isithombe se-ultrasound kanye nesithombe se-Doppler ultrasound sombala?
Eminyakeni engaba ngu-20 edlule, amanye amaphayona ayezibophezele ekwethuleni izinhlelo zokuqeqesha ze-ultrasound zakwamanye amazwe, ikakhulukazi lawo avela e-United States, athola inqwaba yemibuzo yokuhlolwa komsebenzi we-ultrasound yaseNyakatho Melika ngemigudu ehlukahlukene.Umbuzo owodwa wempendulo emfushane obuziwe: Uyini umehluko phakathi koMbalaI-ULTRASONOGRAPHYkanye ne-COLOR DOPPLER ULTRASONOGRAPHY?
Uyini umehluko phakathi kwe-color ultrasound imaging kanye ne-Doppler ultrasound imaging yombala?
Lapho nje umbala we-Doppler ultrasound imaging ungena e-China, wabizwa ngokuthi "umbala we-ultrasound".Odokotela baseShayina be-ultrasound bebelokhu befanisa i-ultrasound yombala nombala we-Doppler ultrasound, ngakho i-China yabona le nkinga okokuqala ngqa.Odokotela babebukeka bedidekile bengazi ukuthi umbuzo wawubuzani.
Empeleni, lo ngumbuzo olula kakhulu.
I-Ultrasound yombala ibhekisela ekuboniseni isignali ethile yolwazi lwe-echo phakathi nokuhlolwa kwe-ultrasound ngemithetho ekhethekile yokufaka ikhodi yombala, okuwumfanekiso we-ultrasound wombala.Le mininingwane ethile ye-echo ingaba amandla e-echo, i-Doppler frequency shift, imininingwane yokuqina, imininingwane ye-microbubble, njll.
ngakho.I-Colour Doppler imaging ingenye yezindlela eziningi zokuthwebula ngemibala.Ikhipha ulwazi lokushintsha imvamisa ye-Doppler kulwazi lwe-echo futhi ilubonise ngendlela yokubhala ikhodi.
Ngaphezu komdwebo we-Doppler wombala esiwujwayele, ake sibheke izindlela zokuthwebula ze-ultrasound zombala.
Siyazi ukuthi i-ultrasound enezinhlangothi ezimbili ezimpunga ibonisa ukushuba kwesiginali ye-echo ngendlela yombhalo wekhodi wokukhanya.Uma sifaka imibala endaweni ethile noma konke ukukhanya, sizothola isithombe esinemibala.
Ngenhla: Indawo ethile kusiginali ye-grayscale ibhalwe ngokunsomi (umcibisholo ovulekile), futhi isilonda esinokukhanya okuhambisanayo siphenduka sibe nsomi (okuboniswa umcibisholo oqinile).
Indlela yokuthwebula engenhla ehlanganisa ukushuba kwe-echo ngombala noma amazinga emibala ehlukene yayidume kakhulu e-China isikhathi esithile ekuqaleni kwawo-1990.Yayibizwa ngokuthi "2Dumbala-mbumbuluimaging" ngaleso sikhathi. Nakuba amaphepha amaningi anyatheliswa ngaleso sikhathi, empeleni Inani lesicelo lilinganiselwe kakhulu. Ngaleso sikhathi, izibhedlela eziningi zaze zasebenzisa lesi sithombe ukuze sidlule njenge-Doppler imaging yombala ukukhokhisa iziguli "izimali ze-ultrasound zombala". Kwakungenamahloni ngempela.
Eqinisweni, zonke izimpawu zemibala ekuthwebuleni kwe-ultrasound kombala ziyimibala-mbumbulu, futhi lezi zimpawu zombala zifakwe amakhodi ngokuzenzela futhi zisethwe yithi.
Iningi labakhiqizi bei-ultrasonic elastography, okwamanje ethandwa kakhulu, iphinde ibonise ubulukhuni (noma i-elastic modulus) yezicubu noma izilonda ngendlela enemibala enemibala, ngakho-ke futhi kuwuhlobo lwe-ultrasound yombala.
Ngenhla: I-Shear wave elastography ibonisa imodulus enwebekayo yesilonda ekubhalweni kwesikali sombala.
Uma inani elincane lamabhamuza amancane liqhuma, kuzokhiqizwa umphumela onamandla ongaqondile, ovame ukungahlotshaniswa kahle nokushuba kwe-echo.Sibiza le ndlela yokukhipha ulwazi olungahlobene ukuze kutholwe izithombe ezingahlobene.Ukuthwebula izithombe okungahlobene kusetshenziswa kakhulu ukubonisa amanani amancane kakhulu wamabhamuza amancane futhi kuwusizo kakhulu ocwaningweni lwe-ultrasound oluqondiswe ku-microbubble.Ngokuvamile, lokhu kungahlobanisi nakho kuboniswa ngefomu elinekhodi yombala, ngakho futhi kuwumfanekiso wombala.
Ngenhla: i-p-selectin microbubble-targeted imaging ibonisa ukuthuthukiswa okukhethiwe kodonga lwangaphambili ngemva kwe-ischemia, kanye nezithombe ze-sonographic zenhliziyo ezimfushane ezithuthukisiwe zenhliziyo ku-anterior kwesokunxele okwehla kwe-ischemia-reperfusion kumagundane.
(A) I-ultrasound ye-myocardial ethuthukisiwe yokuqhathanisa ibonisa isici (umcibisholo) we-perfusion yangaphambili phakathi ne-myocardial ischemia.
(B) Ngemuva kwemizuzu engama-45 yokuphindaphinda.Isikali sombala simele ukushuba kwesithombe esingahlobene samabhamuza amancane aqondisiwe.
Isithombe se-blood flow vector ngezansi futhi kuyimodi yesithombe se-ultrasound yombala
Isikhathi sokuthumela: Nov-11-2023
