| 摘要 |
PCT No. PCT/JP93/00384 Sec. 371 Date Aug. 29, 1994 Sec. 102(e) Date Aug. 29, 1994 PCT Filed Mar. 29, 1993 PCT Pub. No. WO93/19674 PCT Pub. Date Oct. 14, 1993.An ultrasonic diagnostic method and apparatus are provided for enhancing real-time performance, enlarging visual field, and improving S/N ratio without sacrificing any of real-time performance, visual field and S/N ratio by field into two or more sections; generating sounding waves forming a main lobe and grating lobes to scan the sections of the visual field respectively by the main lobe and the grating lobes; separately and directively processing an echo wave received along the direction of the main lobe and echo waves received along the directions of the grating lobes to form images of the sections separately; and combining the images of the sections to display an image of the visual field.
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