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Ultrasound pulse propagation in dispersive media
| Content Provider | Scilit |
|---|---|
| Author | Leeman, S. |
| Copyright Year | 1980 |
| Description | Journal: Physics in Medicine & Biology Human tissues show dispersive ultrasound absorption, and it is important to understand how ultrasound pulses in the diagnostic frequency range, 1-10 MHz, propagate in such media. An uncomplicated wave-equation model for human soft tissues is postulated, and its dispersion law for absorption is demonstrated to be compatible with existing experimental findings. Propagative solutions for the simple one-dimensional, homogeneous case (no scattering) are derived. It is shown that the transmitted pulse consists of an undistorted, damped replica of the incident pulse, plus a depth-dependent, time-extended 'rumble', both of which travel at a fixed, finite velocity through the medium. The constancy of this (signal) velocity reconciles the predicted velocity dispersion with the observed weakness of such an effect in many tissues, and some consequences for the measurement of both velocity and absorption are indicated. |
| Related Links | http://iopscience.iop.org/article/10.1088/0031-9155/25/3/007/pdf |
| Ending Page | 488 |
| Page Count | 8 |
| Starting Page | 481 |
| ISSN | 00319155 |
| e-ISSN | 13616560 |
| DOI | 10.1088/0031-9155/25/3/007 |
| Journal | Physics in Medicine & Biology |
| Issue Number | 3 |
| Volume Number | 25 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1980-05-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Physics in Medicine & Biology Acoustics and Ultrasonics Ultrasound Pulse |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiology, Nuclear Medicine and Imaging Radiological and Ultrasound Technology |
