Echocardiograph
Mostrando 13-14 de 14 artigos, teses e dissertações.
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13. Rapid estimation of echocardiographic peak velocity of circumferential fibre shortening (peak Vcf).
A transparent grid for estimating peak Vcf directly from the echocardiograph recording is described. Estimates so obtained were compared with peak Vcf measurements made by an echocardiographic digitising technique and with the angiographic ejection fraction in 13 patients with normal left ventricular function and 17 patients with impaired left ventricular fu
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14. Changes in myocardial echo amplitude during reversible ischaemia in humans.
OBJECTIVE--This study investigated the changes in regional myocardial ultrasonic backscatter, measured as myocardial echo amplitude, that occur during reversible myocardial ischaemia in humans. DESIGN--Left anterior descending coronary angioplasty was used to produce reversible myocardial ischaemia in human subjects. Regional myocardial echo amplitude was st