Advanced Therapeutic and Rehabilitation Engineering laboratory (ATRE Lab.) is multi-disciplinary research center working on "Computer-aided Surgery" and "Rehabilitation Engineering." Our primary focus is to develop robotic device and computer programs to assist physicians to conduct minimally invasive surgery. In rehabilitation engineering, our objective is assist the elderly and the physically challenged with robotically enhanced assisting devices. The laboratory is part of Department of Mechano-Informatics, Graduate school of Information Science and Technology, the University of Tokyo.