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http://dx.doi.org/10.5392/JKCA.2021.21.02.437

A Study on Misdiagnosis Rates of Ejection Fraction Associated with Cardiac Computed Tomography: Suggestions and Correction for Improvement  

Na, Sa-Ra (한양대학교 대학원 보건학과)
Jeong, Mi-Ae (강원대학교 치위생학과)
Publication Information
The Journal of the Korea Contents Association / v.21, no.2, 2021 , pp. 437-444 More about this Journal
Abstract
The aim of this study was to compare the cardiac CT and cardiac MRI in calculating and correcting the left ventricle ejection fraction by analyzing the physical and temporal resolution for reducing the misdiagnosis rate. One hundred thirty-eight patients with aortic value regurgitation who underwent both cardiac CT and cardiac MRI were analyzed. Left ventricle ejection fractions calculated from each exam were corrected based on the physical and temporal resolution differences and the reliability test evaluated whether the misdiagnosis rate of cardiac CT was improved after the correction. As a result of the study, the misdiagnosis rate of cardiac CT ejection fraction before correcting the difference in physical and temporal resolution was 38.4%(53 persons). In addition, it can be seen that the corrected cardiac CT ejection fraction confirmed in the Bland-Altman plot was highly consistent with the ejection fraction of cardiac MRI. In conclusion, as the cardiac CT is less well suited for measuring ejection fraction, physical characteristics and the time resolution correction using cardiac MRI is needed and the misdiagnosis rate after correction decreased to 14.5%(20 persons). Therefore, this study appears more appropriate for better prediction of ejection fraction and clinical utility.
Keywords
Left Ventricle Ejection Fraction; Cardiac Computed Tomography; Cardiac Magnetic Resonance Imaging; Temporal Resolution;
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