1. Radiological Metrology and Biomedical Physics Division National Centre for Nuclear Research, Nuclear Facilities Operations Department, , 7 Andrzeja Sołtana Street, 05-400 Otwock, Poland
2. Warsaw University of Technology Faculty of Mechatronics, Institute of Metrology and Biomedical Engineering, , 8 św. Andrzeja Boboli Street, 02-525 Warsaw, Poland