SYSTEMS AND METHODS FOR IMAGERING ULTRASOUND WITH ORTHOGONAL DIVERGENTE STRAIGHT WAVES
Patent Information
- Application Number
- DE602019068468
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-04-24
- Publication Date
- 2025-04-09
- Estimated Expiration
- 2039-04-24
AI Technical Summary
Existing ultrafast ultrasound imaging techniques, such as diverging wave and synthetic aperture imaging, face challenges in achieving high frame rates while maintaining signal-to-noise ratio (SNR) and directivity, due to the limited aperture excitation and increased effective element size.
The use of sparse orthogonal encoding with diverging waves, where a subset of rows from an invertible orthogonal matrix, such as a Hadamard matrix, is employed to encode transmit signals, allowing for reduced insonifications while maintaining a large aperture for improved SNR and directivity.
This approach enables higher frame rates exceeding 1000 fps, improved SNR, and a broader angular insonification profile with enhanced directivity, effectively addressing the limitations of conventional ultrafast imaging techniques.