Question 620
{"accessible":false,"alternatives":[{"id":3111,"text":"Compton scatter, at energies greater than 25 keV"},{"id":3112,"text":"Compton scatter, at energies greater than 50 keV"},{"id":3110,"text":"photoelectric effect, at energies greater than 50 keV"},{"id":3109,"text":"photoelectric effect, at energies greater than 75 keV"}],"archived":false,"correctAlternativeId":3112,"explanation":"\u003cp\u003eThe total attenuation for bone is greater than for muscle, at all except the higher X-ray energies. Attenuation due to the photoelectric effect decreases almost linearly with energy and becomes less dominant than Compton scatter above about 40 keV. Coherent scatter forms quite a small percentage of the total attenuation.\u003c/p\u003e\u003cp\u003eAdapted from\u0026nbsp;\u003ca href=\"https://en.wikibooks.org/wiki/Basic_Physics_of_Digital_Radiography\"\u003eBasic Physics of Digital Radiography\u003c/a\u003e\u0026nbsp;by\u0026nbsp;Kieran Maher,\u0026nbsp;with author's permission (License:\u0026nbsp;\u003ca href=\"https://creativecommons.org/licenses/by-sa/3.0/\"\u003eCreative Commons\u0026nbsp;BY-SA 3.0\u003c/a\u003e).\u003c/p\u003e","id":620,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2748","nextQuestionPath":"/articles/coherent-scattering/questions/489","relatedArticles":[{"id":29684,"title":"Photoelectric effect","link":"/articles/photoelectric-effect?lang=us"},{"id":30308,"title":"Compton effect","link":"/articles/compton-effect?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eFor bone, x-ray attenuation is predominantly due to...\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/620"}],"attemptsPercentages":[{"alternativeId":"3112","percentage":33},{"alternativeId":"3111","percentage":16},{"alternativeId":"3109","percentage":18},{"alternativeId":"3110","percentage":33}],"promptToLogin":false,"questionManager":false,"articleId":"coherent-scattering"}