| 摘要 |
An ultrasonic pulse echo real time imaging system comprises a segmented transducer array formed by a plurality of juxtaposed transducer elements. Successive scans are performed by forming a first predetermined quantity of juxtaposed elements and incrementally shifting said first quantity along said array and subsequently shifting a second quantity of elements along the array, said first and said second quantity being different, for example four and three elements respectively. If the respective quantities are shifted incrementally by one element, the beam axis is stepped by one-half element width only, thereby providing improved image resolution. The image presentation on a cathode ray tube makes use of the interlacing feature, specifically the B-scan presentation line raster responsive to alternate array scans is interlaced. |
