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Free-breathing steady-state free precession cine cardiac magnetic resonance with respiratory navigator gating.
Magn Reson Med. 2015 Apr; 73(4):1555-61.MR

Abstract

PURPOSE

To develop and validate a respiratory motion compensation method for free-breathing cardiac cine imaging.

METHODS

A free-breathing navigator-gated cine steady-state free precession acquisition (Cine-Nav) was developed which preserves the equilibrium state of the net magnetization vector, maintains the high spatial and temporal resolutions of standard breath-hold (BH) acquisition, and images entire cardiac cycle. Cine image data is accepted only from cardiac cycles occurring entirely during end-expiration. Prospective validation was performed in 10 patients by obtaining in each three complete ventricular image stacks with different respiratory motion compensation approaches: (1) BH, (2) free-breathing with 3 signal averages (3AVG), and (3) free-breathing with Cine-Nav.

RESULTS

The subjective image quality score (1 = worst, 4 = best) for Cine-Nav (3.8 ± 0.4) was significantly better than for 3AVG (2.2 ± 0.5, P = 0.002), and similar to BH (4.0 ± 0.0, P = 0.13). The blood-to-myocardium contrast ratio for Cine-Nav (6.3 ± 1.5) was similar to BH (5.9 ± 1.6, P = 0.52) and to 3AVG (5.6 ± 2.5, P = 0.43). There were no significant differences between Cine-Nav and BH for the ventricular volumes and mass. In contrast, there were significant differences between 3AVG and BH in all of these measurements but right ventricular mass.

CONCLUSION

Free-breathing cine imaging with Cine-Nav yielded comparable image quality and ventricular measurements to BH, and was superior to 3AVG.

Authors+Show Affiliations

Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA; Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24777586

Citation

Moghari, Mehdi H., et al. "Free-breathing Steady-state Free Precession Cine Cardiac Magnetic Resonance With Respiratory Navigator Gating." Magnetic Resonance in Medicine, vol. 73, no. 4, 2015, pp. 1555-61.
Moghari MH, Komarlu R, Annese D, et al. Free-breathing steady-state free precession cine cardiac magnetic resonance with respiratory navigator gating. Magn Reson Med. 2015;73(4):1555-61.
Moghari, M. H., Komarlu, R., Annese, D., Geva, T., & Powell, A. J. (2015). Free-breathing steady-state free precession cine cardiac magnetic resonance with respiratory navigator gating. Magnetic Resonance in Medicine, 73(4), 1555-61. https://doi.org/10.1002/mrm.25275
Moghari MH, et al. Free-breathing Steady-state Free Precession Cine Cardiac Magnetic Resonance With Respiratory Navigator Gating. Magn Reson Med. 2015;73(4):1555-61. PubMed PMID: 24777586.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Free-breathing steady-state free precession cine cardiac magnetic resonance with respiratory navigator gating. AU - Moghari,Mehdi H, AU - Komarlu,Rukmini, AU - Annese,David, AU - Geva,Tal, AU - Powell,Andrew J, Y1 - 2014/04/28/ PY - 2014/01/22/received PY - 2014/04/09/revised PY - 2014/04/10/accepted PY - 2014/4/30/entrez PY - 2014/4/30/pubmed PY - 2015/12/15/medline KW - cardiac magnetic resonance KW - cine magnetic resonance KW - free-breathing KW - navigator gating KW - respiratory motion correction KW - ventricular function SP - 1555 EP - 61 JF - Magnetic resonance in medicine JO - Magn Reson Med VL - 73 IS - 4 N2 - PURPOSE: To develop and validate a respiratory motion compensation method for free-breathing cardiac cine imaging. METHODS: A free-breathing navigator-gated cine steady-state free precession acquisition (Cine-Nav) was developed which preserves the equilibrium state of the net magnetization vector, maintains the high spatial and temporal resolutions of standard breath-hold (BH) acquisition, and images entire cardiac cycle. Cine image data is accepted only from cardiac cycles occurring entirely during end-expiration. Prospective validation was performed in 10 patients by obtaining in each three complete ventricular image stacks with different respiratory motion compensation approaches: (1) BH, (2) free-breathing with 3 signal averages (3AVG), and (3) free-breathing with Cine-Nav. RESULTS: The subjective image quality score (1 = worst, 4 = best) for Cine-Nav (3.8 ± 0.4) was significantly better than for 3AVG (2.2 ± 0.5, P = 0.002), and similar to BH (4.0 ± 0.0, P = 0.13). The blood-to-myocardium contrast ratio for Cine-Nav (6.3 ± 1.5) was similar to BH (5.9 ± 1.6, P = 0.52) and to 3AVG (5.6 ± 2.5, P = 0.43). There were no significant differences between Cine-Nav and BH for the ventricular volumes and mass. In contrast, there were significant differences between 3AVG and BH in all of these measurements but right ventricular mass. CONCLUSION: Free-breathing cine imaging with Cine-Nav yielded comparable image quality and ventricular measurements to BH, and was superior to 3AVG. SN - 1522-2594 UR - https://www.unboundmedicine.com/medline/citation/24777586/Free_breathing_steady_state_free_precession_cine_cardiac_magnetic_resonance_with_respiratory_navigator_gating_ L2 - https://doi.org/10.1002/mrm.25275 DB - PRIME DP - Unbound Medicine ER -