심장판막질환의 영환자기공명영상 = Cine-MR Imaging of Valvular heart Disease

다국어 초록 (Multilingual Abstract)

Cine-MR Imaging was done in 2 normal persons and 9 patients of valvular heart disease with 20 T superconducting MR system (Spectro-20000 ; GoldStar Korea). The MRI was undertaken using gradient echo technique with small flip angle. Repetition time(TR) was 34 msec and echo time(TE) 18 msec In most cases 20 to 30 frames could be obtained during one cardiac cycle. With normal heart high signal intensity was identified in the blood filled cardiac chambers, transient signal void was observed near tricuspid mitral and aortic valves cardiac chambers. Transient signal void was observed near tricuspid mitral and aortic valves due to the tubulences induced by valve opening or closure. In 6 cases of mitral valvular disease mitral valve was identified in all cases. The valvular motion was limited revealing doming toward cardiac apex during diastole. Signal void was evident in pansystolic phase of left ventricle in all cases. Evidences of combined aortic or tricuspid valve disease were also demonstrted revealing signal void in the corresponding cardiac chambers. Cine-MRI seemed to be not only a good non-invasive diagnostic modality for the valvular heart disease but also an accurate modality for cardiac functional evaluation.