| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To accurately diagnose hardness in an ultrasonic diagnostic apparatus by a so-called ultrasonic elastography method for combining the hardness of living tissue by a color and displaying it in tomographic images from reception signals (reflection echoes) before and after pressurizing an object with an ultrasonic probe. <P>SOLUTION: Separately from a region ROI1 of interest, a region ROI2 of non-interest to be the reference of hardness is set in the area of fixed hardness of a muscle or the like, the relative ratio of the distortion information before and after pressurization in respective pixels inside the region ROI1 of interest and the distortion information in the region ROI2 of non-interest to be the reference is obtained, and color display corresponding to the relative ratio is performed. Thus, it is not needed to include the living tissue to be the reference of the hardness in the region ROI1 of interest to be actually gazed, the region ROI1 of interest does not become large unnecessarily, and tissue distortion images are obtained just by analyzing a small data amount. Further, by being the relative ratio, even when the setting of the region of interest is varied by operators and diagnosing parts, etc., the hardness is accurately diagnosed. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
