What question did this study set out to answer?

To investigate how different infarction-to-reperfusion times affect cardiac function and myocardial strain in a rat model using 7T-MRI.

January 9, 2026Journal of Cardiovascular Development and DiseaseOpen Access

Time to Reperfusion Dictates Cardiac Function and Myocardial Strain in a 7-Tesla Magnetic Resonance Imaging Rat Model

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Key result

Myocardial radial strain decreased significantly from 40.6% in controls to 34.0% in the 20 min infarction group, indicating early myocardial dysfunction.

Authors

MIMako ItoThe University of Osaka JUJunpei UedaMorinomiya University of Medical Sciences SYSei YasudaThe University of Osaka

Discussion

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Implication

Evaluates cardiac function and myocardial strain in a rat model, suggesting timing influences recovery outcomes.

Key Points

To investigate how different infarction-to-reperfusion times affect cardiac function and myocardial strain in a rat model using 7T-MRI.
Used a rat model with distinct infarction duration groups: 20, 30, and 40 minutes alongside controls.
Monitored cardiac function through end-diastolic volume, end-systolic volume, and left-ventricular ejection fraction measurements.
Analyzed myocardial deformation via circumferential strain, radial strain, and longitudinal strain using MRI feature tracking.
Significant reductions in cardiac function and strain were observed in the 30 and 40 min infarction groups compared to controls.
Radial strain decreased notably between controls and the 20 min infarction group (40.6% vs. 34.0%, p < 0.05).
Longitudinal strain did not show significant differences between the 30 and 40 min groups, suggesting compensatory mechanisms.

Cite This Study

Ito et al. (2025) studied this question. Myocardial radial strain decreased significantly from 40.6% in controls to 34.0% in the 20 min infarction group, indicating early myocardial dysfunction.

synapsesocial.com/papers/69612fe730ef6c21f6853fb8 https://doi.org/10.3390/jcdd13010010

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Time to Reperfusion Dictates Cardiac Function and Myocardial Strain in a 7-Tesla Magnetic Resonance Imaging Rat Model

Discussion

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Implication

Key Points

Cite This Study

Time to Reperfusion Dictates Cardiac Function and Myocardial Strain in a 7-Tesla Magnetic Resonance Imaging Rat Model

Discussion

Member takes

Implication

Key Points

Cite This Study

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