Yohan Payan is Director of Research at the French National Center for Scientific Research (CNRS). In 1997, he received an award from the University of Grenoble for his doctoral research on the biomechanics of speech production. In 2012, the French Biomechanics Society awarded him the Senior Prize for his research on the biomechanics for computer-assisted surgery. His main research interests concern the biomechanical modeling of soft tissues and their integration into medical devices used to assist surgeons for planning or to guide them during surgery. The corresponding applications concern plastic and maxillofacial surgery, breast cancer treatment, neurosurgery, orthopedics and pressure ulcer prevention, based on organs or musculoskeletal models. He was a Research Affiliate at the Massachusetts Institute of Technology (1999, Boston, USA) and visiting professor at University of Chile (2004, Santiago de Chile) and University of British Columbia (2010, Vancouver, Canada). Yohan Payan is the co-head of the Biomechanics TIMC research team (Univ. Grenoble Alpes) and the Associate Editor of the Clinical Biomechanics journal (Elsevier).Jacques Ohayon is Professor of Mechanics at the Engineering school Polytech, Univ. Savoie Mont-Blanc, France. From 1985 to 1988, he was visiting fellow at the Biomedical Engineering Branch of the National Institutes of Health (NIH), Bethesda MD, USA. He received the 1998 Junior Prize of the French Biomechanics Society (SB) for his research on the biomechanics of the left ventricle. His current research focuses on the biomechanics of atherosclerotic plaque and the development of new clinical tools for imaging the elasticity of vulnerable plaques. From 2006 to 2007, he was visiting professor at the National Institute of Biomedical Imaging and Bioengineering at the NIH, USA. Jacques Ohayon was the Chairman of the SB, which also awarded him the Senior Prize in 2016 for his work on the biomechanics of coronary plaque rupture. In 2020, he was a visiting professor at Texas A & M University and conducted his research in the field of endothelial cell mechanobiology at the Houston Methodist Research Institute (HMRI). Since 2020, he is also Adjunct Professor of Cardiovascular Sciences at HMRI, Texas, USA.