| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasound diagnostic apparatus etc. which can automatically and optimally adjust a dynamic range which is difficult to predict in advance in ultrasound imaging. <P>SOLUTION: The ultrasound diagnostic apparatus is provided with an automatic adjustment function of the dynamic range that carries out statistic processing with the use of each brightness of image data that corresponds to a plurality of frames, automatically determines the upper limit of the dynamic range based on the brightness that corresponds to an echo signal from a subject, and automatically determines a lower limit value of the dynamic range based on the brightness that corresponds to a noise level. By this function, in the case where the dynamic range first established by manual operation, etc. is excessively wide or excessively narrow, the dynamic range can be automatically adjusted to an optimal setting even when the brightness distribution on the image is dynamically varied. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
