Question 2085
{"accessible":false,"alternatives":[{"id":10350,"text":"2 hours"},{"id":10351,"text":"6 hours"},{"id":10352,"text":"10 hours"},{"id":10353,"text":"18 hours"},{"id":10354,"text":"36 hours"}],"archived":false,"correctAlternativeId":10353,"explanation":"\u003cp\u003eA cardiac fasting protocol to suppress myocardial uptake typically involves a low carbohydrate\u0026nbsp;diet for 1 day followed by an extended 18 hour fast, this switches the heart\u0026nbsp;from using glucose to fatty acids. Good myocardial suppression helps to identify pathological uptake within the heart.\u003c/p\u003e","id":2085,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2114","nextQuestionPath":"/articles/f-18-fluorodeoxyglucose/questions/2083","relatedArticles":[{"id":9146,"title":"Sarcoidosis (cardiac manifestations)","link":"/articles/sarcoidosis-cardiac-manifestations-1?lang=us"}],"alsoUsedIn":[{"id":922,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 922","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/922"},{"id":922,"kind":"Course","title":"2021 Virtual Conference Private Use - page 922","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/922"},{"id":922,"kind":"Course","title":"Nuclear Medicine Lectures - page 922","link":"https://radiopaedia.org/courses/nuclear-medicine-lectures/pages/922"}],"stem":"\u003cp\u003eIn cardiac PET-CT, when using F-18 FDG to investigate cardiac sarcoid, a cardiac fasting protocol is used to switch myocardial metabolism from glucose to fatty acids. How long should the patient fast for?\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/2085"}],"attemptsPercentages":[{"alternativeId":"10352","percentage":11},{"alternativeId":"10353","percentage":55},{"alternativeId":"10354","percentage":6},{"alternativeId":"10351","percentage":22},{"alternativeId":"10350","percentage":5}],"promptToLogin":false,"questionManager":false,"articleId":"f-18-fluorodeoxyglucose"}