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Usefulness of non–contrast‐enhanced MRI with two‐dimensional balanced steady‐state free precession for the acquisition of the pulmonary venous and left atrial anatomy pre catheter ablation of atrial fibrillation: Comparison with contrast enhanced CT in clinical cases
Author(s) -
Shigenaga Yutaka,
Okajima Katsunori,
Ikeuchi Kazushi,
Kiuchi Kunihiko,
Ikeda Takayuki,
Shimane Akira,
Yokoi Kiminobu,
Teranishi Jin,
Aoki Kousuke,
Chimura Misato,
Yamada Shinichiro,
Taniguchi Yasuyo,
Yasaka Yoshinori,
Kawai Hiroya
Publication year - 2016
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.24990
Subject(s) - steady state free precession imaging , medicine , atrial fibrillation , ablation , nuclear medicine , catheter ablation , contrast (vision) , radiology , magnetic resonance imaging , cardiology , physics , optics
Background To investigate the feasibility of substituting non–contrast‐enhanced MR (non–CE‐MR) imaging with a two‐dimensional (2D) balanced steady‐state free precession (b‐SSFP) sequence for contrast‐enhanced computed tomography (CE‐CT) for atrial fibrillation (AF) ablation. Methods Fifty‐four patients that underwent AF ablation under the guidance of a 3D electro‐anatomical mapping system with CE‐CT (n = 27) or non–CE‐MR images (n = 27) were studied. Procedural results were compared between the two groups. Furthermore, in 22 patients who underwent both CE‐CT and non–CE‐MRI, two cardiologists independently scored the multiplanar reformatted images on a scale of 1 to 4 (from 1, poor, to 4, excellent). Results The image score was nearly 0.5 point higher with the CE‐CT method. However, the procedural results such as the surface registration error (1.0 [0.8–1.6] mm versus 1.0 [0.8–1.35] mm, P = 0.88) and procedure time (185 [159–199] min versus 185 [142–221] min, P = 0.86) did not significantly differ between the CE‐CT and non–CE‐MR groups. Conclusion The non–CE‐MR method with a 2D‐b‐SSFP sequence can give us adequate information on AF ablation without any radiation exposure or contrast medium usage. J. Magn. Reson. Imaging 2016;43:495–503.