| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that, when a subject is pressed using a plate and an acoustic wave is received by a probe via the plate, the acoustic wave is refracted due to the difference between the sound velocity in the compression plate and the sound velocity in the subject, and a reduction in resolution occurs when the refraction is not considered. <P>SOLUTION: A processing section of a biological information acquisition apparatus determines weights for signals or virtual wavefronts corresponding to the signals to be added to one another, using a thickness of the plate, a sound velocity of the plate, a sound velocity of the subject, and positions of image elements (pixels or voxels) for image information or arrival times of the acoustic wave from an acoustic-wave generating source in the subject, and adds the weighted signals or the weighted virtual wavefronts to one another, thereby acquiring the image information. <P>COPYRIGHT: (C)2010,JPO&INPIT |
