Compression-tracking photoacoustic perfusion and microvascular pressure measurements

Min Choi; Roger Zemp

doi:10.1117/12.2253287

3 March 2017 Compression-tracking photoacoustic perfusion and microvascular pressure measurements

Min Choi, Roger Zemp

Proceedings Volume 10064, Photons Plus Ultrasound: Imaging and Sensing 2017; 100643R (2017) https://doi.org/10.1117/12.2253287
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

We propose a method to measure blood pressure of small vessels non-invasively and in-vivo: by combining PA imaging with compression US. Using this method, we have shown pressure-lumen area tracking, as well as estimation of the internal vessel pressure, located 2 mm deep in tissue. Additionally, reperfusion can be tracked by measuring the total PA signal within a region of interest (ROI) after compression has been released. The ROI is updated using cross-correlation based displacement tracking¹. The change in subcutaneous perfusion rates can be seen when the temperature of the hand of a human subject drops below the normal.

Citation Download Citation

Min Choi and Roger Zemp "Compression-tracking photoacoustic perfusion and microvascular pressure measurements", Proc. SPIE 10064, Photons Plus Ultrasound: Imaging and Sensing 2017, 100643R (3 March 2017); https://doi.org/10.1117/12.2253287

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