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KMID : 1103720100620050427
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Journal of the Korean Society of Radiology
2010 Volume.62 No. 5 p.427 ~ p.434
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The Cardiac MR Images and Causes of Paradoxical Septal Motion
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Kim Dong-Hun
Choi Sang-Il
Chun Eun-Ju
Choi Sung-Hoon
Park Jae-Hyung
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Abstract
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Real-time cine MRI studies using the steady-state free precession (SSFP) technique are very useful for evaluating cardiac and septal motion. During diastole, the septum acts as a compliant membrane between the two ventricles, and its position and geometry respond to even small alterations in the trans-septal pressure gradients. Abnormal septal motion can be caused by an overload of the right ventricle, delayed ventricular filling and abnormal conduction. In this study, we illustrate, based on our experiences, the causes of abnormal septal motion such as corrective surgery for tetralogy of Fallot, an atrial septal defect, pulmonary thromboembolism, mitral stenosis, constrictive pericarditis and left bundle branch block. In addition, we discuss the significance of paradoxical septal motion in the context of cardiac MR imaging.
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KEYWORD
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Magnetic Resonance Imaging, Heart Function Test, Heart Ventricles, Heart Diseases
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