Question 802
{"accessible":false,"alternatives":[{"id":4057,"text":"a high resistance interface is required for best spatial resolution"},{"id":4058,"text":"a low bandpass system is required for best spatial resolution"},{"id":4059,"text":"a vidicon has more lag than a plumbicon"},{"id":4060,"text":"the Australian TV scanning standard is 625 lines, interlaced"},{"id":4061,"text":"video tubes vary in contrast depending on the type of target used"}],"archived":false,"correctAlternativeId":4058,"explanation":"\u003cp\u003eOld commercial television systems have a bandpass of approximately 3.5 MHz. Fluoroscopy systems use approximately 4.5 MHz. The higher the bandpass, the better the horizontal resolution.\u003c/p\u003e\u003cp\u003eAdapted from\u0026nbsp;\u003ca href=\"https://en.wikibooks.org/wiki/Basic_Physics_of_Digital_Radiography\"\u003eBasic Physics of Digital Radiography\u003c/a\u003e\u0026nbsp;by\u0026nbsp;Kieran Maher,\u0026nbsp;with author's permission (License:\u0026nbsp;\u003ca href=\"https://creativecommons.org/licenses/by-sa/3.0/\"\u003eCreative Commons\u0026nbsp;BY-SA 3.0\u003c/a\u003e).\u003c/p\u003e","id":802,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/809","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[],"stem":"\u003cp\u003eWith regard to TV cameras, which statement is false?\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/802"}],"attemptsPercentages":[{"alternativeId":"4058","percentage":30},{"alternativeId":"4060","percentage":9},{"alternativeId":"4059","percentage":22},{"alternativeId":"4057","percentage":15},{"alternativeId":"4061","percentage":24}],"promptToLogin":false,"questionManager":false,"articleId":"spatial-resolution"}