VoluScan™ is a fluorescent mesoscope that enables 1- or 2-color functional imaging of large sample volumes at a cellular resolution. VoluScan™ is designed to image fluorescent sensors (like GCaMP, jRGECO, dLight, etc.) in organoids, assembloids, brain slices, and cell cultures, but can also be used to study cell migration, division, or other processes. Furthermore, the system is compatible with Tokai Hit incubation chamber and can synchronize imaging with other systems using external digital triggers. Thus, VoluScan™ pairs readily with Light Sources (for optogenetics or uncaging), electrophysiology recordings, liquid infusion, etc. VoluScan™ has an extensive field of view (up to 5 mm) with subcellular resolution (2 µm), and covers a large depth (up to 1.5 mm). Specifically, the VoluScan™'s multi-plane imaging system enables scanning such volumes at high sampling rates.