A Gerbode-type defect is a ventricular septal defect communicating directly between the left ventricle and right atrium. It is usually congenital, but rarely is acquired, as a complication of endocarditis. This can be anatomically possible because the normal tricuspid valve is more apically displaced than the mitral valve. However, identification of an actual communication is often extremely di...

fixed myocardial defects in both stress and rest images, could be artifactual as a result of soft tissue attenuation. to increase specificity and identify the false positive results, we used gated technique to evaluate the wall motion and wall thickening as an index to differentiate real ischemic lesions from artifactual defects. 93 patients were studied. in 46 patients (48.8%) fixed perfusion ...

The energy transfer mechanisms and structures playing a role in these adverse-pressure-gradient (APG) turbulent boundary layers (TBLs) with small large velocity defects are investigated. We examine the wall-normal spectral distributions of energy, production pressure-strain APG TBLs compare those canonical flows. It is found that not profoundly affected by an increase defect, although spectra d...

by employing the theoretical method based on tight-binding, we study electronic band structure of single-wall carbon nanotube (cnt) superlattices, which the system is the made of the junction between the zigzag and armchair carbon nanotubes. exactly at the place of connection, it is appeared the pentagon–heptagon pairs as topological defect in carbon hexagonal network. the calculations are base...

We report on the dynamical behavior of defects of strength s=±1/2 in a lyotropic liquid crystal during the annihilation process. By following their positions using time-resolved polarizing microscopy technique, we present statistically significant evidence that the relative velocity between defect pairs is Gaussian distributed, antipersistent, and long-range correlated. We further show that sim...

Pericardial rupture after blunt chest trauma is described in the literature. The rupture is mostly caused by high velocity trauma with associated injuries. As a result the patients are often critically ill. We describe a case of a 59-year-old man who suffered from an isolated pericardial rupture with a left-sided haematothorax diagnosed 3 months after minimal blunt chest trauma. The patient was...

Background The normal pattern of left ventricular (LV) inflow and ejection of affects the efficiency of cardiac pumping performance. Altered inflow direction due to a corrected atrioventricular septal defect (AVSD) may disturb this pattern leading to decreased efficiency. We aimed to quantitatively describe the LV blood flow pattern using 4-dimensional velocity-encoded cardiac magnetic resonanc...

We present several examples of the interesting phenomenology shown by a moving polariton condensate in semiconductor microcavities. The superfluid behavior is probed by colliding the polariton condensate against physical obstacles in the form of natural defects of the sample, demonstrating a clear suppression of scattering when the speed of the flow lies below the critical velocity. At higher v...

A teenage girl with a chronic large posterior fossa tumor had primary position right-beating nystagmus with a constant-velocity slow phase. Smooth pursuit was normal to the left but absent to the right. Vestibuloocular move­ ments were present in both directions. The findings are analogous to downbeat and upbeat nystagmus, in which unidirectional pursuit palsies have been postulated as the path...