Question 2825
{"accessible":false,"alternatives":[{"id":13789,"text":"increase peripheral beam intensity"},{"id":13790,"text":"increase pulse damping"},{"id":13791,"text":"increase transducer element width"},{"id":13792,"text":"switching from pulse echo to continuous ultrasound"}],"archived":false,"correctAlternativeId":13790,"explanation":"\u003cp\u003eSide lobe intensity can be reduced in the following ways:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003ereduce the intensity of waves generated at the periphery of the transducer\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003edecrease transducer element width\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003euse a lower quality factor wave\u003c/p\u003e\u003c/li\u003e\n\u003c/ul\u003e\u003cp\u003e\u003cstrong\u003eDamping reduces quality factor.\u003c/strong\u003e\u003c/p\u003e\u003cp\u003ePulse echo ultrasound has a lower quality factor than continuous ultrasound.\u003c/p\u003e","id":2825,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2833","nextQuestionPath":"/articles/spectral-doppler-ultrasound/questions/2822","relatedArticles":[{"id":47372,"title":"Side lobe artifact","link":"/articles/side-lobe-artifact-2?lang=us"},{"id":54038,"title":"Ultrasound transducer","link":"/articles/ultrasound-transducer?lang=us"}],"alsoUsedIn":[{"id":1615,"kind":"RestrictedPage","title":"Page 1615 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1615"},{"id":1979,"kind":"Course","title":"Imaging Physics: Ultrasound Peer Review - page 1979","link":"https://radiopaedia.org/courses/imaging-physics-ultrasound-peer-review/pages/1979"},{"id":1979,"kind":"Course","title":"Imaging Physics: Ultrasound - page 1979","link":"https://radiopaedia.org/courses/imaging-physics-ultrasound/pages/1979"}],"stem":"\u003cp\u003eWhich of the following will reduce side lobe intensity?\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/2825"}],"attemptsPercentages":[{"alternativeId":"13790","percentage":69},{"alternativeId":"13789","percentage":8},{"alternativeId":"13792","percentage":9},{"alternativeId":"13791","percentage":14}],"promptToLogin":false,"questionManager":false,"articleId":"spectral-doppler-ultrasound"}