Question 1768
{"accessible":true,"alternatives":[{"id":8782,"text":"A"},{"id":8783,"text":"B"},{"id":8784,"text":"C"},{"id":8785,"text":"D"},{"id":8786,"text":"E"}],"archived":false,"correctAlternativeId":8785,"explanation":"\u003cp\u003eIschemic penumbra denotes the part of an acute ischemic stroke that is at risk of progressing to infarction but is still salvageable if reperfused. It is usually located around an infarct core which represents the tissue which has already infarcted or is going to infarct regardless of reperfusion.\u003c/p\u003e\u003cp\u003eUnlike \u003ca title=\"Benign oligemia\" class=\"internal\" href=\"/articles/benign-oligemia\"\u003ebenign oligemia\u003c/a\u003e, tissue within the penumbra is unable to function normally.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e","id":1768,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/261/Slides-for-perfusion-case.key_big_gallery.jpeg","imageAttribution":{"kind":"external","attribution":"Aaron S. Field MD, PhD"},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1768","nextQuestionPath":"/articles/ischaemic-penumbra/questions/345","relatedArticles":[{"id":82022,"title":"CT brain perfusion (protocol)","link":"/articles/ct-brain-perfusion-protocol?lang=us"}],"alsoUsedIn":[{"id":766,"kind":"Course","title":"Stroke Learning Pathway - page 766","link":"https://radiopaedia.org/courses/stroke-learning-pathway/pages/766"},{"id":928,"kind":"Course","title":"2021 Virtual Conference Private Use - page 928","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/928"},{"id":928,"kind":"Course","title":"CT \u0026 MRI Lectures - page 928","link":"https://radiopaedia.org/courses/ct-mri-lectures/pages/928"},{"id":2103,"kind":"Course","title":"Stroke Learning Pathway - peer review - page 2103","link":"https://radiopaedia.org/courses/stroke-learning-pathway-peer-review/pages/2103"}],"stem":"\u003cp\u003eIn the accompanying\u0026nbsp;graphic, that depicts\u0026nbsp;the changes in cerebral perfusion parameters with progressively decreasing perfusion pressure, which letter best identifies the ischemic penumbra?\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/1768"}],"attemptsPercentages":[{"alternativeId":"8784","percentage":21},{"alternativeId":"8782","percentage":1},{"alternativeId":"8785","percentage":71},{"alternativeId":"8786","percentage":4},{"alternativeId":"8783","percentage":3}],"promptToLogin":false,"questionManager":false,"articleId":"ischemic-penumbra"}