Ultrasonic imaging system with beamforming using unipolar or bipolar coded excitation
US6155980A · kind A · utility
31Cited by
12References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52049
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Coded excitation for medical ultrasound imaging is implemented by transmitting code or element symbols in the encoded base sequence on different firings. The encoded base sequence is formed by convolving a base sequence with an oversampled code sequence. For each firing the designated code or element symbol in the encoded base sequence is replaced by a unit symbol (i.e., 1 or -1) while the other symbol locations are all set to zero. After each transmit, the received waveform is multiplied by the respective symbols and accumulated to synthesize the received encoded waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.