Photoacoustic (PA) and thermoacoustic (TA) imaging can share a set of data acquisition processing system, in addition to different excitation sources. In this paper, reflection mode PA/TA dual modality based on hollow concave array is proposed. The signals are excited through the holes by using optical fiber dipole antenna, respectively. light, microwave received ultrasonic coaxial, forming mod...

Human intelligence is multimodal; we integrate visual, linguistic, and acoustic signals to maintain a holistic worldview. Most current pretraining methods, however, are limited one or two modalities. We present i-Code, self-supervised framework where users may flexibly combine the modalities of vision, speech, language into unified general-purpose vector representations. In this framework, data...