Microseismic monitoring is the only tool to provide locations of microseismic events induced e.g. during hydraulic fracturing unconventional reservoirs. Obtained become a baseline for evaluation stimulation effectiveness. However, due several factors, they can be different from true ones and lead misinterpretation. Most important inaccuracy velocity model used in location procedure, which often...

BACKGROUND Further progress in restoring a woman's health may be possible if a patient with a damaged pelvic floor could undergo medical imaging and biomechanical diagnostic tests. The results of such tests could contribute to the analysis of multiple treatment options and suggest the optimal one for that patient. AIM To develop a new approach for the biomechanical characterization of vaginal...

A transversely isotropic model in which the tilt is constrained to be normal to the dip (DTI model) allows for simplifications in the imaging and velocity model building efforts as compared to a general TTI model. Though this model, in some cases, can not be represented physically like in the case of conflicting dips, it handles all dips with the assumption of symmetry axis normal to the dip. I...

In a context such as acute respiratory distress syndrome, where optimum tidal volume and airway pressure levels are debated, the present study was designed to differentiate the right ventricular (RV) consequences of increasing lung volume from those secondary to increasing airway pressure during tidal ventilation. The study was conducted by combined two-dimensional echocardiographic and Doppler...

The velocity time integral (VTI) is a clinical Doppler ultrasound measurement of blood flow, measured by the area under wave curve and equivalent to distance traveled blood. This retrospective study assessed middle cerebral artery (MCA) VTI fetuses in pregnancies complicated maternal alloimmunization. indices MCA were retrieved from electronic medical records. Systolic deceleration-diastolic ti...

A transversely isotropic (TI) model in which the tilt is constrained to be normal to the dip (DTI model) allows for simplifications in the imaging and velocity model building efforts as compared to a general TI (TTI) model. Although this model cannot be represented physically in all situations, for example, in the case of conflicting dips, it handles arbitrary reflector orientations under the a...