Puas yog ultrasounds muaj xim?
Cov neeg mob lossis lawv tsev neeg yuav ib txwm nug: "Qhov no puas yog xim Doppler ultrasound? Vim li cas nws zoo li dub thiab dawb?" Ntau tus neeg xav tias xim Doppler ultrasound yuav tsum zoo li lub TV xim, nrog cov xim liab thiab ntsuab, muaj yeeb yuj, thiab tib neeg thiab txhua yam tuaj yeem pom ntawm ib nrais muag. Thaum ib tus neeg mob pom cov duab dub thiab dawb, nws xav paub yog tias tus kws kho mob muab nws cov xim dub thiab dawb, uas tsis yog qhov teeb meem.
Xim Doppler ultrasound, tseem hu ua xim Doppler ultrasound, tsuas yog ib qho kev txhais siab dub thiab dawb B-ultrasound ntxiv rau cov xim ntshav ntws. Yog li ntawd, xim Doppler ultrasound tsuas yog ua raws cov xim dub thiab dawb ultrasonography ntxiv rau cov ntshav ntws hauv cov hlab ntsha. Xim ntawm no yog hais txog "vascular blood flow". Txhua yam yog xim dub thiab dawb, tab sis xim dub thiab dawb ntawm xim Doppler ultrasonography yog qhov tseeb dua thiab muaj kev daws teeb meem siab dua li dub thiab dawb ultrasonography. Siab dua, zoo li ob lub TV dub thiab dawb, ib qho ntshiab thiab ib qho tsis yog (xws li daus ntau ntawm qhov screen).
Xim ntshav ntws imaging yog los tso saib cov ntshav ntws hloov hauv daim ntawv ntawm pseudo-xim coding ntawm cov ntshav tau txais cov cim. Feem ntau, cov ntshav ntws mus rau qhov kev sojntsuam yog teeb liab, thiab cov ntshav ntws tawm ntawm qhov kev sojntsuam yog teeb xiav, uas yog hais tias: Peb tsuas yog siv cov xim Doppler thaum peb xav kom nkag siab txog cov ntshav ntws. Tsuas yog lub sijhawm no yuav cov xim tshwm ntawm qhov screen, feem ntau yog liab thiab xiav. Thaum muaj turbulent flow, ntau xim yuav tshwm rau ntawm qhov screen. .
Xim Doppler ultrasound tsis tsuas yog muaj qhov zoo ntawm ob-dimensional ultrasound structural dluab (B-ultrasound), tab sis kuj muab cov ntaub ntawv nplua nuj ntawm hemodynamics.
Yog li ntawd, nyob rau hauv tus txheej txheem ntawm ua xim Doppler ultrasound, cov dluab peb pom los yog txawm luam tawm tsis yog tag nrho cov xim, tab sis cov hlab ntsha nyob rau hauv lawv yog xim.
