Some investors have begun to consider the aggregate of their real estate investments as a
portfolio with its own risk and return characteristics. This permits them to adopt a method for …

Background Early diastolic intraventricular pressure gradients (IVPGs) have been proposed
to relate to left ventricular (LV) elastic recoil and early ventricular “suction.” Animal studies …

Photon-photon scattering in vacuum is extremely weak. However, strong effective interactions
between single photons can be realized by employing strong light-matter coupling. These …

… The graph of pressure drop reported in Figure 2 of Firstenberg et al. (1) study and computed
… in the ventricle), a distance similar to the example by Firstenberg et al. (1). In our example, …

OBJECTIVES We sought to determine the relationship between different echocardiographic
indices and pulmonary capillary wedge pressures (PCWP) in normal volunteers. …

1. Firstenberg MS, Vandervoort PM, Greenberg NL, et al. Noninvasive estimation of transmitral
pressure drop across the normal mitral valve in humans: importance of convective and …

OBJECTIVES We hypothesized that color M-mode (CMM) images could be used to solve the
Euler equation, yielding regional pressure gradients along the scanline, which could then …

Previous studies have shown that small intraventricular pressure gradients (IVPG) are
important for efficient filling of the left ventricle (LV) and as a sensitive marker for ischemia. …

… Firstenberg et al. This is an open access article distributed under the Creative Commons …
Bibawy, PM Mccarthy, and PM Vandervoort, “Physical and physiological determinants of …

Bessel beams are renowned members of a wide family of non-diffracting (propagation-invariant)
fields. We report on experiments showing that non-diffracting fields are also immune to …