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Supersolutions in Ultrasound Imaging

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.

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