Question 759
{"accessible":false,"alternatives":[{"id":3852,"text":"no effect"},{"id":3853,"text":"transient erythema"},{"id":3854,"text":"skin damage over the irradiated area with no healing after several months"},{"id":3855,"text":"hematopoietic syndrome, with initial nausea and headache followed by symptoms associated with pancytopaenia"},{"id":3856,"text":"gastrointestinal syndrome, with abdominal cramps, diarrhea and emesis due to destruction of intestinal mucosa"}],"archived":false,"correctAlternativeId":3854,"explanation":"\u003cp\u003eThe key point about this question is that high dosages have different effects depending on whether it is a whole body exposure or partial skin exposure. This case refers to a partial skin exposure (thorax).\u003c/p\u003e\u003cp\u003eTransient erythema is seen when doses of over 2 Gy are delivered to a region of tissue.\u003c/p\u003e\u003cp\u003eThe hematopoietic and gastrointestinal syndromes occur as part of\u0026nbsp;\u003ca href=\"/articles/acute-radiation-syndrome\"\u003eacute radiation syndrome\u003c/a\u003e, with whole body exposures of between 0.5 - 10 Gy and greater than 12 Gy respectively.\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":759,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/774","nextQuestionPath":"/articles/deterministic-effects/questions/719","relatedArticles":[{"id":52566,"title":"Radiation protection","link":"/articles/radiation-protection?lang=us"},{"id":52598,"title":"Entrance skin dose","link":"/articles/entrance-skin-dose?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eA hypothetical patient receives an entrance skin dose of 20 Gy after a cardiac pacemaker insertion. The most likely effect is which of the following?\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/759"}],"attemptsPercentages":[{"alternativeId":"3854","percentage":53},{"alternativeId":"3855","percentage":9},{"alternativeId":"3853","percentage":18},{"alternativeId":"3856","percentage":9},{"alternativeId":"3852","percentage":10}],"promptToLogin":false,"questionManager":false,"articleId":"deterministic-effects"}