发明名称 |
Bone assessment apparatus and method |
摘要 |
A bone assessment apparatus for obtaining an assessment value E for a bone 12 with good repeatability by simple calculation using the waveform of a signal derived from received ultrasound which has passed through the bone. A transmitting transducer (20) transmits an ultrasound pulse. A receiving transducer (22) receives the ultrasound pulse which has passed through a test sample (10), and then converts the received ultrasound pulse to a signal. An A/D converter (30) digitizes the signal amplified in a receiving amplifier (28). The digitized signal is inputted to a calculator (32) via a transducer controller (26). The calculator (32) calculates the assessment value E for the bone (12) from characteristic values of the waveform of the signal, such as the half-value width of the first positive portion, which are derived from ultrasonic transmission characteristics of the bone (12).
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申请公布号 |
US5807250(A) |
申请公布日期 |
1998.09.15 |
申请号 |
US19960630535 |
申请日期 |
1996.04.10 |
申请人 |
ALOKA CO., LTD.;UEHA, SADAYUKI |
发明人 |
OHTOMO, NAOKI;UEHA, SADAYUKI |
分类号 |
A61B8/00;A61B8/08;(IPC1-7):A61B8/00 |
主分类号 |
A61B8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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