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Free-breathing 3D cardiac MRI using iterative image-based respiratory motion correction.
Magn Reson Med. 2013 Oct; 70(4):1005-15.MR

Abstract

Respiratory motion compensation using diaphragmatic navigator gating with a 5 mm gating window is conventionally used for free-breathing cardiac MRI. Because of the narrow gating window, scan efficiency is low resulting in long scan times, especially for patients with irregular breathing patterns. In this work, a new retrospective motion compensation algorithm is presented to reduce the scan time for free-breathing cardiac MRI that increasing the gating window to 15 mm without compromising image quality. The proposed algorithm iteratively corrects for respiratory-induced cardiac motion by optimizing the sharpness of the heart. To evaluate this technique, two coronary MRI datasets with 1.3 mm(3) resolution were acquired from 11 healthy subjects (seven females, 25 ± 9 years); one using a navigator with a 5 mm gating window acquired in 12.0 ± 2.0 min and one with a 15 mm gating window acquired in 7.1 ± 1.0 min. The images acquired with a 15 mm gating window were corrected using the proposed algorithm and compared to the uncorrected images acquired with the 5 and 15 mm gating windows. The image quality score, sharpness, and length of the three major coronary arteries were equivalent between the corrected images and the images acquired with a 5 mm gating window (P-value > 0.05), while the scan time was reduced by a factor of 1.7.

Authors+Show Affiliations

Department of Medicine (Cardiovascular Division), Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23132549

Citation

Moghari, Mehdi H., et al. "Free-breathing 3D Cardiac MRI Using Iterative Image-based Respiratory Motion Correction." Magnetic Resonance in Medicine, vol. 70, no. 4, 2013, pp. 1005-15.
Moghari MH, Roujol S, Chan RH, et al. Free-breathing 3D cardiac MRI using iterative image-based respiratory motion correction. Magn Reson Med. 2013;70(4):1005-15.
Moghari, M. H., Roujol, S., Chan, R. H., Hong, S. N., Bello, N., Henningsson, M., Ngo, L. H., Goddu, B., Goepfert, L., Kissinger, K. V., Manning, W. J., & Nezafat, R. (2013). Free-breathing 3D cardiac MRI using iterative image-based respiratory motion correction. Magnetic Resonance in Medicine, 70(4), 1005-15. https://doi.org/10.1002/mrm.24538
Moghari MH, et al. Free-breathing 3D Cardiac MRI Using Iterative Image-based Respiratory Motion Correction. Magn Reson Med. 2013;70(4):1005-15. PubMed PMID: 23132549.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Free-breathing 3D cardiac MRI using iterative image-based respiratory motion correction. AU - Moghari,Mehdi H, AU - Roujol,Sébastien, AU - Chan,Raymond H, AU - Hong,Susie N, AU - Bello,Natalie, AU - Henningsson,Markus, AU - Ngo,Long H, AU - Goddu,Beth, AU - Goepfert,Lois, AU - Kissinger,Kraig V, AU - Manning,Warren J, AU - Nezafat,Reza, Y1 - 2012/11/06/ PY - 2012/03/05/received PY - 2012/09/06/revised PY - 2012/10/01/accepted PY - 2012/11/8/entrez PY - 2012/11/8/pubmed PY - 2014/11/19/medline KW - coronary MRI KW - diaphragmatic navigators KW - respiratory motion KW - retrospective motion correction SP - 1005 EP - 15 JF - Magnetic resonance in medicine JO - Magn Reson Med VL - 70 IS - 4 N2 - Respiratory motion compensation using diaphragmatic navigator gating with a 5 mm gating window is conventionally used for free-breathing cardiac MRI. Because of the narrow gating window, scan efficiency is low resulting in long scan times, especially for patients with irregular breathing patterns. In this work, a new retrospective motion compensation algorithm is presented to reduce the scan time for free-breathing cardiac MRI that increasing the gating window to 15 mm without compromising image quality. The proposed algorithm iteratively corrects for respiratory-induced cardiac motion by optimizing the sharpness of the heart. To evaluate this technique, two coronary MRI datasets with 1.3 mm(3) resolution were acquired from 11 healthy subjects (seven females, 25 ± 9 years); one using a navigator with a 5 mm gating window acquired in 12.0 ± 2.0 min and one with a 15 mm gating window acquired in 7.1 ± 1.0 min. The images acquired with a 15 mm gating window were corrected using the proposed algorithm and compared to the uncorrected images acquired with the 5 and 15 mm gating windows. The image quality score, sharpness, and length of the three major coronary arteries were equivalent between the corrected images and the images acquired with a 5 mm gating window (P-value > 0.05), while the scan time was reduced by a factor of 1.7. SN - 1522-2594 UR - https://www.unboundmedicine.com/medline/citation/23132549/Free_breathing_3D_cardiac_MRI_using_iterative_image_based_respiratory_motion_correction_ L2 - https://doi.org/10.1002/mrm.24538 DB - PRIME DP - Unbound Medicine ER -