公开(公告)号：US06264607B1

公开(公告)日：2001-07-24

申请号：US09442438

申请日：1999-11-17

申请人： Jeffrey Goll ,  Donald Wood ,  David Pratt

发明人： Jeffrey Goll ,  Donald Wood ,  David Pratt

IPC分类号： A61B800

CPC分类号： A61B8/587 ,  A61B8/0875

摘要： A cylindrical test object for use in calibrating an ultrasonic bone analyzer has opposing ends that each contain a transducer seat optimized to allow intimate acoustic contact in spite of mechanical errors such as might be encountered in a scanning system. The test object is made of material having known ultrasonic characteristics. When opposing transducers are placed in the test object transducer seats, the test object is lifted off the holder and is free to rotate and translate over sufficient range to compensate for variances in the relative positions of the transducers. The shapes of the transducer ends and transducer seats are chosen to allow intimate acoustic contact in spite of any such translation or rotation. The test object may be a solid or a liquid encased in a solid.

摘要翻译： 用于校准超声波骨骼分析仪的圆柱形测试对象具有相对的端部，每个端部都包含优化的换能器座，尽管如扫描系统中可能遇到机械误差而允许紧密的声学接触。 测试对象由具有已知超声波特性的材料制成。 当将相对的换能器放置在测试对象换能器座中时，将测试对象从保持器上提起并且可自由旋转并平移足够的范围以补偿换能器的相对位置的变化。 选择换能器端部和换能器座的形状，以允许尽可能的任何这种平移或旋转而进行紧密的声学接触。 测试对象可以是固体或固体中的液体。