Democratization of Real-time Multi-Spectral Photoacoustic Imaging: Open-Sourced System Architecture for OPOTEK Phocus & Verasonics Vantage Combination

2026-04-16

AI Summary

This work addresses the synchronization instability commonly encountered in real-time multispectral photoacoustic imaging (RT-mPAI) when employing rapidly tunable lasers alongside data acquisition platforms based on non-real-time operating systems, such as OPOTEK Phocus and Verasonics Vantage. To overcome this limitation, the authors propose an open-source hardware-software architecture that leverages a dedicated microcontroller to generate deterministic laser trigger counts and implements a decoupled client–server data streaming framework. This design effectively mitigates timing jitter induced by the host operating system and alleviates local storage bottlenecks. The proposed solution establishes, for the first time, a low-latency and highly stable synchronization mechanism for this widely used hardware combination, substantially lowering both technical and financial barriers and thereby facilitating broader adoption of RT-mPAI and fostering an open research community.

Technology Category

• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Computer Vision: Multi-modal Vision
• Machine Learning: Hardware-aware ML

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Data management and stream processing for Web, mobile and wireless applications
• Security and Privacy: Data transparency and provenance
• User Modeling, Personalization and Recommendation: On-Device user modeling, personalization, and recommendation

Abstract

Real-time multi-spectral photoacoustic imaging (RT-mPAI) often suffers from synchronization instabilities when interfacing fast-tuning lasers with data acquisition platforms executing on non-real-time operating systems. To overcome this, we establish an open-source hardware-software architecture tailored for the widely adopted combination of the OPOTEK Phocus lasers and Verasonics Vantage systems. By employing an independent micro-controller for deterministic laser trigger counting alongside a decoupled client-server data streaming framework, the proposed system circumvents OS-induced timing deviations and local storage bottlenecks. By open-sourcing this pipeline and cultivating a collaborative environment to share both code and ideas, we aim to lower the technical and cost barriers for RT-mPAI, thereby democratizing access to stable RT-mPAI research and, more ambitiously, fostering a vibrant open-source community.

Problem

• real-time multi-spectral photoacoustic imaging
• synchronization instability
• non-real-time operating systems
• laser-data acquisition interfacing

Innovation

• real-time multi-spectral photoacoustic imaging
• open-source architecture
• laser-trigger synchronization
• client-server streaming
• deterministic timing control