Jean Michel Létang received his Doctor of Philosophy in Signal-Image Processing from the Grenoble Institute of Technology, Grenoble, in 1993. He worked as a Research Associate at INRS-Telecom, Montréal, Canada in 1993-1994, at Institut National de Recherche en Informatique et Automatique, Grenoble, France in 1995, and as a research engineer at Philips Research Laboratories, Paris in 1996-1999. Since 1999, he has been an Associate Professor at CREATIS laboratory (CNRS 5220, INSERM U1206, INSA Lyon, Université de Lyon). His main research interests are Monte Carlo techniques for particle transport in medical imaging and dosimetry.