Institutional responsibilities • Vice-director, Institute of Radiation Physics, Lausanne, Switzerland • Group Leader, Institute of Radiation Physics, Lausanne, Switzerland: • State appointed leader of a verification laboratory active in ionizing radiation measuring instruments (radiation protection, radiotherapy, nuclear medicine) • Leader of the designated national metrology institute for the unit of activity (Bq) • Leader of an state approved personal dosimetry service • State appointed manager of interlaboratory comparison in the field of gamma spectrometry, radionuclide calibrators, uncertainty evaluation, and radiotherapy • Radiometrology support for the University hospitals of Lausanne IRA’s radiometrology group and Claude Bailat, its leader for over 15 years, are well recognized by the radiometrology community as well as stake holders in nuclear medicine, radiotherapy, medical physics and radiation protection. This recognition was achieved thanks to the synergy of the primary and secondary calibration laboratory (Eichstelle I02 certified by the State) fostered by Claude Bailat. The group of radiometrology has provided various research, support and consulting services to the ionizing radiation community. This synergy between radiometrology various fields is a unique asset for the university hospital of Lausanne, and IRA has developed the knowledge and equipment required of a top radiometrology institute. The group of radiometrology at IRA aims at reaching a high level of metrology and promotes the use of the scientific method.