February 6th, 2023 at 12.00h – Novel signal-detection approaches in optoacoustic tomography

Categories: Activitats, International Research Seminars, Notícies


Novel signal-detection approaches in optoacoustic tomography

By, Dr. Amir Rosenthal, Electrical and Computer Engineering Department, Technion—Israel Institute of Technology, Haifa 3200003, Israel

Date and Venue: February 6th, 2023 at 12.00h – Sala de Graus Eduard Fontseré (Faculty of Physics UB)

(Chaired by, Prof. Martí Duocastella, IN²UB)


Optoacoustic (photoacoustic) tomography (OAT) is a hybrid imaging modality that enables high-resolution optical imaging at depths that exceed the optical diffusion limit by combining optical excitation with acoustic detection. To achieve its full potential, OAT requires a new generation of detection technologies that accommodate its unique features: weak signals, high signal directionality, and wide acoustic spectra.

In this talk, I will discuss two techniques recently developed by my group for the detection of acoustic signals in OAT. In the first technique, a novel acoustic detector was developed in a silicon-photonics platform, achieving a record-high resolution of <20 µm, previously achieved only in optoacoustic microscopy setups. In the second technique, we developed cyclic acoustic masks that enable the application of signal-pixel imaging, facilitating semi-isotropic resolution and sensitivity enhancement.