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Single Versus Multi-channel Dispersion Analysis of Ultrasonic Guided Waves Propagating in Long Bones
| Content Provider | SAGE Publishing |
|---|---|
| Author | Tho N. H. T. Tran He, Feng Zhang, Zhenggang Sacchi, Mauricio D. Ta, Dean Le, Lawrence H. |
| Copyright Year | 2021 |
| Abstract | Ultrasonic guided wave techniques have been applied to characterize cortical bone for osteoporosis assessment. Compared with the current gold-standard X-ray-based diagnostic methods, ultrasound-based techniques pose some advantages such as compactness, low cost, lack of ionizing radiation, and their ability to detect the mechanical properties of the cortex. Axial transmission technique with a source-receiver offset is employed to acquire the ultrasound data. The dispersion characteristics of the guided waves in bones are normally analyzed in the transformed domains using the dispersion curves. The transformed domain can be time-frequency map using a single channel or wavenumber-frequency (or phase velocity-frequency) map with multi-channels. In terms of acquisition effort, the first method is more cost- and time-effective than the latter. However, it remains unclear whether single-channel dispersion analysis can provide as much quantitative guided-wave information as the multi-channel analysis. The objective of this study is to compare the two methods using numerically simulated and ex vivo data of a simple bovine bone plate and explore their advantages and disadvantages. Both single- and multi-channel signal processing approaches are implemented using sparsity-constrained optimization algorithms to reinforce the focusing power. While the single-channel data acquisition and processing are much faster than those of the multi-channel, modal identification and analysis of the multi-channel data are straightforward and more convincing. |
| Related Links | https://journals.sagepub.com/doi/pdf/10.1177/01617346211006660?download=true |
| Starting Page | 157 |
| Ending Page | 163 |
| Page Count | 7 |
| ISSN | 01617346 |
| Issue Number | 3 |
| Volume Number | 43 |
| Journal | Ultrasonic Imaging (UIX) |
| e-ISSN | 10960910 |
| DOI | 10.1177/01617346211006660 |
| Language | English |
| Publisher | Sage Publications CA |
| Publisher Date | 2021-04-12 |
| Publisher Place | Los Angeles |
| Access Restriction | Open |
| Rights Holder | © The Author(s) 2021 |
| Subject Keyword | cortical bone dispersion axial transmission ultrasonic guided waves phase/group velocity |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiology, Nuclear Medicine and Imaging Radiological and Ultrasound Technology |
