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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhe-fan Peng Chang Su Wei-jun Lin |
| Copyright Year | 2014 |
| Description | Author affiliation: Inst. of Acoust., Beijing, China (Zhe-fan Peng; Chang Su; Wei-jun Lin) |
| Abstract | In high intensity focused ultrasound (HIFU) therapy, the focusing of acoustic waves in inhomogeneous media is a common and difficult problem to solve. The focusing can be strongly degraded by sound speed variation and density variation from geometrical distortion. The time reverse mirror is a solution to this problem when the target is a reflective one, even when the location of the target is unknown. The iterative time reversal mirror is also used to automatically select the strongest target in a multi-target medium. To simulate the acoustic fields of iterative time reversal mirror and evaluate its convergence, the FEM time-dependent model is used. Three cases of time reversal process in multi-target medium are presented. It is shown that in these three cases, the iterative time reversal process has the ability to focus on the strongest target. And the effectiveness of convergence is discussed in these three cases. |
| Starting Page | 415 |
| Ending Page | 418 |
| File Size | 927709 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781479964253 |
| DOI | 10.1109/SPAWDA.2014.6998613 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-10-30 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | HIFU Ultrasonic imaging Focusing Automatic selection Nonhomogeneous media Transmission line measurements Mirrors Time reversal mirror Acoustic waves |
| Content Type | Text |
| Resource Type | Article |
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