Ultrasound imaging thiab xim Doppler ultrasound imaging?
Kwv yees li 20 xyoo dhau los, qee cov pioneers uas tau cog lus los qhia cov kev cob qhia txawv teb chaws ultrasound, tshwj xeeb tshaj yog cov neeg tuaj ntawm Tebchaws Meskas, tau txais ib pawg ntawm North American ultrasound xeem cov lus nug los ntawm ntau txoj hauv kev.Ib nqe lus teb luv luv nug: Qhov txawv ntawm COLOR yog dab tsiULTRASONOGRAPHYthiab COLOR DOPPLER ULTRASONOGRAPHY?
Dab tsi yog qhov txawv ntawm xim ultrasound duab thiab xim Doppler ultrasound imaging?
Sai li xim Doppler ultrasound duab nkag mus rau Tuam Tshoj, nws raug xa mus rau "xim ultrasound".Suav cov kws kho mob ultrasound yeej ib txwm sib npaug xim ultrasound nrog xim Doppler ultrasound, yog li Tuam Tshoj pom qhov teeb meem no thawj zaug.Cov kws kho mob saib tsis meej pem thiab tsis paub cov lus nug yog dab tsi.
Qhov tseeb, qhov no yog ib lo lus nug yooj yim heev.
Xim ultrasound hais txog kev nthuav tawm cov teeb liab tshwj xeeb ntawm cov ntaub ntawv ncha thaum lub sijhawm kuaj ultrasound nrog cov cai tshwj xeeb xim coding, uas yog xim xim ultrasound.Cov ntaub ntawv tshwj xeeb no tuaj yeem yog ncha siv, Doppler zaus hloov, cov ntaub ntawv hardness, cov ntaub ntawv microbubble, thiab lwm yam.
yog li ntawd.Xim Doppler imaging tsuas yog ib qho ntawm ntau hom xim duab.Nws rho tawm Doppler zaus hloov cov ntaub ntawv los ntawm cov ntaub ntawv ncha thiab qhia nws hauv daim ntawv xim coding.
Ntxiv rau cov xim Doppler imaging uas peb paub, cia peb saib cov xim ultrasound imaging hom.
Peb paub tias ob-dimensional grey-scale ultrasound qhia qhov kev siv ntawm lub ncha teeb liab nyob rau hauv daim ntawv ntawm brightness encoding.Yog hais tias peb xim-code ib cheeb tsam los yog tag nrho cov brightness, peb yuav tau ib tug xim-coded duab.
Saum toj no: Ib qho chaw tshwj xeeb hauv cov teeb liab grey yog encoded hauv ntshav (qhib xub), thiab qhov txhab nrog cov ci ci sib xws hloov ntshav (pom los ntawm cov xub xub).
Txoj kev yees duab saum toj no uas encodes ncha siv hauv cov xim lossis xim sib txawv tau nrov heev hauv Suav teb rau ib lub sijhawm thaum ntxov 1990s.Nws hu ua "2Dpseudo-ximimaging" nyob rau lub sijhawm ntawd, Txawm hais tias muaj ntau cov ntaub ntawv tau luam tawm nyob rau lub sijhawm ntawd, qhov tseeb Daim ntawv thov tus nqi muaj tsawg heev. Thaum lub sijhawm ntawd, ntau lub tsev kho mob txawm siv cov duab no kom dhau los ua xim Doppler imaging kom them cov neeg mob "cov nqi ultrasound". Nws tsis txaj muag kiag li.
Qhov tseeb, tag nrho cov xim teeb liab ntawm xim ultrasound duab yog pseudo-xim, thiab cov xim teeb liab no yog tsim los ntawm peb.
Feem ntau manufacturers ntawmultrasonic elastography, uas yog tam sim no nrov heev, kuj tso saib qhov hardness (los yog elastic modulus) ntawm cov ntaub so ntswg los yog qhov txhab nyob rau hauv ib tug xim-coded daim ntawv, yog li nws kuj yog ib hom xim ultrasound.
Saum toj no: Shear yoj elastography qhia cov elastic modulus ntawm qhov txhab nyob rau hauv cov xim scale coding.
Thaum ib qho me me ntawm microbubbles tawg, cov nyhuv nonlinear muaj zog yuav raug tsim, uas feem ntau tsis muaj kev cuam tshuam zoo nrog lub ncha siv.Peb hu rau hom no ntawm kev rho tawm cov ntaub ntawv tsis muaj feem cuam tshuam rau kev kos duab tsis sib xws.Cov duab tsis sib thooj feem ntau yog siv los tso saib me me ntawm microbubbles thiab tseem ceeb heev hauv microbubble-targeted ultrasound tshawb fawb.Feem ntau, qhov kev sib raug zoo no kuj tshwm sim hauv daim ntawv xim xim, yog li nws kuj yog xim duab.
Saum toj no: p-selectin microbubble-targeted imaging qhia kev xaiv txhim kho ntawm phab ntsa sab nrauv tom qab ischemia, thiab myocardial contrast-enhanced sonographic cardiac luv-axis duab nyob rau hauv sab laug anterior descending ischemia-reperfusion hauv nas.
(A) Myocardial contrast-enhanced ultrasound qhia tau hais tias muaj kev cuam tshuam anterior perfusion ( xub) thaum lub sij hawm myocardial ischemia.
(B) Tom qab 45 feeb ntawm reperfusion.Cov xim nplai sawv cev rau qhov kev siv ntawm cov duab tsis sib thooj ntawm lub hom phiaj microbubbles.
Cov ntshav khiav vector imaging hauv qab no kuj yog xim ultrasound imaging hom
Post lub sij hawm: Nov-11-2023
