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Assessment of left ventricular myocardial scar in coronary artery disease by a three‐dimensional MR imaging technique
Author(s) -
Yin Gang,
Zhao Shihua,
Lu Minjie,
Ma Ning,
Zuehlsdorff Sven,
Cheng Huaibing,
Jiang Shiliang,
Zhao Tao,
Zhang Yan,
An Jing,
Lv Chuanjian,
He Zuoxiang
Publication year - 2013
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.23962
Subject(s) - medicine , coronary artery disease , magnetic resonance imaging , image quality , nuclear medicine , radiology , cardiology , image (mathematics) , artificial intelligence , computer science
Purpose To evaluate the feasibility of free‐breathing three‐dimensional (3D) phase sensitive inversion recovery (PSIR) Turbo FLASH late gadolinium enhancement (LGE) magnetic resonance images (MRI) on left ventricular scar in patients with coronary artery disease (CAD) compared with clinically established breathhold two‐dimensional (2D) PSIR Turbo FLASH images. Materials and Methods In 58 consecutive patients with confirmed CAD, LGE MRI using the two sequences have been acquired. Image quality was graded on a four‐point scale according to the image appearance. Qualitative evaluation including the distribution area and the transmural extent of the scar based on the American Heart Association's (AHA's) 17‐segment model was performed in both of 2D and 3D images. The scar volumes were compared quantitatively between 2D and 3D images. Results A total of 51 individuals were used for final statistical analysis. No differences were noted in image quality ( P = 0.80), scar distribution area ( P = 0.17), and scar transmural extent ( P = 0.20) between 3D and 2D images. There was strong correlation in scar volume between the 3D and 2D results (r = 0.940; P < 0.001; Y = 0.298 + 1.251X, R 2 = 0.876). But the scar volume derived from 3D images was significantly larger than that derived from 2D images (2D versus 3D, 20.08 ± 9.41 cm 3 versus 25.41 ± 12.57 cm 3 , t = −7.60; P < 0.001). The trend toward a larger scar volume identified by 3D method was indicated through Bland‐Altman analysis. Conclusion Free‐breathing 3D PSIR Turbo FLASH imaging is another feasible method to identify left ventricular myocardial scar in patients with CAD and detects more scar volume compared with breathhold 2D PSIR Turbo FLASH imaging. J. Magn. Reson. Imaging 2013;38:72–79. © 2012 Wiley Periodicals, Inc.