Document Detail


Novel application of black-blood echo-planar imaging to the assessment of myocardial infarction.
MedLine Citation:
PMID:  20339971     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
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:
Type:  Comparative Study; Journal Article     Date:  2010-03-26
Journal Detail:
Title:  Heart and vessels     Volume:  25     ISSN:  1615-2573     ISO Abbreviation:  Heart Vessels     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-26     Completed Date:  2010-06-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511258     Medline TA:  Heart Vessels     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  104-12     Citation Subset:  IM    
Affiliation:
First Department of Internal Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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:
0/Contrast Media; 80529-93-7/Gadolinium DTPA

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Low-dose nesiritide improves renal function in heart failure patients following acute myocardial inf...
Next Document:  Enjoying hobbies is related to desirable cardiovascular effects.