Conference paper
Fast super resolution ultrasound imaging using the erythrocytes
Center for Fast Ultrasound Imaging, UltraSound and Biomechanics, Department of Health Technology, Technical University of Denmark1
UltraSound and Biomechanics, Department of Health Technology, Technical University of Denmark2
Department of Health Technology, Technical University of Denmark3
University of Copenhagen4
Copenhagen University Hospital Herlev and Gentofte5
Department of Physics, Technical University of Denmark6
Visual Computing, Department of Applied Mathematics and Computer Science, Technical University of Denmark7
Department of Applied Mathematics and Computer Science, Technical University of Denmark8
Super resolution (SR) imaging is currently conducted using fragile ultrasound contrast agents. This precludes using the full acoustic pressure range, and the distribution of bubbles has to be sparse for them to be isolated for SR imaging. Images have to be acquired over minutes to accumulate enough positions for visualizing the vasculature.
A new method for SUper Resolution imaging using the Erythrocytes (SURE) as targets is introduced, which makes it possible to maximize the emitted pressure for good signal-to-noise ratios. The abundant number of erythrocyte targets make acquisition fast, and the SURE images can be acquired in seconds.
A Verasonics Vantage 256 scanner was used in combination with a GE L8-18iD linear array probe operated at 10 MHz for a wavelength of 150 μm. A 12 emissions synthetic aperture ultrasound sequence was employed to scan the kidney of a Sprague-Dawley rat for 24 seconds to visualize its vasculature. An ex vivo micro-CT image using the contrast agent Microfil was also acquired at a voxel size of 22.6 μm for validating the SURE images.
The SURE image revealed vessels with a size down to 29 μm, five times smaller than the ultrasound wavelength, and the dense grid of vessels in the full kidney was reliably shown for scan times between 1 to 24 seconds. Visually the SURE images revealed the same vasculature as the micro-CT images. SURE images are acquired in seconds rather than minutes without contrast injection for easy clinical use, and they can be measured at full regulatory levels for pressure, intensity, and probe temperature.
Language: | English |
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Publisher: | SPIE - International Society for Optical Engineering |
Year: | 2022 |
Pages: | 1-7 |
Proceedings: | SPIE Medical Imaging 2022 |
Series: | Proceedings of Spie - the International Society for Optical Engineering |
Journal subtitle: | Ultrasonic Imaging and Tomography |
ISBN: | 1510649514 , 1510649522 , 9781510649514 and 9781510649521 |
ISSN: | 24109045 , 16057422 , 1996756x and 0277786x |
Types: | Conference paper |
DOI: | 10.1117/12.2612245 |
ORCIDs: | 0000-0002-9984-3125 , 0000-0002-9380-1688 , Jensen, Jørgen Arendt , Gundlach, Carsten , Kjer, Hans Martin , Dahl, Anders Bjorholm , Stuart, Matthias Bo and Tomov, Borislav Gueorguiev |