| 摘要 |
PROBLEM TO BE SOLVED: To easily discover a small part to be concerned in a screening mode and to obtain high resolution in a minute inspection mode. SOLUTION: In the screening mode, focus points concerning an ultrasonic wave beam thickness direction are comparatively reduced, a frame rate is comparatively heightened and also the thickness is comparatively increased (H2 and H3). In the minute inspection mode, the focus points are comparatively increased, the frame rate is comparatively lowered and the thickness is comparatively reduced (H4 and H5). Thus, even a small tumor or the like can be discovered in the case of screening and also plotted with high resolution in the case of a minute inspection.
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