Conference paper
A novel array processing method for precise depth detection of ultrasound point scatter
Heriot-Watt University1
University of Edinburgh2
Department of Information Technology, Technical University of Denmark3
Department of Electrical Engineering, Technical University of Denmark4
Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark5
Center for Fast Ultrasound Imaging, Centers, Technical University of Denmark6
A signal based algorithm resulting in increased depth resolution is presented for medical ultrasound. It relies on multiple foci beamforming that is enabled by current ultrasound imaging systems. The concept stems from optical microscopy and is translated here into ultrasound using the Field II simulation software.
A 7 MHz linear transducer is used to scan a single point scatterer phantom that can move in the axial direction. Individual beamformer outputs from 3 different foci are post-processed using the highly-dependent on focusing errors, metric of sharpness to estimate the position of the point scatter. A 37.8 μm uncertainty in depth estimation is achieved, which attains an almost 3-fold improvement compared to conventional ultrasound imaging axial resolution.
Future work on the development of this algorithm requires experimental validation in tissue-like materials that provide strong aberrations.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2016 |
| Pages: | 669-673 |
| Proceedings: | 2016 IEEE International Conference on Acoustics, Speech, and Signal Processing |
| ISBN: | 1479999873 , 1479999881 , 147999989X , 147999989x , 9781479999873 , 9781479999880 and 9781479999897 |
| ISSN: | 2379190x and 15206149 |
| Types: | Conference paper |
| DOI: | 10.1109/ICASSP.2016.7471759 |
| ORCIDs: | Jensen, Jørgen Arendt |
