Ultrasonic kuongororwa
Medical ultrasonic diagnostic chiridzwa chiridzwa chekurapa chinosanganisa sonar musimboti uye radar tekinoroji yekiriniki application.Iyo yakakosha musimboti ndeyekuti yakakwira frequency ultrasonic pulse wave inopenya mukati memuviri, uye akasiyana mafungu anoratidzwa kubva kwakasiyana mainterface mukati memuviri kugadzira mifananidzo.Kuti uone kana pane maronda mukati memuviri.Iyo ultrasonic diagnostic chiridzwa chakagadzirwa kubva kune yekutanga-dimensional ultrasonic scanning kuratidza kune maviri-dimensional matatu-dimensional uye mana-dimensional ultrasonic scanning uye kuratidza, iyo inowedzera zvakanyanya ruzivo rwe echo uye inoita kuti maronda ari mumuviri webiological ajeke uye nyore siyanisa.Naizvozvo, ichave ichinyanya kushandiswa zvakanyanya mukurapa ultrasonic diagnostic chiridzwa.
1. One-dimensional ultrasonic scanning uye kuratidza
Mumidziyo yekuongorora ye ultrasonic, vanhu vanowanzo nongedzera kumhando A uye Type M, iyo inoongororwa ne ultrasonic pulse-echo kureba yekuyera tekinoroji, seimwe-dimensional ultrasonic bvunzo.Iyo nzira yerudzi urwu rwe ultrasonic emission haina kuchinjika, uye iyo amplitude kana grey chiyero chechiratidzo chinoratidzwa kumashure kubva kune isiri-simultaneous impedance interface yakasiyana.Mushure mekusimudzira, inoratidzwa yakachinjika kana yakatwasuka pachiratidziri.Iyi mhando yemufananidzo inonzi one-dimensional ultrasonic image.
(1) Nyora A ultrasound scan
Probe (transducer) zvinoenderana nenzvimbo yekuferefeta, nenzira yakamisikidzwa kumuviri wemunhu kuburitsa akati wandei megahertz ultrasonic wave, kuburikidza nemuviri wemunhu echo kuratidzwa uye kukwidziridzwa, uye echo amplitude uye chimiro pachiratidziro.Iyo yakatwasuka kurongeka kwechiratidziro inoratidza amplitude waveform yeinoratidzira echo;Pane nguva uye chinhambwe chikero pane abscissa.Izvi zvinogona kunge zvichibva pane iyo echo, echo amplitude, chimiro, wave nhamba uye ruzivo rwakabatana kubva kune ronda uye anatomical nzvimbo yenyaya yekuongororwa.A – type ultrasonic probe muA fixed position inogona kuwana spectrum.
(2) M-mhando ye ultrasound scanner
Iyo probe (transducer) inotapurirana uye inogamuchira ultrasonic danda kumuviri munzvimbo yakagadziriswa uye kutungamira.Iyo danda inogadziridza kupenya kweiyo yakatwasuka scanner mutsara wechiratidziro kuburikidza nekupfuura nepakati echo masaini ezvakadzama zvakasiyana, uye nekuikurisa mukurongeka kwenguva, ichigadzira trajectory dhiyagiramu yekufamba kwenzvimbo yega yega mune imwe-dimensional nzvimbo munguva.Iyi ndiyo M-mode ultrasound.Inogona zvakare kunzwisiswa se: M-mode ultrasound ndeye-dimensional track chati yenguva inochinja pane dzakasiyana dzika mapoinzi munzira imwechete.M - scan system inonyanya kukodzera kuongororwa kwenhengo dzemotokari.Semuenzaniso, mukuongororwa kwemoyo, zvakasiyana-siyana zvemaitiro emwoyo zvinogona kuyerwa pane yakaratidzwa girafu trajectory, saka m-mode ultrasound.Iyo inozivikanwawo se echocardiography.
2. Two-dimensional ultrasonic scanning uye kuratidza
Nekuti imwe-dimensional scanning inogona kungoongorora nhengo dzemunhu zvinoenderana neamplitude ye ultrasonic return wave uye kuwanda kwe echo mugirafu, one-dimensional ultrasound (a-type ultrasound) inogumira zvakanyanya mukuongororwa kwekurapa kwe ultrasonic.Nheyo yeaviri-dimensional ultrasonic scanning imaging ndeye kushandisa ultrasonic pulse echo, kupenya kugadziridzwa kweaviri-dimensional grey scale kuratidza, inonyatsoratidza ruzivo rwechikamu chemuviri wemunhu.Maviri-dimensional scanning system inoita iyo transducer kumuviri wemunhu nenzira yakagadziriswa mukati me probe yakatangwa akati wandei MHZ ultrasound, uye kune imwe spidhi munzvimbo ine mativi maviri, inova iyo yakaongororwa nzvimbo ine mativi maviri, yozotumirwa mushure memunhu. muviri kuti ukudze iyo echo chiratidzo chekugadzirisa kuratidza cathode kana kutonga pagridi, kuratidzwa kwechiedza chemavara kupenya kunoshanduka nehukuru hwechiratidzo cheecho, Mufananidzo we-two-dimensional tomography unogadzirwa.Kana ichitaridzwa pachiratidziri, iyo dhizaini inomiririra nguva kana kudzika kweizwi wave mumuviri, nepo kupenya kuchigadziriswa neamplitude ye ultrasonic echo panzvimbo inoenderana nzvimbo, uye iyo abscissa inomiririra kutungamira kweiyo ruzha muviri wemunhu.
Nguva yekutumira: May-28-2022