Background: Diastolic dysfunction is common in patients with overt hypertrophic cardiomyopathy (HCM). Steady-state cine magnetic resonance imaging (MRI) enables measurement of the diastolic function of the left ventricle (LV), and late gadolinium enhanced MRI can delineate the presence and extent of fibrosis in HCM. The purpose of this study was to determine the relationship between the extent of myocardial fibrosis demonstrated by late gadolinium-enhanced MRI and diastolic dysfunction.
View Article and Find Full Text PDFThe objective of the present study was to examine cases of acute aortic dissection in order to analyze the clinical and diagnostic findings, and to summarize their treatment modalities, as well as their hospital outcomes. Between July 1998 and June 1999, we prospectively studied patients who were newly diagnosed as having acute aortic dissection at 25 hospitals in Mie prefecture. These cases were examined for their demographics, the characteristics of the clinical findings, diagnostic methods, treatment modalities according to the type of aortic dissection, and the early morbidity and mortality of the hospital outcomes.
View Article and Find Full Text PDFA case of acute myocardial infarction caused by left main trunk disease with dilated cardiomyopathy is presented. Cardiac MRI findings may suggest the etiology of left ventricular dysfunction in this case is idiopathic dilated cardiomyopathy, which associated with acute myocardial infarction caused by left main trunk disease.
View Article and Find Full Text PDFA 67-year-old woman with rheumatic aortic stenosis for 20 years was admitted to our hospital. Although she had no overt symptoms, she had severe aortic valve stenosis with a transvalvular pressure gradient of more than 150 mmHg. She had also been suffering from anemia and mild chronic renal failure.
View Article and Find Full Text PDFObjectives: The purpose of this study was to compare the diagnostic performances of Tl-201 single photon emission computed tomography (SPECT) and dobutamine stress cine magnetic resonance imaging (MRI) for predicting functional recovery of regional myocardial contraction in patients after myocardial infarction.
Methods: Twenty patients underwent Tl-201 SPECT and MRI 3-4 weeks after onset of myocardial infarction. Cine MR images were acquired in the resting state and during dobutamine stress.
Giant coronary aneurysms are sometimes misdiagnosed as cardiac tumors when they are filled with thrombus. In this case, dynamic magnetic resonance imaging revealed the coronary artery and cardiac mass, and was the most useful tool for diagnosis of giant coronary aneurysms non-invasively.
View Article and Find Full Text PDFEndoventricular circular patch plasty (Dor ventriculoplasty) is an effective strategy for severely impaired left ventricular function due to ischemic cardiomyopathy. Cardiac resynchronization therapy improves cardiac function in patients with severe congestive heart failure and an intraventricular conduction delay. The present case demonstrates the efficacy of adding cardiac resynchronization to Dor ventriculoplasty and mitral annuloplasty in a patient with severely impaired left ventricular function and an intraventricular conduction delay.
View Article and Find Full Text PDFPurpose: Previous studies demonstrated that low-dose dobutamine stress cine magnetic resonance imaging (MRI) and delayed contrast-enhanced MRI can provide assessments of myocardial viability. The purpose of this study was to evaluate the comparative diagnostic values of dobutamine cine MRI and delayed contrast-enhanced MRI for predicting functional recovery of myocardial contraction in patients with acute reperfused myocardial infarction.
Methods: Twenty-three patients with myocardial infarction after percutaneous coronary interventions were studied.
Purpose: To determine the accuracy of first-pass contrast material-enhanced stress myocardial magnetic resonance (MR) imaging for depiction of myocardial ischemia in patients without myocardial infarction.
Materials And Methods: First-pass contrast-enhanced MR images of the entire left ventricle were acquired in 104 patients at rest and during dipyridamole-induced stress by using an interleaved notched saturation technique. Coronary angiography was performed in all patients, and stress perfusion single photon emission computed tomography (SPECT) was performed in 69 patients.
We report a rare case of an inverted left atrial appendage without prior cardiac surgery. A left atrial mass was incidentally found during routine echocardiography in a 19-year-old man with mitral valve prolapse. Echocardiography revealed a hyperechoic mass in the left atrium, and a neoplastic lesion could not be excluded.
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