A cikin binciken PW Doppler na tasoshin gefe, ana gano ingantacciyar kwararar jini ta hanya ɗaya a sarari, amma ana iya samun bakan hoton madubi a cikin spectrogram.Rage ƙarfin sauti mai watsawa yana rage gaba da jujjuya yanayin kwararar jini zuwa daidai gwargwado, amma baya sa fatalwa ta ɓace.Sai kawai lokacin da aka daidaita mitar fitarwa, ana iya samun bambanci.Mafi girman mitar fitar da hayaki, zai fi bayyana bakan hoton madubi.Kamar yadda aka nuna a cikin adadi mai zuwa, bakan kwararar jini a cikin jijiya na carotid yana gabatar da bakan madubi.Ƙarfin madaidaicin madaidaicin bakan hoton madubi yana ɗan rauni kaɗan fiye da ingantaccen yanayin kwararar jini, kuma saurin gudu ya fi girma.Me yasa wannan?
Kafin nazarin fatalwowi, bari mu bincika katako na duban dan tayi.Domin samun ingantacciyar kai tsaye, katako na sikanin ultrasonic yana buƙatar mai da hankali ta hanyar sarrafa jinkiri daban-daban na abubuwa da yawa.An raba katako na ultrasonic bayan mayar da hankali zuwa babban lobe, lobe na gefe da lobe na ƙofar.Kamar yadda aka nuna a kasa.
Babban lobes na gefe ko da yaushe suna wanzu, amma ba gating lobes ba, wato, lokacin da kusurwar gating lobe ya fi digiri 90, babu gating lobes.Lokacin da kusurwar lobe ɗin gating ya kasance ƙarami, girman girman gating yakan fi girma fiye da lobe na gefe, kuma yana iya zama tsari ɗaya na girma da babban lobe.Tasirin gefen lobe na grating da lobe na gefe shine cewa siginar tsangwama wanda ya karkata daga layin dubawa yana kan babban lobe, wanda ke rage bambancin ƙudurin hoton.Sabili da haka, don inganta ƙaddamar da bambanci na hoton, girman girman lobe na gefe ya kamata ya zama ƙananan kuma kusurwar gating lobe ya zama babba.
Dangane da dabarar babban kusurwar lobe, mafi girman budewar (W) kuma mafi girman mita, mafi kyawun babban lobe shine, wanda ke da fa'ida don haɓaka ƙudurin gefen gefen hoton B-yanayin.Dangane da cewa adadin tashoshi ya kasance akai-akai, mafi girman tazarar kashi (g) shine, girman buɗewar (W) zai kasance.Koyaya, bisa ga dabarar kusurwar gating, kusurwar gating shima zai ragu tare da karuwar mitar (tsawon raƙuman raƙuman ruwa) da haɓakar tazarar abubuwa (g).Karamin kusurwar gating lobe, mafi girman girman gating lobe amplitude.Musamman lokacin da aka karkatar da layin binciken, girman babban lobe zai ragu tare da matsayi na babban lobe ya karkata daga tsakiya.A lokaci guda kuma, matsayi na gating lobe zai kasance kusa da tsakiya, don haka girman girman gating zai kara karuwa, har ma ya sanya lobes masu yawa a cikin filin kallo.
Lokacin aikawa: Fabrairu-07-2022
