title: Free-Breathing 3D Imaging of Right Ventricular Structure and Function Using Respiratory and Cardiac Self-Gated Cine MRI.
abstract: Providing a movie of the beating heart in a single prescribed plane, cine MRI has been widely used in clinical cardiac diagnosis, especially in the left ventricle (LV). Right ventricular (RV) morphology and function are also important for the diagnosis of cardiopulmonary diseases and serve as predictors for the long term outcome. The purpose of this study is to develop a self-gated free-breathing 3D imaging method for RV quantification and to evaluate its performance by comparing it with breath-hold 2D cine imaging in 7 healthy volunteers. Compared with 2D, the 3D RV functional measurements show a reduction of RV end-diastole volume (RVEDV) by 10%, increase of RV end-systole volume (RVESV) by 1.8%, reduction of RV systole volume (RVSV) by 21%, and reduction of RV ejection fraction (RVEF) by 12%. High correlations between the two techniques were found (RVEDV: 0.94; RVESV: 0.85; RVSV: 0.95; and RVEF: 0.89). Compared with 2D, the 3D image quality measurements show a small reduction in blood SNR, myocardium-blood CNR, myocardium contrast, and image sharpness. In conclusion, the proposed self-gated free-breathing 3D cardiac cine imaging technique provides comparable image quality and correlated functional measurements to those acquired with the multiple breath-hold 2D technique in RV.
authors.affiliation: Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Nanshan District, Shenzhen 518055, China ; Beijing City Key Lab of Medical Physics and Engineering, School of Physics, Peking University, 201 Chengfu Road, Haidian District, Beijing 100871, China ; Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Yanchun
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: Division of Cardiology, Department of Medicine, Weill Cornell Medical College, 520 East 70th Street, New York, NY 10065, USA.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Weinsaft
authors.affiliation: Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Pascal
authors.initials: P
authors.lastname: Spincemaille
authors.affiliation: Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Thanh D
authors.initials: TD
authors.lastname: Nguyen
authors.affiliation: Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Martin R
authors.initials: MR
authors.lastname: Prince
authors.affiliation: Beijing City Key Lab of Medical Physics and Engineering, School of Physics, Peking University, 201 Chengfu Road, Haidian District, Beijing 100871, China.
authors.forename: Shanglian
authors.initials: S
authors.lastname: Bao
authors.affiliation: Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Nanshan District, Shenzhen 518055, China.
authors.forename: Yaoqin
authors.initials: Y
authors.lastname: Xie
authors.affiliation: Department of Radiology, Weill Cornell Medical College, 515 East 71th Street, New York, NY 10021, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000328:Adult; D055424:Cardiac-Gated Imaging Techniques / Q000379:methods*; D005260:Female; D006352:Heart Ventricles / Q000033:anatomy & histology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D009038:Motion; D015203:Reproducibility of Results; D015656:Respiratory Mechanics; D055425:Respiratory-Gated Imaging Techniques / Q000379:methods*; D012680:Sensitivity and Specificity; D016278:Ventricular Function, Right / Q000502:physiology*