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http://dx.doi.org/10.7742/jksr.2011.5.5.289

Evaluation of Cardiac Ejection Fraction using Cardiac MRI  

Eun, Sung-Jong (Department of Radiology, Hanlyo University)
Kook, Jin-Sun (Department of Radiology, Hanlyo University)
Publication Information
Journal of the Korean Society of Radiology / v.5, no.5, 2011 , pp. 289-294 More about this Journal
Abstract
The aim of this study is to evaluate the differences of ejection fraction of left ventricle through the quantitative analysis of diastolic and systolic volumes according to slices selected using cardiac MR imaging. A total of 12 volunteers (7 normal, 1 myocardium bridge, and 4 arrhythmia) underwent cardiac MRI on a MR scanner(Magnetom Trio, Siemens, Germany). Ejection fractions for quantitative analysis were calculated at single slice of center of left ventricle, 3, 5, and 6-7 slices extending from the center of left ventricle. Average values were analyzed for evaluating differences of ejection fraction according to the number of slices selected. Mean value of normal person of ejection fraction were 67.14% at single slice of center of left ventricle, 66.24% at 3 slices, 65.63% at 5 slices, and 65.29% at 6-7 slices. While ejection fraction obtained from a patient with 61.74% at single slice of center of left ventricle, 60.92% at 3 slices, 60.89% at 5 slices, and 61.89% at 6-7 slices. There was no significant differences by the number of slices selected. This study demonstrates that ejection fraction obtained from single slice of center of left ventricle may represent a optimum parameter for cardiac function, instead of the value calculated on the variable slices selected.
Keywords
Magnetic resonance imaging; cardiac ejection fraction; diastolic; systolic;
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