Methods and apparatus for the examination and treatment of internal organs
US5993393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1995 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jan 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8997
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Ultrasonic apparatus for visualizing the internal organs of the human body using an ultrasonic array probe is characterized by means for digitising the ultrasonic echo signals and means for processing the digitised signals. Data may be sampled from each array element excited separately, or on a group of elements sequentially with a very small time increment between samples. Processing of data can include switching the transmit carrier frequency between scans, compensation for ringing effects in the transducers, synthetic aperture focussing techniques, software envelope or transform demodulation, attenuation or time gain correction and data compression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.