{"id":13576,"date":"2021-04-01T13:35:50","date_gmt":"2021-04-01T10:35:50","guid":{"rendered":"https:\/\/umram.bilkent.edu.tr\/index.php\/2021\/04\/01\/mrida-eszamanli-iletim-ve-alimda-gurultunun-analizi-ve-azaltilmasi\/"},"modified":"2026-11-04T10:59:00","modified_gmt":"2026-11-04T07:59:00","slug":"mrida-eszamanli-iletim-ve-alimda-gurultunun-analizi-ve-azaltilmasi","status":"publish","type":"post","link":"https:\/\/umram.bilkent.edu.tr\/index.php\/tr\/2021\/04\/01\/mrida-eszamanli-iletim-ve-alimda-gurultunun-analizi-ve-azaltilmasi\/","title":{"rendered":"MRI&#8217;da e\u015fzamanl\u0131 iletim ve al\u0131mda g\u00fcr\u00fclt\u00fcn\u00fcn analizi ve azalt\u0131lmas\u0131"},"content":{"rendered":"<p>Doktora \u00f6\u011frencimiz <a href=\"https:\/\/umram.bilkent.edu.tr\/index.php\/teams\/bilal-tasdelen\/\">Bilal Ta\u015fdelen<\/a> ve \u00e7al\u0131\u015fma arkada\u015flar\u0131n\u0131n \u201cAnalysis and mitigation of noise in simultaneous transmission and reception in MRI\u201d ba\u015fl\u0131kl\u0131 makalesi yay\u0131mlanm\u0131\u015ft\u0131r.<\/p>\n<h2>\u00d6zet<\/h2>\n<h3>Ama\u00e7<\/h3>\n<p>E\u015fzamanl\u0131 iletim ve al\u0131ml\u0131 (STAR) MRI&#8217;da, uyarma darbesinin al\u0131nan sinyale ba\u011fla\u015fmas\u0131n\u0131n yan\u0131 s\u0131ra iletim zincirinden gelen g\u00fcr\u00fclt\u00fc ve istenmeyen bozulmalar (spurlar) da al\u0131nan sinyale s\u0131zarak g\u00f6r\u00fcnt\u00fc kalitesini d\u00fc\u015f\u00fcr\u00fcr. Bu \u00e7al\u0131\u015fmada ba\u011fla\u015fan g\u00fcr\u00fclt\u00fcn\u00fcn \u00f6zellikleri ve bu g\u00fcr\u00fclt\u00fcn\u00fcn iletim y\u00fckselteci kazanc\u0131, iletim zinciri g\u00fcr\u00fclt\u00fc yo\u011funlu\u011fu, yal\u0131t\u0131m ba\u015far\u0131m\u0131 ve g\u00f6r\u00fcnt\u00fcleme bant geni\u015fli\u011fi ile ili\u015fkisi analiz edilmektedir. Yak\u0131n zamanda \u00f6nerilen bir STAR tekni\u011fiyle iletim g\u00fcr\u00fclt\u00fcs\u00fcn\u00fcn azalt\u0131labildi\u011fi g\u00f6sterilmekte, y\u00fcksek yal\u0131t\u0131m elde etmenin ve ilgili parametrelerin dikkatle se\u00e7ilmesinin \u00f6nemi ortaya konmaktad\u0131r.<\/p>\n<h3>Kuram ve y\u00f6ntemler<\/h3>\n<p>\u0130letim-al\u0131m yal\u0131t\u0131m\u0131 i\u00e7in bir vekt\u00f6r mod\u00fclat\u00f6r\u00fcyle birlikte bir iptal algoritmas\u0131 kullan\u0131lm\u0131\u015ft\u0131r. Her blo\u011fun g\u00fcr\u00fclt\u00fcye katk\u0131s\u0131n\u0131 g\u00f6stermek i\u00e7in taray\u0131c\u0131 bir bloklar zinciri olarak modellenmi\u015ftir. Yal\u0131t\u0131m artt\u0131k\u00e7a ba\u011fla\u015fan iletim g\u00fcr\u00fclt\u00fcs\u00fc, bask\u0131n g\u00fcr\u00fclt\u00fc kayna\u011f\u0131 darbeli MRI&#8217;da oldu\u011fu gibi al\u0131m g\u00fcr\u00fclt\u00fcs\u00fc olacak d\u00fczeye kadar azalt\u0131labilir. T\u00fcretilen g\u00fcr\u00fclt\u00fc-iletim parametresi ili\u015fkisini do\u011frulamak i\u00e7in deneylerde farkl\u0131 kazan\u00e7 ve g\u00fcr\u00fclt\u00fc \u00f6zelliklerine sahip y\u00fckselte\u00e7ler kullan\u0131lm\u0131\u015ft\u0131r.<\/p>\n<h3>Bulgular<\/h3>\n<p>\u00d6nerilen teknikle analog alanda 80 dB&#8217;nin \u00fczerinde yal\u0131t\u0131m elde edilmi\u015ftir. \u0130letim zincirinden s\u0131zan g\u00fcr\u00fclt\u00fc ve spurlar azalt\u0131lm\u0131\u015ft\u0131r. Yeterli yal\u0131t\u0131m\u0131 belirlemede en kritik rol\u00fc iletim kazanc\u0131n\u0131n oynad\u0131\u011f\u0131, y\u00fckseltecin g\u00fcr\u00fclt\u00fc fakt\u00f6r\u00fcn\u00fcn ise ayn\u0131 \u00f6l\u00e7\u00fcde katk\u0131 yapmad\u0131\u011f\u0131 g\u00f6sterilmi\u015ftir.<\/p>\n<h3>Sonu\u00e7<\/h3>\n<p>STAR g\u00f6r\u00fcnt\u00fclemedeki iletim g\u00fcr\u00fclt\u00fcs\u00fc ve spurlar analiz edilmi\u015f ve bir vekt\u00f6r mod\u00fclat\u00f6r\u00fc kullan\u0131larak azalt\u0131lm\u0131\u015ft\u0131r.<\/p>\n\n<p>Ayr\u0131nt\u0131lar i\u00e7in: <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/mrm.28782\" target=\"_blank\" rel=\"noopener\">https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/mrm.28782<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Doktora \u00f6\u011frencimiz Bilal Ta\u015fdelen ve \u00e7al\u0131\u015fma arkada\u015flar\u0131n\u0131n \u201cAnalysis and mitigation of noise in simultaneous transmission and reception in MRI\u201d ba\u015fl\u0131kl\u0131 makalesi yay\u0131mlanm\u0131\u015ft\u0131r. \u00d6zet Ama\u00e7 E\u015fzamanl\u0131 iletim ve al\u0131ml\u0131 (STAR) MRI&#8217;da, uyarma darbesinin al\u0131nan sinyale ba\u011fla\u015fmas\u0131n\u0131n yan\u0131 s\u0131ra iletim zincirinden gelen g\u00fcr\u00fclt\u00fc ve istenmeyen bozulmalar (spurlar) da al\u0131nan sinyale s\u0131zarak g\u00f6r\u00fcnt\u00fc kalitesini d\u00fc\u015f\u00fcr\u00fcr. Bu \u00e7al\u0131\u015fmada ba\u011fla\u015fan\u2026<\/p>\n","protected":false},"author":9,"featured_media":11530,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[445],"tags":[],"class_list":["post-13576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-duyurular"],"_links":{"self":[{"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/posts\/13576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/comments?post=13576"}],"version-history":[{"count":1,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/posts\/13576\/revisions"}],"predecessor-version":[{"id":13577,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/posts\/13576\/revisions\/13577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/media\/11530"}],"wp:attachment":[{"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/media?parent=13576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/categories?post=13576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/umram.bilkent.edu.tr\/index.php\/wp-json\/wp\/v2\/tags?post=13576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}