| 费保蔚,王波,卞正中,程敬之.相控阵超声诊断仪中延时分布对成像影响的研究[J].声学技术,1993,(1):24~29 |
| 相控阵超声诊断仪中延时分布对成像影响的研究 |
| The effect of the delay distribution in phased-array ultrasonic diagnostic imaging |
| 投稿时间：1992-07-01 修订日期：1992-10-24 |
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| 摘要点击次数: 1326 |
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| 中文摘要: |
| 在相控阵超声诊断仪中,相控阵单元是仪器的关键部分。而延时量的计算及分布是相控阵单元的核心内容,它直接影响着目标物成像时的形态、位置及几何尺寸等特征信息。本文对三种延时分布方案进行了研究,提出了两种最佳延时方案。采用该方法实现相控阵避免了成像中的失真现象,而且电路实现较为简便。 |
| 英文摘要: |
| In phased-array ultrasonic diagnostic equipment, the phased-array controlling unit is the most important part.The delay distribution is the essence of the phased-array.lt affects the image of an object in many aspects, such as shape. dimension and position.In this paper, we discuss three design methods of delay distribution and present two optimum design methods. Using these methods,the design of phased-array controlling unit is simplified and the image distortion is eliminated. |
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