| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of detecting a position wherein a unique region such as a reflector of high reflectivity, etc. is existable from receieved waveform data of an elastic wave, and a technique to support detection of a unique region by elastic wave diagnosis, and further capable of estimating physical values of a unique region. SOLUTION: The signal processing apparatus scans a beam of elastic waves into an object to be examined, acquires received waveform data of a plurality of scan lines, and performs signal processing to form a tomographic image of the object to be examined from the received waveform data of the plurality of scan lines. The signal processing apparatus includes: a scan line correlation value calculation part (009) that calculates correlation values of received waveform data between a first scan line and a second scan line that has a prescribed relationship with the first scan line, for a plurality of positions on the scan lines; and a correlation change position extraction part (010) that extracts, from among the plurality of positions on the scan lines, a position at which the correlation value becomes a value different from a prescribed value as a position at which a unique region can exist. COPYRIGHT: (C)2010,JPO&INPIT |
