ganewar asali na Ultrasonic
Likitan ultrasonic diagnostic kayan aikin kayan aikin likita ne wanda ya haɗu da ƙa'idar sonar da fasahar radar don aikace-aikacen asibiti.Babban ka'idar ita ce babban mitar motsin bugun jini na ultrasonic yana haskakawa cikin kwayoyin halitta, kuma nau'ikan igiyoyi daban-daban suna nunawa daga musaya daban-daban a cikin kwayoyin don samar da hotuna.Don sanin ko akwai raunuka a cikin kwayoyin halitta.The ultrasonic ganewar asali kayan aiki ya ɓullo da daga asali daya-girma ultrasonic duban dan tayi nuni zuwa ga biyu-girma uku-girma da hudu ultrasonic Ana dubawa da nuni, wanda ƙwarai qara echo bayanai da kuma sa raunuka a cikin nazarin halittu jiki bayyananne da kuma sauki to. bambanta.Sabili da haka, za a ƙara yin amfani da shi a cikin kayan aikin likitancin ultrasonic na likita.
1. Na'urar duban dan tayi da nuni daya-girma
A cikin kayan aikin bincike na ultrasonic, mutane sukan koma zuwa nau'in A da Nau'in M, waɗanda aka gano ta hanyar fasahar auna nisa ta ultrasonic pulse-echo, azaman gwajin ultrasonic mai girman fuska ɗaya.Jagoran irin wannan nau'in watsawar ultrasonic ba ya canzawa, kuma girman girman ko sikelin launin toka na siginar da aka nuna baya daga ma'aunin rashin daidaituwa na lokaci guda ya bambanta.Bayan haɓakawa, ana nuna shi a kwance ko a tsaye akan allon.Irin wannan hoton ana kiransa hoton ultrasonic mai girma ɗaya.
(1) Nau'in A duban dan tayi
Bincike (transducer) bisa ga matsayin binciken, a madaidaiciyar hanya zuwa jikin ɗan adam don fitar da raƙuman ruwa na megahertz da yawa, ta hanyar motsin motsin jikin ɗan adam da haɓakawa, da girman faɗakarwa da siffar akan nunin allo.Haɗin kai tsaye na nuni yana nuna girman girman siginar sautin ra'ayi;Akwai ma'aunin lokaci da nisa akan abscissa.Wannan na iya dogara ne akan wurin da sautin faɗakarwa yake, girman faɗakarwa, siffa, lambar igiyar ruwa da bayanan da ke da alaƙa daga rauni da wurin jikin mutum don ganewar asali.A – Nau'in bincike na ultrasonic a Tsayayyen matsayi zai iya samun bakan.
(2) Nau'in duban dan tayi na M-type
Binciken (mai canzawa) yana watsawa kuma yana karɓar katako na ultrasonic zuwa jiki a madaidaiciyar matsayi da shugabanci.Ƙunƙarar tana daidaita haske na layin binciken tsaye na nuni ta hanyar wucewa ta siginar amsawa na zurfafa daban-daban, kuma yana faɗaɗa shi cikin tsari lokaci, yana samar da zanen yanayin motsi na kowane batu a cikin sarari mai girma ɗaya cikin lokaci.Wannan shi ne yanayin duban dan tayi.Hakanan za'a iya fahimtarsa kamar haka: M-yanayin duban dan tayi shine taswirar waƙa mai girman fuska ɗaya na canje-canjen lokaci a wurare masu zurfi daban-daban tare da hanya ɗaya.M - tsarin dubawa ya dace musamman don nazarin gabobin motsa jiki.Misali, a cikin gwajin zuciya, ana iya auna ma'auni iri-iri na aikin zuciya akan yanayin jadawali da aka nuna, don haka duban dan tayi na m-mode.Har ila yau, an san shi da echocardiography.
2. Biyu-girma ultrasonic dubawa da nuni
Domin duban dan tayi mai girma daya kawai zai iya tantance gabobin jikin mutum bisa ga girman igiyoyin dawowar ultrasonic da kuma yawan amsawa a cikin jadawali, duban dan tayi mai girma daya (nau'in duban dan tayi) yana da iyaka sosai a cikin ganewar asibiti na ultrasonic.Ka'idar hoton hoto mai girma biyu na ultrasonic shine amfani da ultrasonic bugun jini echo, daidaitawar haske na nunin sikelin launin toka mai girma biyu, yana nuna bayanan wani sashe na jikin mutum a sarari.Na'urar daukar hoto mai fuska biyu ta sanya na'urar transducer zuwa jikin dan adam ta tsayayyen hanya a cikin binciken ya harba MHZ Ultrasound da yawa, kuma zuwa wani takamaiman gudu a cikin sarari mai fuska biyu, wato na'urar da za a iya duba sararin samaniya mai fuska biyu, sannan a aika ta bayan mutum. jiki don haɓaka aikin siginar echo don nuna cathode ko sarrafawa akan grid, nunin tabo mai haske yana canzawa tare da girman siginar amsawa, An ƙirƙiri hoton hoto mai girma biyu.Lokacin da aka nuna akan allon, ordinate yana wakiltar lokaci ko zurfin motsin sauti a cikin jiki, yayin da haske ke daidaita shi ta hanyar amplitude na ultrasonic echo a daidai wurin sararin samaniya, kuma abscissa yana wakiltar jagorancin sautin sautin yana duban jikin mutum.
Lokacin aikawa: Mayu-28-2022