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Retrospective reconstruction of high temporal resolution cine images from real-time MRI using iterative motion correction.
Magn Reson Med. 2012 Sep; 68(3):741-50.MR

Abstract

Cardiac function has traditionally been evaluated using breath-hold cine acquisitions. However, there is a great need for free breathing techniques in patients who have difficulty in holding their breath. Real-time cardiac MRI is a valuable alternative to the traditional breath-hold imaging approach, but the real-time images are often inferior in spatial and temporal resolution. This article presents a general method for reconstruction of high spatial and temporal resolution cine images from a real-time acquisition acquired over multiple cardiac cycles. The method combines parallel imaging and motion correction based on nonrigid registration and can be applied to arbitrary k-space trajectories. The method is demonstrated with real-time Cartesian imaging and Golden Angle radial acquisitions, and the motion-corrected acquisitions are compared with raw real-time images and breath-hold cine acquisitions in 10 (N = 10) subjects. Acceptable image quality was obtained in all motion-corrected reconstructions, and the resulting mean image quality score was (a) Cartesian real-time: 2.48, (b) Golden Angle real-time: 1.90 (1.00-2.50), (c) Cartesian motion correction: 3.92, (d) Radial motion correction: 4.58, and (e) Breath-hold cine: 5.00. The proposed method provides a flexible way to obtain high-quality, high-resolution cine images in patients with difficulty holding their breath.

Authors+Show Affiliations

National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA. michael.hansen@nih.govNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, N.I.H., Intramural

Language

eng

PubMed ID

22190255

Citation

Hansen, Michael S., et al. "Retrospective Reconstruction of High Temporal Resolution Cine Images From Real-time MRI Using Iterative Motion Correction." Magnetic Resonance in Medicine, vol. 68, no. 3, 2012, pp. 741-50.
Hansen MS, Sørensen TS, Arai AE, et al. Retrospective reconstruction of high temporal resolution cine images from real-time MRI using iterative motion correction. Magn Reson Med. 2012;68(3):741-50.
Hansen, M. S., Sørensen, T. S., Arai, A. E., & Kellman, P. (2012). Retrospective reconstruction of high temporal resolution cine images from real-time MRI using iterative motion correction. Magnetic Resonance in Medicine, 68(3), 741-50. https://doi.org/10.1002/mrm.23284
Hansen MS, et al. Retrospective Reconstruction of High Temporal Resolution Cine Images From Real-time MRI Using Iterative Motion Correction. Magn Reson Med. 2012;68(3):741-50. PubMed PMID: 22190255.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Retrospective reconstruction of high temporal resolution cine images from real-time MRI using iterative motion correction. AU - Hansen,Michael S, AU - Sørensen,Thomas S, AU - Arai,Andrew E, AU - Kellman,Peter, Y1 - 2011/12/21/ PY - 2011/08/02/received PY - 2011/09/20/revised PY - 2011/10/16/accepted PY - 2011/12/23/entrez PY - 2011/12/23/pubmed PY - 2013/1/26/medline SP - 741 EP - 50 JF - Magnetic resonance in medicine JO - Magn Reson Med VL - 68 IS - 3 N2 - Cardiac function has traditionally been evaluated using breath-hold cine acquisitions. However, there is a great need for free breathing techniques in patients who have difficulty in holding their breath. Real-time cardiac MRI is a valuable alternative to the traditional breath-hold imaging approach, but the real-time images are often inferior in spatial and temporal resolution. This article presents a general method for reconstruction of high spatial and temporal resolution cine images from a real-time acquisition acquired over multiple cardiac cycles. The method combines parallel imaging and motion correction based on nonrigid registration and can be applied to arbitrary k-space trajectories. The method is demonstrated with real-time Cartesian imaging and Golden Angle radial acquisitions, and the motion-corrected acquisitions are compared with raw real-time images and breath-hold cine acquisitions in 10 (N = 10) subjects. Acceptable image quality was obtained in all motion-corrected reconstructions, and the resulting mean image quality score was (a) Cartesian real-time: 2.48, (b) Golden Angle real-time: 1.90 (1.00-2.50), (c) Cartesian motion correction: 3.92, (d) Radial motion correction: 4.58, and (e) Breath-hold cine: 5.00. The proposed method provides a flexible way to obtain high-quality, high-resolution cine images in patients with difficulty holding their breath. SN - 1522-2594 UR - https://www.unboundmedicine.com/medline/citation/22190255/Retrospective_reconstruction_of_high_temporal_resolution_cine_images_from_real_time_MRI_using_iterative_motion_correction_ L2 - https://doi.org/10.1002/mrm.23284 DB - PRIME DP - Unbound Medicine ER -