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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gueth, P. Blanchard, R. Liebgott, H. Basset, O. |
| Copyright Year | 2010 |
| Description | Author affiliation: Université de Lyon, CREATIS-LRMN; CNRS UMR5220; Inserm U630; INSA-Lyon Lyon, France (Gueth, P.) || Universite Lyon 1 Lyon, France (Blanchard, R.; Liebgott, H.; Basset, O.) |
| Abstract | Ultrasound Fourier imaging was first initiated by Jian-yu Lu during the 90's. Using this method, one can compute an ultrasound image using a single emission, allowing a very high frame rate (up to 10000 frames per second). The main limitation of this method is the presence of geometrical artifacts, which tend to reduce the image resolution. In this study, we propose to use steered plane waves in reception instead of spherical waves as in [1]. This helps sampling the non-null part of the ultrasound spectrum with finer resolution, while reducing the presence of artifacts. A plane wave is emitted. Back-scattered signals are measured using multiple steered plane waves. Those signals 1D spectrum contain spatial information merged to create the 2D ultrasound image spectrum. Due to axial modulation, this 2D spectrum features 2 symmetric lobes. The image resolution increases when using plane waves instead of spherical waves because the sampling of these lobes is easier. The PSF size is measured both in simulation and experimentally for each method. For conventional imaging technique, this size is 155 by 311µm in axial and transverse directions. Standard Fourier imaging leads to a size of 156 by 279µm. With our spectral imaging, this size is 154µm in axial direction and 252µm in transverse direction. Using steered plane wave in a Fourier imaging framework increases the beamformed image resolution, especially in the transverse direction when compared to other beamforming methods. |
| Starting Page | 1735 |
| Ending Page | 1738 |
| File Size | 1048028 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781457703829 |
| ISSN | 19485727 |
| e-ISBN | 9781457703812 |
| DOI | 10.1109/ULTSYM.2010.5935714 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-10-11 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Imaging Ultrasonic imaging Array signal processing Image resolution Acoustics Fourier transforms Probes Fourier beamforming ultrasound resolution spectral beamforming |
| Content Type | Text |
| Resource Type | Article |
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