Zobrazeno 1 - 10
of 49
pro vyhledávání: '"O Z, Roy"'
Publikováno v:
Medicalbiological engineeringcomputing. 29(3)
Publikováno v:
IEEE Transactions on Biomedical Engineering. :430-435
Fibrillation thresholds and their relationship to the duration of 60 Hz current flow, expressed as the number of 60 Hz cycles applied to the heart are described. Results are obtained for catheter surface areas ranging from 0.224 mm2 to 90 mm2. The in
Publikováno v:
Ultrasound in Medicine & Biology. 13:259-265
The effect of 1.0 MHz ultrasound at an intensity of 1.0 W/cm2 SATA on brain function of anaesthetized cats was assessed using Visual Evoked Potentials (VEPs). Ultrasound alone did not significantly modify the averaged VEP signals. However, acute hypo
Autor:
O. Z. Roy
Publikováno v:
Medical & Biological Engineering. 13:228-234
This paper presents fibrillation and rhythm disturbance thresholds obtained from saline-filled intracardiac catheters. Results from the endocardium and pericardium are presented and the effect of catheter cross-sectional area on threshold determinati
Publikováno v:
Canadian Electrical Engineering Journal. 3:24-28
Autor:
O. Z. Roy, R. W. Wehnert
Publikováno v:
Medical & Biological Engineering. 12:370-373
Publikováno v:
Medical & Biological Engineering & Computing. 22:225-228
Cardiac stimulation thresholds of short-duration large-amplitude electrical transients were studied. An isolated rabbit heart model was used and transients were applied directly to the heart through electrodes of 1 mm2 and 1 cm2 surface area. A varie
Autor:
O. Z. Roy, A. S. Podgorski
Publikováno v:
Medical & Biological Engineering & Computing. 27:445-448
Publikováno v:
Zeitschrift f�r Vergleichende Physiologie. 66:190-200
Investigations in 10 species showed that respiration of birds in flight is usually co-ordinated with wing beats, but the co-ordination is not obligatory. Respiration synchronous with wing beats (1∶1 co-ordination) was found only in pigeons and crow
Publikováno v:
Medical Electronics & Biological Engineering. 1:75-78
A single-shot procedure for coronary arteriography has provided effective visualization in dogs. An electronic circuit controls injection of a small bolus of contrast medium over two or three heart cycles by the retrograde approach, and automatically