Ultrasonic beam characterization device
US4406153A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1981 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Aug 27, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasound beam charcterization device is provided which may be employed during manufacture of diagnostic ultrasound equipment or during use thereof in the field in order to determine the beam profile of the ultrasonic transducer. The device includes a substantially air tight enclosure or box, having therein a thin element characterized by the properties of substantially uniform acoustic scattering and a different back scatter coefficient than the surrounding filler medium. The element is preferably oriented along or parallel to the axis of radiation of the transducer, and is advantageously in the form of a synthetic resin cellular foam material having a relatively high scattering level, which may be embedded in a different foam of lower scattering level. A reticulated cellular foam and salt solution fill the remaining volume of the preferred device, thereby permitting the imaging of transducer beam profiles in a tissue equivalent material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.