Question 83
{"accessible":false,"alternatives":[{"id":425,"text":"1.30 ppm"},{"id":426,"text":"2.60 ppm"},{"id":427,"text":"3.00 ppm"},{"id":428,"text":"3.20 ppm"},{"id":429,"text":"3.50 ppm"}],"archived":false,"correctAlternativeId":425,"explanation":"\u003cp\u003eLactate\u0026nbsp;is one of the more important compounds assessed on\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/mr-spectroscopy-1\"\u003eMR spectroscopy\u003c/a\u003e, and resonates at 1.3 ppm chemical shift, with a characteristic double peak at long TEs.\u003c/p\u003e\u003cp\u003eIt is a marker of anaerobic metabolism with no peak seen in normal spectra. It is therefore elevated in necrotic areas (e.g.\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/glioblastoma\"\u003ehigher grade tumors\u003c/a\u003e) and infections (\u003ca href=\"https://radiopaedia.org/articles/brain-abscess-1\"\u003ecerebral abscess\u003c/a\u003e). An elevated lactate peak may also be seen in the setting of diffuse axonal injury. In which case, it is associated with a worse prognosis.\u003c/p\u003e","id":83,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/85","nextQuestionPath":null,"relatedArticles":[{"id":27830,"title":"Lactate peak","link":"/articles/lactate-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 lactate will 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/83"}],"attemptsPercentages":[{"alternativeId":"428","percentage":11},{"alternativeId":"425","percentage":57},{"alternativeId":"426","percentage":16},{"alternativeId":"427","percentage":9},{"alternativeId":"429","percentage":6}],"promptToLogin":false,"questionManager":false,"articleId":"creatine-peak"}