| 摘要 |
<p>A method for assessing and displaying vasculature in a tissue mass using ultrasound and optimal velocity dependent data acquisition to differentiate between received signals from stationary tissue and received signals from slowly moving blood is disclosed herein. For a particular flow velocity, an optimal periodic or aperiodic signaling strategy is determined by matching the observation interval of any group of scatters to the correlated signal interval. Signals from moving blood cells are separated from signals from stationary tissue using a wall filter. Wall filtered signals from moving blood cells are further separated from signals from stationary tissue using a threshold filter. The resulting enhanced spatial and velocity resolution provides for identification of tumors by resistive index measurement, assessment of the percentage of vasculature in a section of tissue mass, and assessment of random structural characteristics, and further provides for three dimensional graphical display of vasculature within and surrounding a tissue mass.</p> |
