I-Doppler Color Ultrasound: Vumela isifo singabi nendawo yokufihla

I-Cardiac Doppler ultrasound yindlela yokuhlola esebenzayo kakhulu yokuxilongwa kweklinikhi yesifo senhliziyo, ngakumbi isifo senhliziyo sokuzalwa. Ukususela ngo-1980, iteknoloji yokuxilonga i-ultrasound iqalile ukuphuhlisa ngesantya esimangalisayo. Njengomfanekiso wemagnethi ye-resonance, i-CT kunye ne-isotope scanning, i-cardiac Doppler ultrasound inendawo kwiitekhnoloji ezine zokuxilonga ezinkulu kumayeza anamhlanje.
I-Cardiac Doppler ultrasound yenye yezona zinto zibalulekileyo zetekhnoloji yovavanyo lwe-imaging kuvavanyo lwentliziyo olungaphazamisiyo. Le teknoloji yeemviwo ayinayo nje inzuzo yokungabi nantlungu, ukuphindaphinda, ukungabi nabungozi kunye nokulula, kodwa kwakhona kuneziphumo ezicacileyo nezichanekileyo zeemviwo kunezinye iimviwo ze-imaging. Emva kweminyaka eliqela yokunyuselwa, i-cardiac Doppler ultrasound iye yaba sisixhobo esiyimfuneko sokuxilonga kumayeza anamhlanje.
Ngokuqhelekileyo, ukuba isiphumo sokubhaqa sinqongophele nje, akukho nyango lukhethekileyo olufunekayo. Ukuba ukuhluleka kwentliziyo ephakathi okanye enzima, unyango kufuneka luqhutywe ngokukhawuleza ukukhusela utshintsho kwisakhiwo sentliziyo yesigulane kunye nokwenzeka kweengxaki ezinzulu. Kuvavanyo lwe-cardiomyopathy, i-cardiac Doppler ultrasound inokumisela iqondo le-myocardial hypertrophy kunye nokwandiswa kwegumbi lentliziyo kwizigulane; kwizigulane ezine-coronary heart disease, i-cardiac Doppler ultrasound ingabonisa intuitively indawo ye-myocardial ischemia, inceda oogqirha ukuba baphuhlise izicwangciso ezifanelekileyo zonyango ngokwemiqathango ethile yezigulane. Izifo eziphambili ezifunyenwe yi-cardiac Doppler ultrasound zibandakanya izilonda ze-aortic (ezifana nezilonda ezifana ne-aortic stenosis), izifo ze-valve zentliziyo (ezifana nezilonda ze-mitral valve, i-stenosis, njl.), izifo ze-ventricular, njl.
I-Cardiac Doppler ultrasound ayikwazi ukubonisa kuphela ukuhanjiswa kwegazi okungaqhelekanga kwi-cardiac cavity, kodwa iphinda ibonise indlela kunye nesikhokelo sokuhamba kwegazi kwi-cardiac ukuya kwinqanaba elithile. Iyakwazi ukumisela ukuba uhlobo lokuhamba kwegazi lwentliziyo kukuhamba kwe-laminar, ukuhamba kwe-turbulent okanye ukuhamba kwe-eddy, kwaye inokulinganisa i-contour, indawo, ubude kunye nobubanzi obuthile be-blood flow beam. I-Cardiac Doppler ultrasound ingabonakalisa ngokuthe ngqo ubudlelwane phakathi kwesakhiwo esingaqhelekanga senhliziyo kunye ne-hemodynamics yenhliziyo engaqhelekanga ngokubonisa ulwazi lokuhamba kwegazi kwi-diagram ye-dimensional cross-sectional diagram. Bonke abantwana abarhanelwa ukuba banesifo sentliziyo kufuneka benze uviwo lwe-ultrasound ye-Doppler ukuze baqonde uphuhliso oluthile lwesi sifo.