| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem of blooming that a blood flow runs off the edge of a structure such as blood vessels by appearances when a two-dimensional blood flow image is displayed on a two-dimensional tomographic image. <P>SOLUTION: A first threshold value processing device 34 directly outputs information on the inputted velocity when information on power is greater than a threshold valueα1. A second threshold value processing device 36 directly outputs information on the inputted velocity after the first threshold value processing when the power after a logarithmic conversion is greater than a threshold valueα2. In the second threshold value processing, the information on the inputted velocity is made not to be outputted when the power after the logarithmic conversion is smaller than the threshold valueα2. Consequently, a low level component is extended by the logarithmic conversion, and an ultrasonic diagnostic apparatus has an advantage to perform threshold value processing precisely by facilitating setting of the threshold value. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
