Ultrason nedir?
\nUltrason ses dalgalar\u0131n\u0131n \u00f6zelliklerinde yararlan\u0131larak olu\u015fturulmu\u015f bir ayg\u0131tt\u0131r. Aletin gezici k\u0131sm\u0131ndan insan kula\u011f\u0131n\u0131n duyam\u0131yaca\u011f\u0131 kadar y\u00fcksek frekansl\u0131 ses dalgalar\u0131 \u00e7\u0131kar. Bu dalgalar de\u011fi\u015fik yo\u011funluktaki ortamlardan ge\u00e7erken geri yans\u0131r. Bu geri yans\u0131malar prob dedi\u011fimiz k\u0131s\u0131m taraf\u0131ndan toplan\u0131r ve cihaz\u0131n beynine g\u00f6nderilir. I\u00e7 organlardan geri yans\u0131yan ses dalgalar\u0131 aletin bilgisayar\u0131 taraf\u0131ndan resim haline getirilir ve ekranda g\u00f6r\u00fcl\u00fcr. B\u00f6ylece i\u00e7 organlar\u0131n ve Can\u0131n \u015fekli ortaya \u00e7\u0131kar. Sert organlar beyaz, yumu\u015fak organlar gri, s\u0131v\u0131 organlar siyah olarak g\u00f6z\u00fck\u00fcr. Bir organda ne kadar de\u011fi\u015fik yo\u011funluk bir arada ise o organ o kadar iyi izlenir. Can\u0131n etraf\u0131 s\u0131v\u0131 ile \u00e7evrili oldu\u011fundan \u00e7ok net g\u00f6r\u00fcnt\u00fcler elde edilir. Ses dalgalar\u0131 X \u0131\u015f\u0131n\u0131 i\u00e7ermedi\u011finden radyasyon etkisi yoktur. \u0130nsanlar \u00fczerinde hi\u00e7bir zararl\u0131 etkisi g\u00f6sterilmemi\u015ftir.
\nUltrason aletinin iki ana par\u00e7as\u0131 vard\u0131r : Ana \u00fcnite ve prob. Tetkik esnas\u0131nda incelenen v\u00fccut alan\u0131na konulan ultrason par\u00e7as\u0131na prob denir.Y\u00fcksek frekansl\u0131 sesler, prob i\u00e7inde bulunan transd\u00fcser (\u00e7evirici) arac\u0131l\u0131\u011f\u0131yla elektrik enerjisine d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr. V\u00fccuttan gelen ses dalgalar\u0131n\u0131n olu\u015fturdu\u011fu enerji de yine ayn\u0131 \u015fekilde transd\u00fcser arac\u0131l\u0131\u011f\u0131yla elektrik enerjisine \u00e7evrilir.Bu de\u011fi\u015fimler prob i\u00e7indeki piazoelektrik kristallerde ger\u00e7ekle\u015fir.B\u00f6ylece v\u00fccuttan gelen ses dalgalar\u0131 g\u00f6r\u00fcnt\u00fcye \u00e7evrilerek TV ekran\u0131nda g\u00f6r\u00fcn\u00fcr hale getirilir. Olu\u015fturulan g\u00f6r\u00fcnt\u00fcye sonogram denir. Bu g\u00f6r\u00fcnt\u00fcler printer (foto\u011fraf bask\u0131 arac\u0131) ile an\u0131nda kaydedilebilir.
\nUltrasonografi en \u00e7ok , s\u0131v\u0131 i\u00e7eren organlar\u0131n ve yap\u0131lar\u0131n incelenmesinde yararl\u0131d\u0131r.Kemik gibi kat\u0131 yap\u0131lar ve akci\u011fer gibi hava dolu organlar (\u00e7ok fazla s\u0131v\u0131 i\u00e7ermediklerinden) ultrasonda iyi g\u00f6r\u00fcnmezler.Fakat s\u0131v\u0131 i\u00e7eren organlardaki kitle ve kat\u0131 olu\u015fumlar izlenebilir. Ultrasonografi \u00e7e\u015fitli alanlarda kullan\u0131l\u0131r: Bat\u0131n (kar\u0131n) i\u00e7i organlar\u0131 incelemede (abdominal USG),kad\u0131n hastal\u0131klar\u0131nda (jinekolojik USG),gebelik ve do\u011fum takibinde (obstetrik USG), kalp i\u015flevlerinin ve yap\u0131s\u0131n\u0131n incelenmesinde (ekokardiografi), meme dokusunu incelemede (mamografi), damarlar\u0131n-tiroid-testis-g\u00f6z vb organ ve yap\u0131lar\u0131n incelenmesinde…\u0130ncelenen organ\u0131n yerine ve \u00f6zelli\u011fine g\u00f6re, de\u011fi\u015fik ultrason cihazlar\u0131 ve problar kullan\u0131l\u0131r.Ultrasonografide prob, genelde (abdominal USGde oldu\u011fu gibi) v\u00fccut \u00fczerinde gezdirilir.Probun v\u00fccut i\u00e7ine sokulmas\u0131 yoluyla yap\u0131lan USG \u00e7e\u015fitleri de vard\u0131r: Transvaginal, transrektal gibi..
\nUltrasonun yararlar\u0131 nelerdir?
\nDo\u011fum hekimli\u011finde, ultrason anne karn\u0131nda b\u00fcy\u00fcmekte olan bebe\u011fi g\u00f6rmek i\u00e7in kullan\u0131l\u0131r. Hamile bir anne i\u00e7in b\u00f6yle bir cihaz\u0131n bulunmas\u0131 \u00e7ok b\u00fcy\u00fck bir \u015fansd\u0131r. Daha \u00f6nceleri, anla\u015f\u0131lamayan bir \u00e7ok olumsuzluk \u015fimdi erkenden ve kolayl\u0131kla saptanabilmektedir. Ultrasonla Anne karn\u0131ndaki Can\u0131n tepeden t\u0131rna\u011fa muayenesini yapmak m\u00fcmk\u00fcnd\u00fcr. I\u00e7erdeki Can\u0131n sa\u011fl\u0131\u011f\u0131 a\u00e7\u0131s\u0131ndan \u00e7ok \u00f6nemli bilgiler elde edilir.
\nDoppler Ultrason…
\nTeknoloji kan damarlar\u0131ndaki s\u0131v\u0131n\u0131n y\u00f6n\u00fcn\u00fc ve h\u0131z\u0131n\u0131 \u00f6l\u00e7ecek duruma gelmi\u015ftir. Bu i\u015flem doppler etki dedi\u011fimiz fiziksel olay sayesinde m\u00fcmk\u00fcn olmaktad\u0131r. Hareket ile sesin frekans\u0131 de\u011fi\u015fmektedir. Hareket eden kan h\u00fccrelerinden yans\u0131yan ses dalgalar\u0131n\u0131n frekans\u0131, hareket etmeyen organlardan yans\u0131yan ses dalgalar\u0131na g\u00f6re farkl\u0131d\u0131r. Bu farkl\u0131l\u0131\u011f\u0131n cihaz taraf\u0131ndan saptanmas\u0131 ile bir damardaki kan ak\u0131m\u0131n\u0131n miktar\u0131 saptan\u0131r. Cihaza do\u011fru olan ak\u0131mlar k\u0131rm\u0131z\u0131, cihazdan uzakla\u015fan ak\u0131mlar mavi renkte g\u00f6r\u00fcnt\u00fc verir. <\/p>\n","protected":false},"excerpt":{"rendered":"
Ultrason nedir? Ultrason ses dalgalar\u0131n\u0131n \u00f6zelliklerinde yararlan\u0131larak olu\u015fturulmu\u015f bir ayg\u0131tt\u0131r. Aletin gezici k\u0131sm\u0131ndan insan kula\u011f\u0131n\u0131n duyam\u0131yaca\u011f\u0131 kadar y\u00fcksek frekansl\u0131 ses dalgalar\u0131 \u00e7\u0131kar. Bu dalgalar de\u011fi\u015fik yo\u011funluktaki ortamlardan ge\u00e7erken geri yans\u0131r. Bu geri yans\u0131malar prob dedi\u011fimiz k\u0131s\u0131m taraf\u0131ndan toplan\u0131r ve cihaz\u0131n beynine g\u00f6nderilir. I\u00e7 organlardan geri yans\u0131yan ses dalgalar\u0131 aletin bilgisayar\u0131 taraf\u0131ndan resim haline getirilir ve …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1407,1403],"tags":[2319,3506,3504,2732,3505],"class_list":["post-1190","post","type-post","status-publish","format-standard","hentry","category-fen-ve-teknoloji-odevleri","category-odevler","tag-akciger","tag-prob","tag-ultrason-nedir","tag-x-isini","tag-yuksek-frekansli-ses-dalgalari"],"_links":{"self":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/1190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/comments?post=1190"}],"version-history":[{"count":0,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/1190\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/media?parent=1190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/categories?post=1190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/tags?post=1190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}