Abstract
Background: We sought to determine the accuracy of myocardial contrast echocardiography (MCE)-derived index of myocardial blood flow and myocardial blood volume fraction (MBVF) in predicting transmural extent of infarction and wall-motion recovery. Methods: Low and high mechanical index MCE and contrast-enhanced magnetic resonance imaging were performed 5 to 7 days after successful percutaneous revascularization in 30 patients with acute myocardial infarction and regional wall-motion change was assessed 3 months later. The index of myocardial blood flow was calculated as A × β (dB/s) using the equation y = A (1 - e-βt), which fits the replenishment curve of low mechanical index MCE. The MBVF (mL/100 g myocardium) was calculated as 100 × 10relative contrast intensity [CI]/10, using the relative CI by subtracting the cavity CI from the adjacent transmural CI using high mechanical index MCE. The contrast-enhanced magnetic resonance imaging-derived transmural extent of delayed hyperenhancement (DE) in 16 segments were measured and compared with corresponding MCE data. Results: Among 480 segments, 382 measurable segments were subdivided into 5 groups as follows: no DE, 1% to 25% DE, 26% to 50% DE, 51% to 75% DE, and 76% to 100% DE. An increment of the extent of DE was significantly related to a decrement of A × β (P < .001) and MBVF (P < .001). The optimal cut-off MBVF for predicting greater than 50% DE was 1.92 mL (sensitivity 82%, specificity 73%, P < .01), and persistently dysfunctional motion was 1.81 mL (sensitivity 74%, specificity 75%, P < .01). Conclusion: The MCE-derived A × β and MBVF can be effective predictors of transmural extent of infarction and wall-motion recovery in the reperfused acute myocardial infarction.
| Original language | English |
|---|---|
| Pages (from-to) | 1211-1219 |
| Number of pages | 9 |
| Journal | Journal of the American Society of Echocardiography |
| Volume | 19 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2006 Oct 1 |
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All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
- Cardiology and Cardiovascular Medicine
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Prediction of Transmural Extent of Infarction with Contrast Echocardiographically Derived Index of Myocardial Blood Flow and Myocardial Blood Volume Fraction : Comparison with Contrast-enhanced Magnetic Resonance Imaging. / Choi, Eui Young; Seo, Hye Sun; Park, Sungha; Kim, Hyun Joo; Ahn, Jeong Ah; Ko, Young Guk; Choi, Byoung Wook; kang, seokmin; Choi, Donghoon; Ha, Jong Won; Rim, Se Joong; Jang, Yangsoo; Chung, Namsik.
In: Journal of the American Society of Echocardiography, Vol. 19, No. 10, 01.10.2006, p. 1211-1219.Research output: Contribution to journal › Article
TY - JOUR
T1 - Prediction of Transmural Extent of Infarction with Contrast Echocardiographically Derived Index of Myocardial Blood Flow and Myocardial Blood Volume Fraction
T2 - Comparison with Contrast-enhanced Magnetic Resonance Imaging
AU - Choi, Eui Young
AU - Seo, Hye Sun
AU - Park, Sungha
AU - Kim, Hyun Joo
AU - Ahn, Jeong Ah
AU - Ko, Young Guk
AU - Choi, Byoung Wook
AU - kang, seokmin
AU - Choi, Donghoon
AU - Ha, Jong Won
AU - Rim, Se Joong
AU - Jang, Yangsoo
AU - Chung, Namsik
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Background: We sought to determine the accuracy of myocardial contrast echocardiography (MCE)-derived index of myocardial blood flow and myocardial blood volume fraction (MBVF) in predicting transmural extent of infarction and wall-motion recovery. Methods: Low and high mechanical index MCE and contrast-enhanced magnetic resonance imaging were performed 5 to 7 days after successful percutaneous revascularization in 30 patients with acute myocardial infarction and regional wall-motion change was assessed 3 months later. The index of myocardial blood flow was calculated as A × β (dB/s) using the equation y = A (1 - e-βt), which fits the replenishment curve of low mechanical index MCE. The MBVF (mL/100 g myocardium) was calculated as 100 × 10relative contrast intensity [CI]/10, using the relative CI by subtracting the cavity CI from the adjacent transmural CI using high mechanical index MCE. The contrast-enhanced magnetic resonance imaging-derived transmural extent of delayed hyperenhancement (DE) in 16 segments were measured and compared with corresponding MCE data. Results: Among 480 segments, 382 measurable segments were subdivided into 5 groups as follows: no DE, 1% to 25% DE, 26% to 50% DE, 51% to 75% DE, and 76% to 100% DE. An increment of the extent of DE was significantly related to a decrement of A × β (P < .001) and MBVF (P < .001). The optimal cut-off MBVF for predicting greater than 50% DE was 1.92 mL (sensitivity 82%, specificity 73%, P < .01), and persistently dysfunctional motion was 1.81 mL (sensitivity 74%, specificity 75%, P < .01). Conclusion: The MCE-derived A × β and MBVF can be effective predictors of transmural extent of infarction and wall-motion recovery in the reperfused acute myocardial infarction.
AB - Background: We sought to determine the accuracy of myocardial contrast echocardiography (MCE)-derived index of myocardial blood flow and myocardial blood volume fraction (MBVF) in predicting transmural extent of infarction and wall-motion recovery. Methods: Low and high mechanical index MCE and contrast-enhanced magnetic resonance imaging were performed 5 to 7 days after successful percutaneous revascularization in 30 patients with acute myocardial infarction and regional wall-motion change was assessed 3 months later. The index of myocardial blood flow was calculated as A × β (dB/s) using the equation y = A (1 - e-βt), which fits the replenishment curve of low mechanical index MCE. The MBVF (mL/100 g myocardium) was calculated as 100 × 10relative contrast intensity [CI]/10, using the relative CI by subtracting the cavity CI from the adjacent transmural CI using high mechanical index MCE. The contrast-enhanced magnetic resonance imaging-derived transmural extent of delayed hyperenhancement (DE) in 16 segments were measured and compared with corresponding MCE data. Results: Among 480 segments, 382 measurable segments were subdivided into 5 groups as follows: no DE, 1% to 25% DE, 26% to 50% DE, 51% to 75% DE, and 76% to 100% DE. An increment of the extent of DE was significantly related to a decrement of A × β (P < .001) and MBVF (P < .001). The optimal cut-off MBVF for predicting greater than 50% DE was 1.92 mL (sensitivity 82%, specificity 73%, P < .01), and persistently dysfunctional motion was 1.81 mL (sensitivity 74%, specificity 75%, P < .01). Conclusion: The MCE-derived A × β and MBVF can be effective predictors of transmural extent of infarction and wall-motion recovery in the reperfused acute myocardial infarction.
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U2 - 10.1016/j.echo.2006.04.027
DO - 10.1016/j.echo.2006.04.027
M3 - Article
VL - 19
SP - 1211
EP - 1219
JO - Journal of the American Society of Echocardiography
JF - Journal of the American Society of Echocardiography
SN - 0894-7317
IS - 10
ER -