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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | McAleavey, S.A. |
| Copyright Year | 2009 |
| Description | Author affiliation: Department of Biomedical Engineering, Hajim School of Engineering and Applied Sciences, University of Rochester, NY 14627, USA (McAleavey, S.A.) |
| Abstract | Spatially Modulated Ultrasound Radiation Force (SMURF) uses impulsive acoustic radiation force to generate a shear wave of known spatial frequency in a medium of unknown shear modulus. The velocity of the induced shear wave, and hence the shear modulus of the medium, is determined from the period of the induced shear wave. Here we present the first experimentally obtained images of shear modulus using the SMURF method. Images of spherical (shown below), conical, and step edge phantoms are presented. Agreement within 8% is found between SMURF and unconfined compression measurements of uniform phantoms. Image resolution on the order of the push beam spacing is observed. A key advantage of this method is that tracking is performed along a single a-line, avoiding correlated noise bias errors encountered in multiple-track location methods. We describe the source of this noise. Modulus estimates are obtained without extensive spatial averaging, allowing high resolution to be obtained. |
| Starting Page | 487 |
| Ending Page | 490 |
| File Size | 5755818 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424443895 |
| ISSN | 19485727 |
| DOI | 10.1109/ULTSYM.2009.5441551 |
| 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 | Ultrasonic imaging Imaging phantoms Tracking Pulse measurements Biomedical imaging Biomedical engineering Frequency Image coding Image resolution Acoustic beams |
| Content Type | Text |
| Resource Type | Article |
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