Acute myocardial infarction: tissue characterization with T1rho-weighted MR imaging--initial experience. | Academic Article individual record

Acute myocardial injury was evaluated in 21 patients by using a contrast material-enhanced T1rho-weighted cine turbo field-echo magnetic resonance (MR) imaging sequence and a delayed-enhancement sequence. In 12 of 21 patients, conventional T1-weighted contrast-enhanced cine turbo field-echo MR images were also collected for direct comparison with T1rho-weighted images. Delayed-enhancement technique distinctly characterized irreversible injury (percentage enhancement, 588% +/- 344). With T1rho weighting, percentage enhancement of irreversibly injured myocardium was 68% +/- 41, compared with 23% +/- 24 without T1rho weighting (P <.006). The addition of T1rho weighting to contrast-enhanced cine turbo field-echo MR sequences may offer a new contrast enhancement mechanism for characterization of acutely infarcted myocardium.

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  • Myocardial Infarction
  • Magnetic Resonance Imaging, Cine
  • Image Processing, Computer-Assisted
  • Sensitivity And Specificity
  • Image Enhancement
  • Adult
  • Myocardium
  • Gadolinium Dtpa
  • Humans
  • Electrocardiography
  • Male
  • Reference Values
  • Aged, 80 And Over
  • Female
  • Aged
  • Middle Aged
  • Contrast Media
  • Myocardial Reperfusion Injury
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