I-Ultrasound (i-ultrasound) ngesisekelo sayo ngokuvamile isekelwe emiphumeleni emibili: umphumela wokucabangela amagagasi e-ultrasonic kusuka kumidiya enezinkinga ezahlukene kanye nomphumela we- Doppler . I-ultrasonic wave, okokuqala, i-oscillation engumshini ngevridi yezidumbu ezingaphezu kuka-20 000 ngomzuzwana. E-US evamile - ucwaninga i-ultrasonic wave kusukela engxenyeni ye-emitter engena kumathengi omuntu, ithathwa yibo noma ibonakala.
Ama-tissue ahlukene ahlukile ahlolisisa i-ultrasound: umoya kanye nethambo cishe kubonakala ngokuphelele, futhi ngaphezulu kwezicubu zomswakama, i-wave ijula kalula. Ngaphakathi kwe-liquid medium, ukuqhuma akudluleli kuphela kuphela, kodwa, ngokuphambene, nokukhuliswa kwesignali.
I-wave ebonakalayo ibuyela enensheni futhi iguqulwa ibe isignali kagesi, futhi ngemuva kokucubungula iboniswa kwesikrini sokubonisa ngesimo sesithombe. I-Doplerography iphinda isebenzise amagagasi e-ultrasonic, kodwa ingabonakali ukusuka ezindaweni ezihleliwe, kodwa kusukela ekuhambeni kwezindaba. Okuyinhloko yendlela ukuthi ngokubonisa kusuka kokuthile okuhambayo, i-wave ultrasonic ishintsha imvamisa yayo. Ngokushesha ijubane lokunyakaza - okubonakalayo, futhi ngakho-ke i-Doplerography isetshenziselwa ukukala izinga lokugeleza kweziphuzo ngokusebenzisa izitsha.
Ingabe kuyingozi kwabesifazane abakhulelwe?
Njengoba izidakamizwa ze-ultrasonic ziyimishini, asikho isidingo sokukhuluma nganoma yimiphi imiphumela eyingozi emzimbeni womkhulelwe noma umntwana. Yebo, futhi izinzwa zanamuhla zesikhathi esifushane kakhulu zikhipha umjikelezo, futhi isikhathi esiningi sibheka ukucabangela kwayo (esebenza kwimodi evuthayo). Kodwa ngemodi eqhubekayo ye-ultrasound (ikakhulukazi ohlelweni oluqhubekayo lwe-Doppler), isibonakaliso sithunyelwe isikhathi eside.
Imisebe ye-ultrasound inezimo ezintathu ezigunyazayo, okungafanele zikhohliwe:
- umshini (umphumela we-cavitation nokubunjwa kwamagundane-aphuka emathisini, lapho umonakalo wabo ezingeni eliphansi kungenzeka khona);
- ukushisa (amandla angenayo amaza aphezulu e-tissue aqukethe inani eliningi lamanzi liguqulwa libe izitshalo ezifudumele, ezifudumele kanye nezicubu);
- i-physico-chemical (ukuphuka kwezibopho ze-intramolecular ngaphansi kwethonya le-ultrasound, kuhlanganise nezinga le-DNA).
Njengoba kuvezwa isikhathi eside ku-ultrasound, ikakhulukazi emzimbeni oqhubekayo wokushisa imisebe, noma yimiphi imiphumela emibi ezingxenyeni nasezingxenyeni ze-fetus kungenzeka, ngoba i-ultrasound evamile ngesikhathi sokukhulelwa iyingozi. Ukuhlolwa kwe-Ultrasound akunakwenziwa kaningi, futhi ukulandelana kwezinto ezenziwe nge-placenta kanye nesisu kunesibindi ngokulandela izinkomba.
Kulimala kangakanani i-ultrasound ekukhulelwe?
Cishe wonke owesifazane okhulelwe, esezi ukuthi ngesikhathi sokukhulelwa kufanele ahlole ukuhlola okungu-3 ukuhlolwa kwe-ultrasound, uzocabanga ukuthi i-ultrasound iyingozi noma cha. Noma yimuphi umthelela emzimbeni, kuhlanganise ne-ultrasound, njalo unemiphumela ethile. Kodwa uma engabalulekile kakhulu ukuthi inzuzo enkulu kakhulu kunokulimala kwe-ultrasound ngesikhathi sokukhulelwa (imiphumela ingase ingenzeki noma ingenzeki), kufanelekile ukucabangela, futhi yini eyenziwa yi-ultrasound?
Ukuhlolwa akuhlosiwe kuphela ukuthola ukuthi ubude bokukhulelwa noma ukusungula ubulili bomntwana - okwesibili kaningi akukhathaleli udokotela, kanti owokuqala ungasungulwa ezinye izindlela zokucwaninga. Ukuhlolwa kwe-Ultrasound kungabonisa ukukhubazeka kokukhulelwa kanye nengane ngokwayo, kodwa akuyona leyo engase ibe khona, kodwa leyo ekhona kakade.
Okokuqala, i-ultrasound iqinisekisa ukukhulelwa kwe-uterine, isiza ukuxilonga ukukhulelwa kwangaphambi kwesikhathi, ukukhubazeka okukhulu kwe-fetus (isibonelo, ukungenwa kwe-fetus - ukuntuleka kobuchopho), nezinye izinto ezimbi (ukuntuleka kwezitho zomzimba, ukukhubazeka kwenhliziyo), ngokwemibandela kamuva kubonisa isimo iphrezenta nesethulo sesisu.
Kungakhathaliseki ukuthi kuyingozi ukwenza i-ultrasound kaningi ngenye indaba, kodwa ukuhlola okungu-3 (emavikini angu-11-14, emavikini angu-18-21 nasemasontweni angama-30-32) kumele kudluliselwe ngempela ngesikhathi sokuthola ukukhubazeka okunzima kokukhulelwa kanye nokukhubazeka kokuthuthukiswa komntwana, uma kuqhathaniswa lapho umbuzo wokuthi i-ultrasound inobungozi ekukhuleleni, awuvuki ngisho nokuvuka.