Phase Holographic Imaging PHI AB (PHI) is a Sweden-based company active in the field of medical technology. It develops and markets time-lapse cytometers for clinical applications. The products use holographic microscopy technology, with image sensors capturing light information from objects, and computer processing the information to create visual image. It is also engaged in the development of related software. Its method allows to view and measure living cell over time, without disturbing or destroying it. PHI collaborates with cancer- and stem cell researchers, among others. The Company’s product portfolio includes HoloMonitor M3, a bench-top time-lapse cytometer, and HoloMonitor M4, allowing cell analysis in the cultivation incubator.