[Magnetic resonance imaging in diagnosing hypertrophic cardiomyopathy: an analysis of 10 cases].
Ten patients with hypertrophic cardiomyopathy (HCM) were examined with ECG-gated magnetic resonance imaging (MRI), one of whom was a child. MRI shows deformities of left ventricular cavity in all 10 patients, shapes of majority being long and narrow. Interventricular septums (IVS) were identically thickened in 5 patients, middle areas of IVS were thickened in 3 patients, local area of IVS was thickened in ball-shape in 1 patient, the apex was thickened in 1 patient. The ratio of thickened of IVS between in systole and diastole was less 1.08 in 5 patients and equal to 1.0 in 4 patients. The ratio of thickness of thickened left ventricular posterior wall between in systole and diastole was less than 1.25 in 7 patients. Ratios were respectively 1.25 and 1.53 in a child, obviously higher than those of adults. Left ventricular outflow tract was narrow in 1 patient. Left atria were enlarged in 7 patients. left ventricular diastolic function was damaged in 8 patients and systolic function was damaged in 1 patient. Signal intensity in IVS was not identical in 6 patients, of whom 3 patients suggests degenerate degree of myocardium in comparison with histology of myocardium. Proximal ends of coronary arteries were clear in 4 patients and didn't show narrow. All 10 patients were examined with UCG, 9 patients with ECT, 3 patients with ventricular angiography. All results coincide with features of HCM.
Wu
K G
KG
Department of Medicine Second Affiliated Hospital, China Medical University, Shenyang.
Zang
B
B
Yang
H T
HT
D000328:Adult; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis*; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology