| Novel application of black-blood echo-planar imaging to the assessment of myocardial infarction. | |
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MedLine Citation:
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PMID: 20339971 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to clarify the characteristics of black-blood echo-planar imaging (BB-EPI) in the assessment of infarct-related myocardial edema (IRME), compared with T2-weighted imaging (T2WI). Thirteen acute myocardial infarction (MI) patients after reperfusion and 11 old MI patients underwent BB-EPI and T2WI, excluding those with posterior MI. In acute MI patients, signal intensity ratio (SI ratio) of edema to normal myocardium was measured. Black-blood echo-planar imaging revealed hyperintensity in the same region identified as IRME on T2WI in all acute MI patients, and SI ratio was significantly higher in BB-EPI (2.66 +/- 1.58) than in T2WI (1.44 +/- 0.22) (P < 0.05). However, BB-EPI showed hyperintensity in posterior wall, where there is no clinical evidence of acute MI, in 2 out of 13 acute MI patients. Both T2WI and BB-EPI detected no IRME in known old infarct area of all old MI patients, but BB-EPI showed hyperintensity in the posterior wall of 4 out of 11 old MI patients. Black-blood echo-planar imaging can depict IRME with sufficient suppression of background and blood flow signals, and with excellent edema-to-normal myocardium contrast resolution. However, BB-EPI sometimes shows an inconsistent signal area with T2WI specifically in posterior wall. The wide practical use of BB-EPI requires the solution to this serious problem. |
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Authors:
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Satoshi Okayama; Shiro Uemura; Makoto Watanabe; Yoshinobu Morikawa; Kenji Onoue; Tsunenari Soeda; Hajime Iwama; Satoshi Somekawa; Yukiji Takeda; Hiroki Uramoto; Yoshiyuki Kobayashi; Yoshihiko Saito |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2010-03-26 |
Journal Detail:
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Title: Heart and vessels Volume: 25 ISSN: 1615-2573 ISO Abbreviation: Heart Vessels Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-26 Completed Date: 2010-06-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8511258 Medline TA: Heart Vessels Country: Japan |
Other Details:
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Languages: eng Pagination: 104-12 Citation Subset: IM |
Affiliation:
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First Department of Internal Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Contrast Media / diagnostic use Diffusion Magnetic Resonance Imaging* Edema, Cardiac / diagnosis*, etiology, pathology Gadolinium DTPA / diagnostic use Humans Magnetic Resonance Imaging, Cine* Male Middle Aged Myocardial Infarction / complications, diagnosis*, pathology, therapy Myocardial Perfusion Imaging Myocardium / pathology* Predictive Value of Tests |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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