Title :
Bioeffects and safety of low frequency ultrasound
Author :
Nagel, M. ; Nagel, J.H.
Author_Institution :
Inst. of Biomed. Technol., Stuttgart Univ., Germany
Abstract :
Bioeffects and safety of US have long been a concern and have been thoroughly investigated for high frequency US used in medical procedures. With increasing applications of low frequency ultrasound (LFUS, 20-100 kHz), it has become imperative to expand safety considerations to cover this frequency range. The authors have investigated the biological effects of LFUS on human blood, suspended cultured cells and the auditory system of guinea pigs to establish safe limits of exposure, which, according to current results, are consistent with the established limits at both ends of the frequency range, namely audible sound and high frequency diagnostic/therapeutic medical US
Keywords :
biological effects of acoustic radiation; blood; cellular effects of radiation; ear; ear protection; ultrasonic effects; 20 to 100 kHz; auditory system; biological effects; cavitation; cochlear hair cells; dose/effect curves; guinea pigs; human blood; low frequency ultrasound; safe limits of exposure; safety considerations; suspended cultured cells; Auditory system; Biomembranes; Blood; Cells (biology); DNA; Frequency; Humans; Medical diagnostic imaging; Safety; Ultrasonic imaging;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804208
