Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study

Long acquisition times lead to image artifacts in thoracic C-arm CT. Motion blur caused by respiratory motion leads to decreased image quality in many clinical applications. We introduce an image-based method to estimate and compensate respiratory motion in C-arm CT based on diaphragm motion. In ord...

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Main Authors:	Bögel, Marco, Hofmann, Hannes G., Hornegger, Joachim, Fahrig, Rebecca, Britzen, Stefan, Maier, Andreas
Format:	Online
Language:	English
Published:	Hindawi Publishing Corporation 2013
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690260/

id	pubmed-3690260
recordtype	oai_dc
spelling	pubmed-36902602013-07-09 Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study Bögel, Marco Hofmann, Hannes G. Hornegger, Joachim Fahrig, Rebecca Britzen, Stefan Maier, Andreas Research Article Long acquisition times lead to image artifacts in thoracic C-arm CT. Motion blur caused by respiratory motion leads to decreased image quality in many clinical applications. We introduce an image-based method to estimate and compensate respiratory motion in C-arm CT based on diaphragm motion. In order to estimate respiratory motion, we track the contour of the diaphragm in the projection image sequence. Using a motion corrected triangulation approach on the diaphragm vertex, we are able to estimate a motion signal. The estimated motion signal is used to compensate for respiratory motion in the target region, for example, heart or lungs. First, we evaluated our approach in a simulation study using XCAT. As ground truth data was available, a quantitative evaluation was performed. We observed an improvement of about 14% using the structural similarity index. In a real phantom study, using the artiCHEST phantom, we investigated the visibility of bronchial tubes in a porcine lung. Compared to an uncompensated scan, the visibility of bronchial structures is improved drastically. Preliminary results indicate that this kind of motion compensation can deliver a first step in reconstruction image quality improvement. Compared to ground truth data, image quality is still considerably reduced. Hindawi Publishing Corporation 2013 2013-06-06 /pmc/articles/PMC3690260/ /pubmed/23840198 http://dx.doi.org/10.1155/2013/520540 Text en Copyright © 2013 Marco Bögel et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Bögel, Marco Hofmann, Hannes G. Hornegger, Joachim Fahrig, Rebecca Britzen, Stefan Maier, Andreas
spellingShingle	Bögel, Marco Hofmann, Hannes G. Hornegger, Joachim Fahrig, Rebecca Britzen, Stefan Maier, Andreas Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
author_facet	Bögel, Marco Hofmann, Hannes G. Hornegger, Joachim Fahrig, Rebecca Britzen, Stefan Maier, Andreas
author_sort	Bögel, Marco
title	Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
title_short	Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
title_full	Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
title_fullStr	Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
title_full_unstemmed	Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study
title_sort	respiratory motion compensation using diaphragm tracking for cone-beam c-arm ct: a simulation and a phantom study
description	Long acquisition times lead to image artifacts in thoracic C-arm CT. Motion blur caused by respiratory motion leads to decreased image quality in many clinical applications. We introduce an image-based method to estimate and compensate respiratory motion in C-arm CT based on diaphragm motion. In order to estimate respiratory motion, we track the contour of the diaphragm in the projection image sequence. Using a motion corrected triangulation approach on the diaphragm vertex, we are able to estimate a motion signal. The estimated motion signal is used to compensate for respiratory motion in the target region, for example, heart or lungs. First, we evaluated our approach in a simulation study using XCAT. As ground truth data was available, a quantitative evaluation was performed. We observed an improvement of about 14% using the structural similarity index. In a real phantom study, using the artiCHEST phantom, we investigated the visibility of bronchial tubes in a porcine lung. Compared to an uncompensated scan, the visibility of bronchial structures is improved drastically. Preliminary results indicate that this kind of motion compensation can deliver a first step in reconstruction image quality improvement. Compared to ground truth data, image quality is still considerably reduced.
publisher	Hindawi Publishing Corporation
publishDate	2013
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690260/
_version_	1611988830684971008

Respiratory Motion Compensation Using Diaphragm Tracking for Cone-Beam C-Arm CT: A Simulation and a Phantom Study

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