Question 794
{"accessible":false,"alternatives":[{"id":4016,"text":"10"},{"id":4017,"text":"128"},{"id":4018,"text":"512"},{"id":4019,"text":"1024"},{"id":4020,"text":"2048"}],"archived":false,"correctAlternativeId":4019,"explanation":"\u003cp\u003eThe k bit is the number of bits per pixel, the grey scale of an image is equal to 2k-bit, for example:\u003cbr\u003e\u003cstrong\u003ek bit of 10 = 2\u003csup\u003e10\u0026nbsp;\u003c/sup\u003e= 1024\u003c/strong\u003e\u003cbr\u003eThe higher the bit depth, the more grey scale and therefore the higher the contrast resolution.\u0026nbsp;\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":794,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1542","nextQuestionPath":"/articles/digital-image/questions/789","relatedArticles":[],"alsoUsedIn":[],"stem":"\u003cp\u003eIn analog to digital conversion, a memory 10 bits deep allows how many grey levels?\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/794"}],"attemptsPercentages":[{"alternativeId":"4019","percentage":59},{"alternativeId":"4020","percentage":12},{"alternativeId":"4016","percentage":5},{"alternativeId":"4017","percentage":5},{"alternativeId":"4018","percentage":19}],"promptToLogin":false,"questionManager":false,"articleId":"digital-image"}