Question 1492
{"accessible":false,"alternatives":[{"id":7454,"text":"cortical and/or juxtacortical"},{"id":7455,"text":"infratentorial"},{"id":7456,"text":"periventricular"},{"id":7457,"text":"spinal cord"},{"id":7458,"text":"subcortical"}],"archived":false,"correctAlternativeId":7458,"explanation":"\u003cp\u003eDissemination in space assesses for the presence of lesions in the following 4 regions:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003eperiventricular (≥1 lesion, unless the patient is over the age of 50 in which case it is advised to seek a higher number of lesions)\u003c/li\u003e\n\u003cli\u003ecortical or\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/juxtacortical?lang=gb\"\u003ejuxtacortical\u003c/a\u003e\u0026nbsp;(≥1 lesion)\u003c/li\u003e\n\u003cli\u003einfratentorial (≥1 lesion)\u003c/li\u003e\n\u003cli\u003espinal cord (≥1 lesion)\u003c/li\u003e\n\u003c/ul\u003e\u003cp\u003eNotably, T2-hyperintense lesions of the optic nerve, such as those in a patient presenting with optic neuritis, cannot be used in fulfilling the 2017 revised McDonald criteria.\u003c/p\u003e\u003cp\u003eSubcortical lesions (those neither abutting the ventricles nor the cortex) are also not counted.\u0026nbsp;\u003c/p\u003e","id":1492,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2590","nextQuestionPath":"/articles/multiple-sclerosis/questions/1464","relatedArticles":[{"id":57578,"title":"McDonald diagnostic criteria for multiple sclerosis","link":"/articles/mcdonald-diagnostic-criteria-for-multiple-sclerosis-4?lang=us"}],"alsoUsedIn":[{"id":256,"kind":"Course","title":"Multiple Sclerosis: criteria, protocol \u0026 detection","link":"https://radiopaedia.org/courses/multiple-sclerosis-criteria-protocol-detection"},{"id":580,"kind":"Course","title":"Neuroradiology Lectures - page 580","link":"https://radiopaedia.org/courses/neuroradiology-lectures/pages/580"},{"id":580,"kind":"Course","title":"Radiopaedia 2020 - Lectures Only - page 580","link":"https://radiopaedia.org/courses/radiopaedia-2020-exclusive/pages/580"},{"id":580,"kind":"Course","title":"2020 Virtual Conference Private Use - page 580","link":"https://radiopaedia.org/courses/2020-virtual-conference-private-use/pages/580"},{"id":580,"kind":"Course","title":"New test course - page 580","link":"https://radiopaedia.org/courses/new-test-course/pages/580"}],"stem":"\u003cp\u003eWhich of the following is\u0026nbsp;\u003cstrong\u003eNOT\u003c/strong\u003e\u0026nbsp;one of the 4 regions considered when assessing MRI scans for the dissemination in space component of McDonald criteria for multiple sclerosis (2017 version)?\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/1492"}],"attemptsPercentages":[{"alternativeId":"7458","percentage":82},{"alternativeId":"7456","percentage":2},{"alternativeId":"7454","percentage":5},{"alternativeId":"7457","percentage":6},{"alternativeId":"7455","percentage":5}],"promptToLogin":false,"questionManager":false,"articleId":"multiple-sclerosis"}