Ultrasonic kuaj mob
Kev kho mob ultrasonic diagnostic ntsuas yog cov cuab yeej kho mob uas ua ke nrog sonar txoj cai thiab radar thev naus laus zis rau kev kho mob.Lub hauv paus ntsiab lus tseem ceeb yog qhov siab zaus ultrasonic pulse nthwv dej radiates rau hauv lub cev, thiab sib txawv waveforms yog reflected los ntawm txawv interfaces nyob rau hauv lub cev los tsim dluab.Yog li txiav txim siab seb puas muaj qhov txhab hauv lub cev.Ultrasonic diagnostic instrument tau tsim los ntawm thawj ib-dimensional ultrasonic scanning zaub rau ob-dimensional peb-dimensional thiab plaub-dimensional ultrasonic scanning thiab tso saib, uas zoo heev tsub kom lub ncha cov ntaub ntawv thiab ua rau cov kab mob nyob rau hauv lub lom lub cev kom meej thiab yooj yim. paub qhov txawv.Yog li ntawd, nws yuav ntau thiab ntau lug siv nyob rau hauv kev kho mob ultrasonic diagnostic ntsuas.
1. Ib-dimensional ultrasonic scanning thiab tso saib
Hauv cov cuab yeej kuaj mob ultrasonic, tib neeg feem ntau xa mus rau hom A thiab Hom M, uas tau kuaj pom los ntawm ultrasonic pulse-echo nrug ntsuas tshuab, raws li ib qho kev kuaj ultrasonic.Cov kev taw qhia ntawm hom ultrasonic emission no tsis hloov pauv, thiab qhov amplitude lossis grey nplai ntawm lub teeb liab cuam tshuam rov qab los ntawm qhov tsis sib xws impedance interface yog txawv.Tom qab amplification, nws yog tso tawm horizontally los yog vertically ntawm qhov screen.Cov duab no yog hu ua ib-dimensional ultrasonic duab.
(1) Hom A ultrasound scan
Kev sojntsuam (transducer) raws li txoj haujlwm sojntsuam, nyob rau hauv txoj hauv kev ruaj khov rau tib neeg lub cev kom tso tawm ntau megahertz ultrasonic yoj, los ntawm tib neeg lub cev ncha xav thiab ua kom nrov, thiab ncha amplitude thiab cov duab ntawm lub vijtsam zaub.Txoj kab ntsug ntsug ntawm cov khoom qhia pom lub amplitude waveform ntawm lub suab ncha;Muaj ib lub sij hawm thiab nyob deb ntawm lub abscissa.Qhov no tuaj yeem ua raws li qhov chaw ntawm ncha, ncha amplitude, cov duab, yoj tus naj npawb thiab cov ntaub ntawv ntsig txog los ntawm qhov txhab thiab qhov chaw anatomical ntawm qhov kev kuaj mob.A - hom ultrasonic sojntsuam nyob rau hauv Ib txoj hauj lwm ruaj khov tuaj yeem tau txais cov spectrum.
(2) M-hom ultrasound scanner
Qhov kev sojntsuam (transducer) xa thiab tau txais ib lub nqaj ultrasonic rau lub cev nyob rau hauv ib qho chaw ruaj khov thiab kev taw qhia.Lub beam modulates lub ci ntsa iab ntawm txoj kab ntsug scan ntawm cov zaub los ntawm kev hla lub ncha teeb liab ntawm qhov sib txawv qhov tob, thiab nthuav nws nyob rau hauv lub sij hawm txiav txim, tsim ib tug trajectory daim duab ntawm kev txav ntawm txhua qhov taw tes nyob rau hauv ib qhov chaw nyob rau hauv lub sij hawm.Qhov no yog M-hom ultrasound.Nws kuj tseem tuaj yeem nkag siab zoo li: M-hom ultrasound yog ib daim ntawv qhia txog kev hloov pauv ntawm lub sijhawm sib txawv ntawm qhov sib txawv ntawm qhov tob ntawm tib qhov kev taw qhia.M-scan system yog tshwj xeeb tshaj yog haum rau kev kuaj mob ntawm lub cev.Piv txwv li, nyob rau hauv kev ntsuam xyuas ntawm lub plawv, ntau yam ntawm lub plawv tsis ua hauj lwm tsis muaj peev xwm ntsuas tau nyob rau hauv cov duab qhia trajectory, yog li m-hom ultrasound.Kuj tseem hu ua echocardiography.
2. Ob-dimensional ultrasonic scanning thiab tso saib
Vim hais tias ib-dimensional scanning tsuas kuaj tau tib neeg lub cev raws li lub amplitude ntawm ultrasonic rov yoj thiab qhov ceev ntawm ncha nyob rau hauv daim duab, ib-dimensional ultrasound (ib-hom ultrasound) yog heev txwv nyob rau hauv kev kuaj mob ultrasonic.Lub hauv paus ntsiab lus ntawm ob-dimensional ultrasonic scanning imaging yog siv ultrasonic pulse echo, brightness hloov ntawm ob-dimensional grey scale zaub, nws vividly qhia txog cov ntaub ntawv ntawm ib seem ntawm tib neeg lub cev.Ob-dimensional scanning system ua rau lub transducer rau tib neeg lub cev nyob rau hauv ib tug ruaj txoj kev nyob rau hauv lub sojntsuam launched ob peb MHZ ultrasound, thiab rau ib tug tej yam ceev nyob rau hauv ib tug ob-seem qhov chaw, uas yog lub scanned rau ob-seem qhov chaw, ces xa tom qab tib neeg. lub cev los ua kom nrov nrov ncha teeb liab ua kom pom cathode lossis tswj ntawm kab sib chaws, cov zaub ntawm lub teeb pom kev ci ntsa iab hloov nrog qhov loj ntawm cov teeb liab ncha, Daim duab ob sab tomography yog tsim.Thaum tso tawm rau ntawm qhov screen, lub ordinate sawv cev rau lub sij hawm los yog qhov tob ntawm lub suab yoj mus rau hauv lub cev, thaum lub brightness yog modulated los ntawm lub amplitude ntawm ultrasonic ncha nyob rau hauv qhov chaw taw tes, thiab abscissa sawv cev rau cov kev taw qhia ntawm lub suab beam scanning. tib neeg lub cev.
Post lub sij hawm: May-28-2022