Whole-body visualization of nanoagent kinetics in mice with flash scanning volumetric optoacoustic tomography

Sandeep Kumar Kalva; Avihai Ron; Vijitha Periyasamy; Michael Reiss; Xosé Luís Deán-Ben; Daniel Razansky

doi:10.1117/12.2577844

5 March 2021 Whole-body visualization of nanoagent kinetics in mice with flash scanning volumetric optoacoustic tomography

Sandeep Kumar Kalva, Avihai Ron, Vijitha Periyasamy, Michael Reiss, Xosé Luís Deán-Ben, Daniel Razansky

Author Affiliations +

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 116420A (2021) https://doi.org/10.1117/12.2577844
Event: SPIE BiOS, 2021, Online Only

Abstract

Visualizing whole-body dynamics across entire living organisms is crucial for understanding complex biology, disease progression as well as evaluating efficacy of new drugs and therapies. Existing small animal functional and molecular imaging modalities either suffer from low spatial and temporal resolution, limited penetration depth or poor contrast. In this work, we present flash scanning volumetric optoacoustic tomography (fSVOT) imaging system that enables the acquisition speeds required for visualizing fast kinetics and biodistribution of optical contrast agents across whole mice. fSVOT can render images of intricate vascular and organ anatomy with rich contrast by capitalizing on the large angular coverage of a spherical matrix array transducer rapidly scanned around the mouse. Volumetric (three-dimensional) images with 200 µm resolution can be acquired within 45 seconds, which corresponds to an imaging speed gain of an order of magnitude with respect to existing state-of-the-art modalities offering comparable resolution performance. We demonstrate volumetric tracking and quantification of gold nanorod kinetics and their differential uptake across the spleen, liver and kidneys. Overall, fSVOT offers unprecedented capabilities for multi-scale imaging of pharmacokinetics and bio-distribution of agents with high contrast, resolution and image acquisition speed.

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Citation Download Citation

Sandeep Kumar Kalva, Avihai Ron, Vijitha Periyasamy, Michael Reiss, Xosé Luís Deán-Ben, and Daniel Razansky "Whole-body visualization of nanoagent kinetics in mice with flash scanning volumetric optoacoustic tomography", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 116420A (5 March 2021); https://doi.org/10.1117/12.2577844

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