Decoding multipulse ultrasound data
US12201480B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2022 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Aug 30, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8959
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Diagnostic imaging of deep targets in the body requires sufficient signal amplitude to overcome effects such as attenuation with depth and thermal noise produced in signal reception. Coded excitation provides several strategies to increase the total transmitted energy without exceeding peak amplitude safety limits. Temporal coding has proven particularly effective, but these frequency or amplitude modulation techniques require additional transmit capabilities and often require complex processing to reduce decoding artifacts. An alternative code is presented based on time delays that relies on repeated transmit pulses that can be decoded using spatiotemporal synthetic aperture processing. A 16-pulse code is demonstrated that achieves an 11.1 dB improvement in signal-to-noise ratio (SNR) while maintaining axial resolution and sufficient range lobe performance. Further, a beamforming strategy for multiline transmission ultrasound data is presented that recognizes the data as time delay encoded and performs an appropriate decoding to reduce common reconstruction artifacts. This approach simultaneously enables synthetic aperture focusing of multiline transmission data, improving focusin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.