Editing Ultrasound (section)

==Safety==
Occupational exposure to ultrasound in excess of 120&nbsp;dB may lead to hearing loss. Exposure in excess of 155&nbsp;dB may produce heating effects that are harmful to the human body, and it has been calculated that exposures above 180&nbsp;dB may lead to death.<ref>{{cite book|title=Guidelines for the Safe Use of Ultrasound Part II{{Snd}} Industrial & Commercial Applications{{Snd}} Safety Code 24|url=http://www.hc-sc.gc.ca/ewh-semt/pubs/radiation/safety-code_24-securite/health-sante-eng.php#a2.2|isbn=978-0-660-13741-4|year=1991|publisher=Health Canada|author1=Part II, industrial|author2=commercial applications|archive-url=https://web.archive.org/web/20130110213842/http://www.hc-sc.gc.ca/ewh-semt/pubs/radiation/safety-code_24-securite/health-sante-eng.php#a2.2|archive-date=2013-01-10}}</ref> The UK's independent Advisory Group on Non-ionising Radiation (AGNIR) produced a report in 2010, which was published by the UK Health Protection Agency (HPA). This report recommended an exposure limit for the general public to airborne ultrasound sound pressure levels (SPL) of 70&nbsp;dB (at 20&nbsp;kHz), and 100&nbsp;dB (at 25&nbsp;kHz and above).<ref>{{cite book|title=Health Effects of Exposure to Ultrasound and Infrasound|year=2010|publisher=Health Protection Agency, UK.|url=http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1265028759369|author=AGNIR|pages=167–170|access-date=2011-11-16|archive-url=https://web.archive.org/web/20111108194756/http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1265028759369|archive-date=2011-11-08|url-status=live}}</ref>

In [[medical ultrasound]], guidelines exist to prevent inertial cavitation from happening. The risk of inertial cavitation damage is expressed by the [[mechanical index]].