Zobrazeno 1 - 10
of 146
pro vyhledávání: '"DAVID B. GESELOWITZ"'
Autor:
David B. Geselowitz
Publikováno v:
Proceedings of the IEEE. 102:399-404
Presents a reprinted article from the IEEE Global History Network's STARS articles, focusing on the history and development of electrocardiography equipment and medical services.
Autor:
J.E. Ferrara, David B. Geselowitz
Publikováno v:
IEEE Transactions on Biomedical Engineering. 46:377-381
Experimental and model studies were performed to measure the electrocardiographic surface Laplacian using a rectangular finite difference approximation. The experimental approach used ten normal subjects with two sites on the torso. Electrode spacing
Publikováno v:
Annals of Biomedical Engineering. 26:146-156
Laser Doppler velocimetry, with a high temporal resolution (1 ms time windows), was used to measure the flow field in two regions (major and minor orifices) near the aortic and mitral valves (Bjork Shiley™ monostrut Nos. 25 and 27, respectively) of
Publikováno v:
Annals of Biomedical Engineering. 25:1081-1091
Publikováno v:
Artificial Organs. 18:397-407
A new mock circulatory loop was developed for hemolysis studies associated with the Penn State electric ventricular assist device (EVAD). This flow loop has several advantages over previously designed loops. It is small enough to accommodate experime
Publikováno v:
Journal of Biomechanical Engineering. 116:190-200
Laser Doppler Anemometry measurements of mean (ensemble average) velocities and turbulent (Reynolds) stresses at 140 locations within the left ventricle of the Penn State 70 cc electric artificial heart/ventricular assist device are reported at 8 tim
Autor:
Gerson Rosenberg, John M. Tarbell, Steven Deutsch, David R. Stinebring, John A. Frangos, Theodore C. Lamson, David B. Geselowitz
Publikováno v:
ASAIO Journal. 39:M626-M633
Blood flow through a prosthetic heart valve operating in a ventricular assist device can be subdivided into three phases: a) forward flow through an open valve, b) rapid valve closure, and c) regurgitant back flow through a closed valve. Recent studi
Publikováno v:
Japanese Journal of Electrocardiology. 13:159-165
The bi-syncytial model of the heart leads to the result that the volume density of cardiac current source moment is proportional to the gradient of the macroscopic transmembrane action potential distribution. If the anisotropy ratios of inner and out
Publikováno v:
Circulation. 102:823-825
This editorial is a follow-up to a 1994 editorial1 by the same authors with the same title. The 1994 editorial emphasized that revised national standards, which relaxed the maximum allowable current that may be delivered to patients by electromedical