Question 2442
{"accessible":false,"alternatives":[{"id":12003,"text":"amplitude"},{"id":12002,"text":"frequency"},{"id":12004,"text":"velocity"},{"id":12001,"text":"wavelength"}],"archived":false,"correctAlternativeId":12003,"explanation":"\u003cp\u003eAmplitude refers to the strength of the sound, it is directly related to power. An increased amplitude will result in increased power, hence increasing the thermal index, causing heating of the tissue.\u003c/p\u003e","id":2442,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2837","nextQuestionPath":"/articles/thermal-index/questions/30","relatedArticles":[],"alsoUsedIn":[{"id":1358,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1358","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1358"},{"id":1200,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1200","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1200"},{"id":248,"kind":"LiveSchedule","title":"248","link":"https://radiopaedia.org/admin/live_schedules/248"},{"id":172,"kind":"LiveSchedule","title":"172","link":"https://radiopaedia.org/admin/live_schedules/172"},{"id":1313,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1313","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1313"},{"id":1313,"kind":"Course","title":"Imaging Physics Lectures - page 1313","link":"https://radiopaedia.org/courses/imaging-physics-lectures/pages/1313"}],"stem":"\u003cp\u003eFrom an ultrasound safety aspect, what should be kept as low as reasonably achievable (ALARA)?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/2442"}],"attemptsPercentages":[{"alternativeId":"12002","percentage":32},{"alternativeId":"12001","percentage":7},{"alternativeId":"12004","percentage":5},{"alternativeId":"12003","percentage":57}],"promptToLogin":false,"questionManager":false,"articleId":"thermal-index"}