Using KAIS 0.15 Telsla resistive magnetic imaging system, ECG gated magnetic resonance (MR) image of variouscardiovascular disease was obtained in 10 patients. The findings of MR image of the cardiovascular disesase wereanlaysed and the results were as follows: 1. In 6 cases of acquired and congenital cardiac disease, there were 2cases of myocardial infarction, 1 case of mitral stenosis and 3 cases of corrected transpossition of greatvessels. The others were 3 cases of aortic disease and 1 case of pericardial effusion with lymphoma. 2. Myocardialthinning left ventricular aneurysm were detected in MR images of myocardial infarction. The left atrium was welldelineated and enlarged in the case of mitral stenosis. And segmental analysis was possible in the cases ofcorrected transposition since all cardiac structures were well delineated anatomically. 3. In aortic disease, thefindings of MR image were enlarged lumen, compressed cardic chambers in ascending aortic aneurysm, intimal flap,enhanced false lumen in dissecting aneurysm and irregular narrowing of aorta with arterial obstruction inTakayasu's arteritis. 4. Pericardial effusion revealed a conspicuous contrast with neighboring meidastinal fat andcardiac wall due to it low signal encircling cardiac wall. 5. ECG gated MR image is an accurate non-invasive imaging modality for the diagnosis of cardiovascular disease and better results of its clinical application areexpected in the futher development in the imaging system and more clinical experiences.
Aneurysm ; Aneurysm, Dissecting ; Aorta ; Aortic Aneurysm ; Aortic Diseases ; Arteritis ; Cardiovascular Diseases ; Diagnosis ; Electrocardiography ; Heart Atria ; Heart Diseases ; Humans ; Lymphoma ; Magnetic Resonance Imaging ; Mitral Valve Stenosis ; Myocardial Infarction ; Pericardial Effusion

Using KAIS 0.15 Tesla magnetic resonance imaging system, ECG gated magnetic resonance image (MRI) of cardiovascular system was obtained in 8 normal volunteers and 10 patients with various cardiovascular diseases diagnosed at Seoul National University Hospital. The findings of cardiovascular MRI were analysed and the results were as follows ; 1) ECG gated MRI revealed datailed normal anatomy of heart including both atrioventricles and great vessels in axial, sagittal and coronary sections with natural contrast of moving blood without contrast media. 2) Dynamic changes of both ventricular walls in systolic and diastolic phase were revealed in sequential axial MRI, and increased signals were detected in left ventricle and descending aorta due to slow flow in end diastole. 3) Left ventricular aneurysm and myocardial thinning were shown in 2 cases of myocardial infarction. Enlarged left atrium was noted in 1 cases of mitral stenosis. Segmental analysis was possible in 3 cases of corrected transposition of great vessels. 4) Enlarged lumen, intimal flap and irregular luminal narrowing were detected in each of ascending aortic aneurysm, dissecting aneurysm and Takayasu's arteritis respectively. Pericardial effusion due to lymphoma revealed low signal encircling heart in contrast with neighboring mediastinal structures and cardiac wall. 5) MRI is a new promising modality in the diagnosis of cardiovascular system, which has potentiality to give a hemodynamic information in addition to the anatomical detalis.
Aneurysm ; Aneurysm, Dissecting ; Aorta, Thoracic ; Aortic Aneurysm ; Cardiovascular Diseases ; Cardiovascular System* ; Contrast Media ; Diagnosis ; Diastole ; Electrocardiography ; Healthy Volunteers ; Heart ; Heart Atria ; Heart Ventricles ; Hemodynamics ; Humans ; Lymphoma ; Magnetic Resonance Imaging ; Mitral Valve Stenosis ; Myocardial Infarction ; Pericardial Effusion ; Phenobarbital ; Seoul ; Takayasu Arteritis ; Transposition of Great Vessels