| 摘要 |
PURPOSE:To improve resolution of an image by converting wave received through an ultrasonic diagnostic unit temporarily into a minimum phase waveform and obtaining a conversion wave through deconvolution. CONSTITUTION:Ultrasonic wave is projected to different points in a body to be detected, then reflected wave is detected through a probe and pre-processed 104 to produce receiving waves A1, B1. Then data concerning to the receiving wave A1 is partially extracted 105 and data corresponding to a model wave 2 representative of the receiving wave A1 is read out. Then the model wave 2 is subjected to minimum phase model wave operation 106 thus producing a minimum phase waveform, i.e. a minimum phase model receiving wave 9. Furthermore, the minimum phase model receiving waveform 9, the model receiv ing wave 2 and the receiving wave B1 are subjected to minimum phase receiving wave operation 109 thus producing a minimum phase receiving wave 12. There after, the minimum phase receiving wave 12 is subjected to deconvolution processing 112 thus producing a converted wave 13. |
