Question 2747
{"accessible":false,"alternatives":[{"id":13409,"text":"amorphous silicon detector element"},{"id":13410,"text":"capacitor"},{"id":13411,"text":"fibre-optic coupling"},{"id":13412,"text":"optical lenses"},{"id":13413,"text":"scintillator layer"}],"archived":false,"correctAlternativeId":13410,"explanation":"\u003cp\u003eCapacitors store charge and are used in thin-film-transistor array detector systems.\u003c/p\u003e\u003cp\u003eCharge coupled device systems convert x-ray photons to light using a scintillator layer, then couple this light to the amorphous silicon detector elements (dexels) using either fibre-optic coupling or optical lenses. \u003c/p\u003e","id":2747,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2753","nextQuestionPath":null,"relatedArticles":[{"id":60498,"title":"Direct digital radiography","link":"/articles/direct-digital-radiography?lang=gb"}],"alsoUsedIn":[{"id":1563,"kind":"RestrictedPage","title":"Page 1563 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1563"},{"id":2007,"kind":"Course","title":"Imaging Physics: X-ray - page 2007","link":"https://radiopaedia.org/courses/imaging-physics-x-ray/pages/2007"},{"id":2007,"kind":"Course","title":"Imaging Physics: X-ray peer review - page 2007","link":"https://radiopaedia.org/courses/imaging-physics-x-ray-peer-review/pages/2007"}],"stem":"\u003cp\u003eWhich of the following is not used in charge-coupled device detectors?\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/2747"}],"attemptsPercentages":[{"alternativeId":"13411","percentage":5},{"alternativeId":"13412","percentage":14},{"alternativeId":"13413","percentage":12},{"alternativeId":"13409","percentage":28},{"alternativeId":"13410","percentage":41}],"promptToLogin":false,"questionManager":false,"articleId":"charge-coupled-device-detector"}