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Supersolutions in Ultrasound Imaging
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Institution: |
Focused Ultrasound Laboratory, Department of Radiology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA USA |
Publisher: |
IEEE Symposium on Biomedical Imaging ISBI 2009 |
Publication Date: |
Jun-2009 |
Citation: |
Proceedings of the 6th IEEE International Symposium on Biomedical Imaging: From Nano to Macro 2009; |
Keywords: |
Ultrasound, Super-resolution |
Appears in Collections: |
FUS, NCIGT |
Sponsors: |
NIH U41 RR019703 |
Generated Citation: |
Clement G.T. Supersolutions in Ultrasound Imaging. Proceedings of the 6th IEEE International Symposium on Biomedical Imaging: From Nano to Macro 2009; |
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Ultrasound techniques for imaging objects significantly smaller than the source wavelength are investigated. The present overview explains two such methods that are being investigated in our laboratory. The first method is designed for detecting scattering using an unfocused ultrasound field created from a continuously-driven source array. The frequency of each element on the array is unique, resulting in a field that is highly variant as a function of both time and position. The scattered signal is then received by a single receiving line and reconstructed. The second method uses a more "traditional" superresolution reconstruction approach, which recovers spatial frequencies above the spatial bandwidth through analysis of the spatial frequency spectrum. In both cases reconstruction of objects at least an order of magnitude smaller than the signal wavelength can be achieved.
Additional Material
1 File (52.285kB)
Clement-ISBI2009-fig1.jpg (52.285kB)
