Question 2951
{"accessible":false,"alternatives":[{"id":14372,"text":"increased sampling rate"},{"id":14373,"text":"increased signal-to-noise"},{"id":14374,"text":"reduced chemical shift artifact"},{"id":14375,"text":"reduced sampling time"}],"archived":false,"correctAlternativeId":14373,"explanation":"\u003cp\u003eSignal-to-noise = 1/√bandwidth\u003c/p\u003e\u003cp\u003eTherefore, an decrease in bandwidth leads to an improvement in signal-to-noise.\u003c/p\u003e\u003cp\u003eBandwidth = sampling rate. Therefore, sampling rate decreases.\u003c/p\u003e\u003cp\u003eSampling interval = 1 / sampling rate. Sampling time = sampling interval x number of frequency encoding samples. \u003c/p\u003e\u003cp\u003eTherefore, sampling interval increases and leads to an increase in sampling time.\u003c/p\u003e\u003cp\u003eDecreasing bandwidth worsens chemical shift artifact.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":2951,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2967","nextQuestionPath":"/articles/acquisition-time/questions/2950","relatedArticles":[{"id":60743,"title":"Chemical shift","link":"/articles/chemical-shift?lang=us"},{"id":14045,"title":"Signal-to-noise ratio (MRI)","link":"/articles/signal-to-noise-ratio-mri?lang=us"},{"id":1103,"title":"Chemical shift artifact","link":"/articles/chemical-shift-artifact-1?lang=us"},{"id":60748,"title":"Effect of gradient strength and bandwidth on slice thickness","link":"/articles/effect-of-gradient-strength-and-bandwidth-on-slice-thickness?lang=us"}],"alsoUsedIn":[{"id":1927,"kind":"Course","title":"Imaging Physics: MRI - page 1927","link":"https://radiopaedia.org/courses/imaging-physics-mri/pages/1927"}],"stem":"\u003cp\u003eWhat does a reduction in receiver bandwidth cause?\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/2951"}],"attemptsPercentages":[{"alternativeId":"14375","percentage":23},{"alternativeId":"14373","percentage":53},{"alternativeId":"14374","percentage":15},{"alternativeId":"14372","percentage":9}],"promptToLogin":false,"questionManager":false,"articleId":"acquisition-time"}