Continuous Transmit Focusing Method and Apparatus for Ultrasound Imaging System
| Autor: | Larry Y. L. Mo, Ting-Lan Ji, Ching-Hua Chou, Brian Derek DeBusschere, Glen McLaughlin, Robert W. Steins, David J. Napolitano |
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| Rok vydání: | 2012 |
| Předmět: |
Acoustics and Ultrasonics
Computer science Acoustics Echo (computing) Echo location Acquisition rate Transducer Nuclear magnetic resonance Arts and Humanities (miscellaneous) Sampling (signal processing) Ultrasound imaging Physics::Accelerator Physics Focus (optics) Beam (structure) Computer Science::Information Theory |
| Zdroj: | The Journal of the Acoustical Society of America. 131:1678 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.3685691 |
| Popis: | In one embodiment, an ultrasound imaging method comprises: providing a probe that includes one or more transducer elements for transmitting and receiving ultrasound waves; generating a sequence of spatially distinct transmit beams which differ in one or more of origin and angle; determining a transmit beam spacing substantially based upon a combination of actual and desired transmit beam characteristics, thereby achieving a faster echo acquisition rate compared to a transmit beam spacing based upon round-trip transmit-receive beam sampling requirements; storing coherent receive echo data, from two or more transmit beams of the spatially distinct transmit beams; combining coherent receive echo data from at least two or more transmit beams to achieve a substantially spatially invariant synthesized transmit focus at each echo location; and combining coherent receive echo data from each transmit firing to achieve dynamic receive focusing at each echo location. |
| Databáze: | OpenAIRE |
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