://dx.doi.org/10.1007/s10278-020-00400-7 |
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