| 摘要 |
An ultrasonic diagnostic apparatus and method are disclosed that use a contrast echo method, which can obtain an ultrasonic image indicating proper blood flow directions and distinguishably showing blood flow, enhancement in parenchyma and tissues with no enhancement. A method is performed with low mechanical index transmission to create B-mode, velocity and power signals and these signals are compared to determine a value for each pixel. Thus, tissues with no contrast-enhancement can be displayed with the B signal value in gray scale, parenchyma with contrast-enhancement with P and/or V values in dark green, slow blood flow (such as a vein) with P and/or V values in bright green and fast blood flow (such as an artery) with P and/or V values in red or blue according to the direction of the flow.
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