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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | McAleavey, S. |
| Copyright Year | 2009 |
| Description | Author affiliation: Department of Biomedical Engineering, University of Rochester, NY 14627, USA (McAleavey, S.) |
| Abstract | Conventional ultrasound imaging uses mechanically focused transducers and/or delay-and-sum beamforming to focus transmit and receive beams and provide lateral resolution. Lateral resolution is determined by aperture size and wavelength. A sound speed of 1540 m/s is typically assumed; sound speed variations may degrade the focus. We present a novel method in which lateral resolution of the target is obtained by using traveling shear waves to encode the lateral position of targets in the phase of the received echo. This method separates the lateral resolution of the imaging system from the properties of the ultrasound aperture. We demonstrate image formation with an unfocused transducer in phantoms of uniform shear modulus. |
| Starting Page | 181 |
| Ending Page | 184 |
| File Size | 1086412 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424443895 |
| ISSN | 19485727 |
| DOI | 10.1109/ULTSYM.2009.5441516 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-20 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Image reconstruction Ultrasonic imaging Focusing Ultrasonic transducers Image resolution Apertures Acoustic transducers Delay Array signal processing Degradation |
| Content Type | Text |
| Resource Type | Article |
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