发明名称 |
Ultrasonic probe transmitting/receiving an ultrasonic wave of a plurality of frequencies and ultrasonic wave inspection apparatus using the same |
摘要 |
In an ultrasonic inspection apparatus, a piezoelectric element having a first resonant frequency is stuck to a complex resonance member having a second resonant frequency. The second resonant frequency is determined with a conversion in terms of half wavelength. A resultant ultrasonic probe transmits/receives ultrasonic waves of the first resonant frequency and a plurality of other frequencies. In constructing an ultrasonic tomographic image of the object to be inspected from a received signal obtained by using the ultrasonic probe, the imaging frequency is changed according to the depth in the object to be inspected.
|
申请公布号 |
US5895855(A) |
申请公布日期 |
1999.04.20 |
申请号 |
US19970815856 |
申请日期 |
1997.03.12 |
申请人 |
HITACHI MEDICAL CO. |
发明人 |
ISHIKAWA, YUKO;ITO, YUKIO;KANDA, HIROSHI |
分类号 |
G01N29/04;A61B8/00;A61B8/08;A61B8/15;B06B1/06;G01N29/12;G01N29/24;G01N29/44;G06T1/00;H04R17/00;(IPC1-7):G01N29/24 |
主分类号 |
G01N29/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|