title: Dual gradient-echo in-phase and opposed-phase magnetic resonance imaging to evaluate lipomatous metaplasia in patients with old myocardial infarction.
abstract: We present an alternative method for evaluating cardiac fat tissue-dual gradient-echo in-phase and opposed-phase magnetic resonance imaging (IPOP-MRI) with electrocardiographic (ECG) gating. Conventional IPOP-MRI can be used to evaluate small amounts of fat and is widely used for abdominal imaging, but cardiac motion artifacts make its use difficult for cardiac imaging. Using ECG gating prior to IPOP-MRI, we evaluated lipomatous metaplasia after myocardial infarction. The areas of lipomatous metaplasia measured by IPOP-MRI with ECG gating correlated well with those areas on black-blood T(1)-weighted imaging (r=0.82, P<0.0001, mean bias-0.29 cm(2), limit of agreement+/-2.06 cm(2)).
authors.affiliation: First Department of Internal Medicine, Nara Medical University, Kashihara, Nara, Japan. satosi01@naramed-u.ac.jp
authors.forename: Satoshi
authors.initials: S
authors.lastname: Okayama
authors.forename: Shiro
authors.initials: S
authors.lastname: Uemura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Sugimoto
authors.forename: Satoshi
authors.initials: S
authors.lastname: Enomoto
authors.forename: Kenji
authors.initials: K
authors.lastname: Onoue
authors.forename: Sawako
authors.initials: S
authors.lastname: Omori
authors.forename: Tsunenari
authors.initials: T
authors.lastname: Soeda
authors.forename: Satoshi
authors.initials: S
authors.lastname: Somekawa
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Ishigami
authors.forename: Makoto
authors.initials: M
authors.lastname: Watanabe
authors.forename: Tamio
authors.initials: T
authors.lastname: Nakajima
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kubota
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Saito
mesh_terms: D000273:Adipose Tissue / Q000473:pathology; D000368:Aged; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008068:Lipomatosis / Q000150:complications / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D009203:Myocardial Infarction / Q000150:complications / Q000473:pathology*; D009206:Myocardium / Q000473:pathology