Question 2261
{"accessible":false,"alternatives":[{"id":11200,"text":"axial in lateral flexion"},{"id":11201,"text":"axial in rotation"},{"id":11202,"text":"CSF flow studies"},{"id":11203,"text":"high resolution T2 "},{"id":11204,"text":"sagittal in extension"},{"id":11205,"text":"sagittal in flexion"}],"archived":false,"correctAlternativeId":11205,"explanation":"\u003cp\u003eDuring flexion, the posterior theca migrates forward with the creation of a dorsal epidural\u0026nbsp;crescent that appears as high signal intensity on T1- and T2-weighted sequences and enhances uniformly on T1 C+ (Gd), with or without epidural flow voids.\u0026nbsp;\u003c/p\u003e","id":2261,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2763","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[{"id":1180,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1180","link":"https://radiopaedia.org/courses/adult-neuroradiology-review-course/pages/1180"},{"id":1180,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1180","link":"https://radiopaedia.org/courses/adult-brain-mri-review-course-2015-online-video/pages/1180"}],"stem":"\u003cp\u003eWhich MRI sequence is most important in making the diagnosis of Hirayama disease?\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/2261"}],"attemptsPercentages":[{"alternativeId":"11202","percentage":2},{"alternativeId":"11205","percentage":91},{"alternativeId":"11204","percentage":2},{"alternativeId":"11203","percentage":3},{"alternativeId":"11200","percentage":2},{"alternativeId":"11201","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"hirayama-disease"}