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- W2361962731 abstract "<h3>Background</h3> Accurate evaluation of infarct size by cardiac magnetic resonance (CMR) has important clinical significance. We examined how well a qualitative visual method of scoring (VS) the extent of myocardial infarction correlates with a quantitative planimetry (PL) method of determining the extent of left ventricular (LV) infarct size. <h3>Methods</h3> 51 consecutive patients with evidence of myocardial infarction by CMR were evaluated. Two different methods were used to calculate infarct mass as percentage of LV mass. A quantitative method, planimetry, was performed using an NIH software algorithm in which infarct mass was calculated based on a manual drawing of infarcted regions. In a second approach, a qualitative visualization scoring of infarcted regions was performed based on a segmental model in which each short axis slice was evenly divided into 12 segments. Transmural extent of hyperenhancement (HE) was then graded on a 4-point scale: 0, 0% HE; 1, 1-25% HE; 2, 26-50% HE; 3, 51-75% HE; 4, 76-100% HE. The final score of each patient (sum of areas of HE) was divided by the total possible score, yielding the infarct size as a percentage of LV mass. <h3>Results</h3> The mean LV ejection fraction was 34±16%; the mean infarct size as a percentage of LV mass was 20±12 by planimetry, and 25±12 by VS (p: NS). The correlation coefficient between the two different modalities was 0.84. <h3>Conclusion</h3> This study showed a good correlation between a qualitative and quantitative method of determining infarct size." @default.
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- W2361962731 date "2005-01-01" @default.
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- W2361962731 title "254 CARDIAC MRI: COMPARISON OF INFARCT SIZE BY QUANTITATIVE PLANIMETRY VERSUS A QUALITATIVE VISUAL SCORING METHOD" @default.
- W2361962731 doi "https://doi.org/10.2310/6650.2005.00005.253" @default.
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