• Survey on limiting exposure to ultrasound 

      Toivo, Tim; Orreveteläinen, Pasi; Kännälä, Sami; Toivonen, Tommi
      STUK-TR : 26 : 26 (Säteilyturvakeskus, 2017)
      Ultrasound refers to sound with frequencies higher than the upper audible limit of human hearing. Ultrasound is utilized for many purposes in medicine, beauty care, industry and consumer products. In the past years, the ...