Transplantation of human embryonic stem cell-derived cardiomyocytes improves myocardial performance in infarcted rat hearts.
- O. Caspi, I. Huber, L. Gepstein
- Medicine, BiologyJournal of the American College of Cardiology
- 6 November 2007
Calcium Handling in Human Embryonic Stem Cell‐Derived Cardiomyocytes
- J. Satin, Ilanit Itzhaki, L. Gepstein
- BiologyStem Cells
- 1 August 2008
The presence of a functional SR calcium store is established in early‐stage hESC‐CMs and a unique pattern of calcium handling is shown in these cells, which stresses the importance of the functional characterization of hESCs both for developmental studies and for the development of future myocardial cell replacement strategies.
Dynamic Thermography: Analysis of Hand Temperature During Exercise
- A. Zontak, S. Sideman, O. Verbitsky, R. Beyar
- EngineeringAnnals of Biomedical Engineering
- 1 November 1998
The thermographic skin response to exercise is characterized by a specific pattern which reflects the dynamic balance between hemodynamic and thermoregulatory processes.
Noninvasive quantification of left ventricular rotational deformation in normal humans using magnetic resonance imaging myocardial tagging.
- M. Buchalter, J. Weiss, E. Shapiro
- Medicine, BiologyCirculation
- 1 April 1990
Tagging was used to noninvasively quantify left ventricular torsion and circumferential-longitudinal shear (shearCL) in humans and calculated the difference in angular displacement of each epicardial and endocardial tag point at end systole from the systolic position of the corresponding tag point on the basal plane.
Prospective motion correction of X-ray images for coronary interventions
- G. Shechter, B. Shechter, J. Resar, R. Beyar
- Medicine, PhysicsIEEE Transactions on Medical Imaging
- 4 April 2005
Prospective motion correction of X-ray imaging of the heart is presented and the results showed a 48%-63% reduction in the motion of the landmarks, from a mean RMS displacement of 11.5-13.6 pixels to 4.4-7.1 pixels.
Influence of contractile state on curvilinearity of in situ end-systolic pressure-volume relations.
- D. Kass, R. Beyar, E. Lankford, M. Heard, W. Maughan, K. Sagawa
- BiologyCirculation
- 1989
Despite curvilinearity, Ees determined in situ throughout limited load ranges can accurately assess inotropic state; however, comparisons between ESPVRs should consider potential nonlinearity, and if possible, they should be made within similar end-systolic pressure ranges.
Effects of load manipulations, heart rate, and contractility on left ventricular apical rotation. An experimental study in anesthetized dogs.
- C. A. Gibbons Kroeker, J. Tyberg, R. Beyar
- MedicineCirculation
- 1 July 1995
The effects of load, contractility, and heart rate manipulations on LV twist as measured throughout the cardiac cycle by the optical apex rotation method are manifested by changes in both the amplitude and dynamics of torsion.
Identifying and tracking a guide wire in the coronary arteries during angioplasty from X-ray images
- D. Palti-Wasserman, A.M. Brukstein, R. Beyar
- MedicineIEEE Transactions on Biomedical Engineering
- 1 February 1997
The algorithm presented is a semiautomatic procedure for identifying and tracking the GW using specific characteristics of the GW, which enabled good tracking for a large number of images taken during angioplasty and was fitted to the final algorithm.
Left Ventricular Wall Thickness and Regional Systolic Function in Patients With Hypertrophic Cardiomyopathy: A Three‐dimensional Tagged Magnetic Resonance Imaging Study
- S. Dong, J. MacGregor, R. Beyar
- Medicine, BiologyCirculation
- 1 September 1994
TheMyocardium in patients with HCM is heterogeneously thickened and the fractional thickening and circumferential shortening of the abnormally thickened myocardium are reduced compared with healthy subjects.
Ventricular interaction and septal deformation: a model compared with experimental data.
- R. Beyar, S. Dong, E. R. Smith, I. Belenkie, J. Tyberg
- Biology, EngineeringAmerican Journal of Physiology
- 1 December 1993
The model and the experimental data agree and describe the important factors that modulate diastolic septal mechanics during acute differential ventricular loading, including large transmural gradients in stress and strain are associated with sePTal inversion.
...
...