Dual gradient-echo in-phase and opposed-phase magnetic resonance imaging to evaluate lipomatous metaplasia in patients with old myocardial infarction.
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)).
Okayama
Satoshi
S
First Department of Internal Medicine, Nara Medical University, Kashihara, Nara, Japan. satosi01@naramed-u.ac.jp
Uemura
Shiro
S
Sugimoto
Hiroyuki
H
Enomoto
Satoshi
S
Onoue
Kenji
K
Omori
Sawako
S
Soeda
Tsunenari
T
Somekawa
Satoshi
S
Ishigami
Ken-ichi
K
Watanabe
Makoto
M
Nakajima
Tamio
T
Kubota
Yasushi
Y
Saito
Yoshihiko
Y
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