Question 84
{"accessible":false,"alternatives":[{"id":430,"text":"1.30 ppm"},{"id":431,"text":"2.60 ppm"},{"id":432,"text":"3.00 ppm"},{"id":433,"text":"3.20 ppm"},{"id":434,"text":"3.50 ppm"}],"archived":false,"correctAlternativeId":433,"explanation":"\u003cp\u003eCholine\u0026nbsp;is a precursor of acetylcholine (ACH), a component of cell membranes which is commonly examined in\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/mr-spectroscopy-1\"\u003eMR spectroscopy\u003c/a\u003e. It resonates at 3.2 ppm chemical shift.\u003c/p\u003e\u003cp\u003eIt is a marker of cellular membrane turnover and therefore elevated in\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/brain-tumours\"\u003eneoplasms\u003c/a\u003e, demyelination and gliosis. In the setting of\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/missing?article%5Btitle%5D=gliomas\"\u003egliomas\u003c/a\u003e,\u0026nbsp;elevated choline beyond the margins of contrast enhancement is suggestive of further extension of the neoplastic cells.\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e","id":84,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/85","nextQuestionPath":"/articles/lactate-peak/questions/83","relatedArticles":[{"id":27824,"title":"Creatine peak","link":"/articles/creatine-peak?lang=us"},{"id":27823,"title":"Choline peak","link":"/articles/choline-peak?lang=us"},{"id":13185,"title":"Myo-inositol peak","link":"/articles/myo-inositol-peak-1?lang=us"},{"id":27832,"title":"Citrate peak","link":"/articles/citrate-peak?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eIn MR spectroscopy choline resonate at:\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/84"}],"attemptsPercentages":[{"alternativeId":"431","percentage":23},{"alternativeId":"433","percentage":52},{"alternativeId":"432","percentage":15},{"alternativeId":"430","percentage":4},{"alternativeId":"434","percentage":6}],"promptToLogin":false,"questionManager":false,"articleId":"lactate-peak"}