Question 576

{"accessible":false,"alternatives":[{"id":2886,"text":"kerma is always substantially less than the absorbed dose."},{"id":2887,"text":"kerma and absorbed dose are virtually equal."},{"id":2888,"text":"kerma is 100 times the absorbed dose."},{"id":2889,"text":"kerma and absorbed dose are unrelated."},{"id":2890,"text":"kerma is absorbed dose multiplied by a tissue specific factor."}],"archived":false,"correctAlternativeId":2887,"explanation":"\u003cp\u003e\u003cstrong\u003eKerma\u003c/strong\u003e\u0026nbsp;is a measure of energy transferred from radiation to matter and stands for\u0026nbsp;\u003cem\u003ekinetic energy released to matter\u003c/em\u003e. It is related to, but not the same as\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/absorbed-dose\"\u003eabsorbed dose\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eKerma measures the amount of energy that is\u0026nbsp;\u003cstrong\u003etransferred\u003c/strong\u003e\u0026nbsp;from photons to electrons per unit mass at a certain position. Absorbed dose, on the other hand, measures the energy\u0026nbsp;\u003cstrong\u003edeposited\u003c/strong\u003e\u0026nbsp;in a unit mass at a certain position.\u003c/p\u003e\u003cp\u003eAt radiological energies, transfer and deposition of energy is virtually equal.\u003c/p\u003e","id":576,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/784","nextQuestionPath":"/articles/absorbed-dose/questions/495","relatedArticles":[{"id":5104,"title":"Kerma","link":"/articles/kerma?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eAt radiological energies...\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/576"}],"attemptsPercentages":[{"alternativeId":"2890","percentage":18},{"alternativeId":"2886","percentage":10},{"alternativeId":"2888","percentage":5},{"alternativeId":"2887","percentage":57},{"alternativeId":"2889","percentage":9}],"promptToLogin":false,"questionManager":false,"articleId":"absorbed-dose"}