title: T2-weighted cardiac magnetic resonance imaging of edema in myocardial diseases.
abstract: The purpose of this paper is to describe imaging techniques and findings of T2-weighted magnetic resonance imaging (MRI) of edema in myocardial diseases. T2-weighted cardiac MRI is acquired by combining acceleration techniques with motion and signal suppression techniques. The MRI findings should be interpreted based on coronary artery supply, intramural distribution, and comparison with delayed-enhancement MRI. In acute myocardial diseases, such as acute myocardial infarction and myocarditis, the edema is larger than myocardial scarring, whereas the edema can be smaller than the scarring in some types of nonischemic cardiomyopathy, including hypertrophic cardiomyopathy. T2-weighted MRI of edema identifies myocardial edema associated with ischemia, inflammation, vasculitis, or intervention in the myocardium and provides information complementary to delayed-enhancement MRI.
authors.affiliation: Department of Radiology, Nippon Medical School, 1-1-5 Senadagi, Bunkyo-ku, Tokyo 113-8603, Japan. yas-amano@nifty.com
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Amano
authors.forename: Masaki
authors.initials: M
authors.lastname: Tachi
authors.forename: Hitomi
authors.initials: H
authors.lastname: Tani
authors.forename: Kyoichi
authors.initials: K
authors.lastname: Mizuno
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Kumita
mesh_terms: D000208:Acute Disease; D009202:Cardiomyopathies / Q000175:diagnosis*; D002921:Cicatrix / Q000175:diagnosis; D004489:Edema, Cardiac / Q000175:diagnosis*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007249:Inflammation / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009206:Myocardium / Q000473:pathology; D015203:Reproducibility of Results; D054549:Takotsubo Cardiomyopathy / Q000175:diagnosis