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Development of a high-resolution photoacoustic imager


Photoacoustic microvascular image of the finger [1]

Photoacoustic imaging enables the optical properties of tissues to be imaged beyond the light-scattering limit.

In particular, this emerging modality makes it possible to visualize blood vessels in 3D with excellent resolution. The aim of this project is to develop a high-speed, high-resolution (50 µm) photoacoustic imaging system for the fingers of the hand. The system comprises an optical part, with the shaping of the ideal illumination, an acoustic part, with the optimization of the sensor, and an instrumental control part. In a second part, this device will be used to image different samples, enabling the system to be compared with another modality.

Students will become familiar with the physics of photoacoustic imaging, lasers and optical and acoustic instrumentation. A taste for programming and signal processing (MATLAB, Python) is desirable. This work may lead to a PhD offer.

[1] Subochev, Pavel, et al., Laser Physics Letters 15.4 (2018): 045602.


Bastien ARNAL
OPTIMA team (bastien[dot]arnal[at]univ-grenoble-alpes[dot]fr)

Submitted on February 13, 2024

Updated on February 13, 2024