Background Intra-ventricular blood flow and regional myocardial motion are two key components used in assessing cardiac function. Both can be quantified using phase contrast MRI, but typically require two imaging sequences to be acquired one with a high velocity encoding value (VENC) and one with a low VENC, selected to optimize velocity sensitivity while avoiding aliasing. In an effort to obta...

The effect of dispersion on acoustic wave sensors is considered. The discussion is focused upon layer guided surface acoustic waves ~Love waves!, which obtain their high mass sensitivity for the first Love wave mode by optimizing the guiding layer thickness, d, such that d;l l/4; the wavelength in the layer is given by l l5 f /v l where f is the operating frequency and v l is the shear acoustic...