Question 2191
{"accessible":false,"alternatives":[{"id":10874,"text":"It detects single gamma rays produced following the collision of a positron with a\r\nnegative beta particle"},{"id":10875,"text":"The radionuclides used in PET are normally produced in a cyclotron"},{"id":10876,"text":"It provides detailed anatomical information"},{"id":10877,"text":"Scintillation detectors are usually made of NaI"}],"archived":false,"correctAlternativeId":10875,"explanation":"\u003cp\u003eThe tracer used most commonly is glucose labeled with Fl-18 (18-FDG),which has a very short half-life.\u0026nbsp;Generators can also be used to produce\u0026nbsp;radionuclides, for example the Ge-68/Ga-68 generator.\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e","id":2191,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2191","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[],"stem":"\u003cp\u003eWhich of the following are true with regard to positron emission tomography (PET)\u0026nbsp;:\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/2191"}],"attemptsPercentages":[{"alternativeId":"10876","percentage":6},{"alternativeId":"10875","percentage":53},{"alternativeId":"10874","percentage":26},{"alternativeId":"10877","percentage":15}],"promptToLogin":false,"questionManager":false,"articleId":"nuclear-medicine"}