Heidrun Wabnitz is a senior scientist at the Department of Biomedical Optics at Physikalisch-Technische Bundesanstalt (PTB) in Berlin. She received her diploma in physics (1979) as well as Dr. rer. nat. degree (1982) from Friedrich Schiller University in Jena. Her fields of work at University of Jena included picosecond spectroscopy of molecules and time-resolved laser scanning microscopy. She joined PTB in 1991 where she focused on medical optical imaging, in particular optical mammography and optical brain imaging. She is active in the development of time-domain instrumentation, modeling and data analysis, performance characterization of instruments, and clinical applications.