Test object geometry for ultrasound transmission calibration
US6264607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/0875
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.