Question 1487
{"accessible":false,"alternatives":[{"id":7428,"text":"gastric lap band"},{"id":7429,"text":"intragastric balloon therapy"},{"id":7430,"text":"jejunoileal bypass"},{"id":7431,"text":"Roux-en-Y gastric bypass"},{"id":7432,"text":"sleeve gastrectomy"}],"archived":false,"correctAlternativeId":7428,"explanation":"\u003cp\u003eThe Phi angle is the angle between the vertebral column and a gastric lap band, and is one of the components assessed during a fluoroscopic examination.\u0026nbsp;A normal Phi angle is 4-58º. Fluoroscopic assessment of sleeve gastrectomy is focussed on sleeve volume and staple line leaks, and for Roux-en-Y gastric bypass, on pouch volume and ease of contrast passage through the gastrojejunostomy. A jejunoileal bypass\u0026nbsp;is no longer performed due to severe side effects.\u003c/p\u003e","id":1487,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1487","nextQuestionPath":null,"relatedArticles":[{"id":14021,"title":"Roux-en-Y gastric bypass surgery","link":"/articles/roux-en-y-gastric-bypass-surgery?lang=us"},{"id":25662,"title":"Sleeve gastrectomy","link":"/articles/sleeve-gastrectomy-1?lang=us"},{"id":38084,"title":"Jejunoileal bypass","link":"/articles/jejunoileal-bypass?lang=us"},{"id":47632,"title":"Bariatric intragastric balloon therapy","link":"/articles/bariatric-intragastric-balloon-therapy-1?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eIn the post-procedure imaging of which of the following weight-loss surgical procedures is the Phi angle measured?\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/1487"}],"attemptsPercentages":[{"alternativeId":"7431","percentage":19},{"alternativeId":"7432","percentage":10},{"alternativeId":"7430","percentage":5},{"alternativeId":"7428","percentage":63},{"alternativeId":"7429","percentage":3}],"promptToLogin":false,"questionManager":false,"articleId":"gastric-band"}