Kev Ntsuas Xim Doppler: Nws Qhia Dab Tsi Txog Kev Ntws Ntshav, thiab Dab Tsi Nws Ua Tsis Tau

Tus yuam sij takeaways

• Xim Doppler qhia txog kev ntws ntshav; nws tsis qhia txog txhua yam kab mob ntawm lub cev thiab tsis yog qhov hloov pauv rau angiography.
• Qhov kev luam theej yog nyob ntawm tus neeg teb xov tooj, thiab qhov zoo ntawm daim duab poob qis nrog kev rog dhau, pa phem hauv plab, o, cov qhov txhab, cov qhov txhab thiab cov hlab ntsha tob.
• Daim ntawv qhia Doppler "ib txwm" txhais tau tias tsis pom muaj dab tsi txawv txav hauv cov ntu uas tau kuaj xyuas, nws tsis suav nrog kab mob lwm qhov.
• Cov kev kuaj Doppler sib txawv (venous, arterial, carotid, obstetric, renal, scrotal, echo) yog cov kev kuaj sib txawv nrog cov txheej txheem thiab kev npaj sib txawv.
• Hauv Is Nrias teb, txhua yam Doppler ua thaum cev xeeb tub yog tswj hwm los ntawm PC-PNDT Act, 1994; kev txiav txim siab poj niam txiv neej yog kev ua txhaum cai.

Ib nrais muag

Kuj hu ua

• Xim Doppler ultrasound / xim Doppler (Tebchaws Asmeskas sau ntawv)
• Kev tshawb nrhiav Doppler, Doppler scan, Doppler xeem
• Kev luam theej duplex lossis triplex scan (greyscale + xim + spectral Doppler)
• Kev kuaj mob ntawm cov hlab ntsha hauv lub cev; "USG Doppler"; "Kev kuaj mob ntawm cov hlab ntsha hauv lub cev"
• Venous Doppler rau cov ntshav txhaws feem ntau hu ua Kev kuaj mob DVT hauv kev xyaum ua hauv Is Nrias teb
• Obstetric Doppler feem ntau hu ua fetal Doppler los yog "kev ntsuas kev loj hlob nrog Doppler"
• Xim Doppler ntawm lub plawv yog ib feem ntawm kev ntsuam xyuas echo (2D echo nrog xim Doppler)

Kev kuaj xim Doppler yog dab tsi

Lub tshuab ultrasound greyscale ib txwm qhia txog cov qauv. Lub tshuab ultrasound Doppler ntxiv cov ntaub ntawv hais txog kev txav mus los. Thaum cov suab nthwv dej tawm ntawm cov qe ntshav liab uas txav mus los, lawv qhov zaus hloov pauv. Lub tshuab hloov qhov kev hloov pauv ntawd mus rau hauv:

• Xim Doppler: ib daim xim qhia seb cov ntshav puas txav mus rau lossis txav deb ntawm lub tshuab ntsuas, thiab kwv yees li ceev npaum li cas. Liab thiab xiav qhia txog kev taw qhia piv rau lub tshuab ntsuas, tsis yog cov hlab ntsha piv rau cov leeg ntshav.
• Spectral (pulsed-wave) Doppler: ib qho waveform thiab cov lej velocities, siv los ntsuas qib nqaim thiab xam cov ntsuas xws li cov ntsuas resistive lossis umbilical pulsatility index.
• Lub zog Doppler: rhiab heev rau qhov ntws qeeb tab sis tsis muab cov ntaub ntawv qhia kev.

Feem ntau cov ntawv ceeb toom uas muaj npe "xim Doppler" yog qhov tseeb duplex lossis triplex kev tshawb fawb sib txuas tag nrho cov no nrog greyscale imaging.

Vim li cas thiaj ua qhov kev xeem Doppler xim

• Xav tias muaj cov hlab ntsha tob tob thrombosis: o ib sab ceg, mob plab hlaub lossis mob nqaij.
• Kab mob ntawm cov leeg ntawm lub cev: mob claudication, mob so, mob qog nqaij hlav tsis kho, ko taw txias lossis tsis muaj xim.
• Varicose leeg: kev kos duab reflux ua ntej kev kho mob.
• Kev ntsuam xyuas ntawm cov hlab ntsha carotid thiab vertebral: tom qab mob stroke lossis transient ischaemic attack, lossis rau qhov mob caj dab.
• Cev xeeb tub: Cov hlab ntsha hauv lub umbilical, cov hlab ntsha hauv lub hlwb nruab nrab thiab cov hlab ntsha hauv lub tsev menyuam Doppler nyob rau hauv kev txwv kev loj hlob, kev pheej hmoo ntawm pre-eclampsia lossis txo qis kev txav mus los ntawm menyuam hauv plab.
• Mob plab thiab mob raum: kev qhib ntawm cov hlab ntsha portal hauv kab mob siab, kev hloov pauv raum perfusion, uas xav tias yog cov hlab ntsha renal stenosis.
• Scrotal: xav tias muaj qhov torsion ntawm testicular lossis varicocele.
• Lub Plawv: kev rov qab qhib thiab stenosis ntawm lub valve, shunts (ua ib feem ntawm echocardiography).
• Kev saib xyuas kev nkag mus: arteriovenous fistula rau dialysis.

Leej twg yuav tsum tau txais qhov kev xeem no

Kev kuaj xim Doppler yog qhov tsim nyog thaum tus kws kho mob muaj lus nug tshwj xeeb txog kev ntws ntshav. Nws tsis yog kev kuaj xyuas kev noj qab haus huv dav dav. Cov pab pawg uas feem ntau pom muaj xws li:

• Cov neeg uas mob sai sai ntawm ib ceg lossis ib sab caj npab, tshwj xeeb tshaj yog tom qab phais mob, tsis txav tau, mus ncig ua si ntev, cev xeeb tub lossis mob qog noj ntshav.
• Cov neeg uas muaj ntshav qab zib lossis muaj keeb kwm haus luam yeeb ntev uas mob ceg thaum taug kev, ko taw txias lossis mob qog ko taw uas tsis kho.
• Cov neeg uas tau muaj mob stroke, mob stroke me me lossis qhov muag tsis pom kev ib ntus, rau kev ntsuam xyuas carotid.
• Cov poj niam cev xeeb tub uas xav tias tus menyuam hauv plab loj hlob qeeb, ntshav siab thaum cev xeeb tub lossis tus menyuam hauv plab txav tsis zoo, thaum tus kws kho mob tshwj xeeb qhia nws.
• Cov neeg uas muaj kab mob siab ntev, ntshav siab portal, lossis ua ntej thiab tom qab hloov siab lossis raum.
• Cov txiv neej uas muaj mob hnyav heev ntawm lub qhov zis (mob ceev) lossis muaj menyuam tsis taus lossis lub qhov zis hnyav (mob ib txwm muaj).
• Cov neeg uas tau txais kev ntxuav ntshav nrog lub qhov quav ua haujlwm tsis zoo.

Feem ntau tsis pom zoo kom kuaj Doppler tsis tu ncua rau cov neeg uas tsis muaj tsos mob lossis muaj feem yuav ua rau muaj kev pheej hmoo, vim nws ua rau muaj kev tshawb pom tsis meej uas ua rau muaj kev ntxhov siab thiab kev kuaj ntxiv yam tsis muaj txiaj ntsig zoo.

Qhov kev kuaj xim Doppler tsis tuaj yeem ntes lossis tsis suav nrog dab tsi

Qhov no yog qhov feem ntau ntawm cov ntawv ceeb toom tsis tau hais tawm.

• Nws tsis thaij duab cov hlab ntsha hauv lub plawv. Lub tshuab Doppler xim thaum lub sijhawm ua echo ntsuas qhov valve thiab cov dej ntws hauv chav. Lub echo ib txwm muaj nrog lub tshuab Doppler xim tsis suav nrog kab mob ntawm cov hlab ntsha hauv lub plawv. Mob hauv siab yuav tsum tau kuaj xyuas cais.
• Nws tsis tuaj yeem tshem tawm cov kab mob pulmonary embolism. Yog tias lub tshuab Doppler ntawm cov hlab ntsha hauv ceg tsis pom qhov twg, ces yuav tsis muaj cov ntshav txhaws hauv lub ntsws. Yog tias ua tsis taus pa lossis mob hauv siab, yuav tsum tau kuaj CT pulmonary angiography lossis lwm txoj kev kuaj.
• Cov leeg nqaij nyuj thiab cov leeg ntawm lub plab mog yog thaj chaw txwv. Feem ntau cov hlab ntsha calf-vein thiab iliac-vein thrombi raug cais tawm. Muaj ntau lub chaw kuaj xyuas cov hlab ntsha proximal xwb thiab rov ua qhov kev tshawb fawb tom qab ob peb hnub yog tias tseem muaj kev txhawj xeeb.
• Cov hlab ntsha hauv plab tob tob yog tawv. Cov hlab ntsha hauv lub raum thiab mesenteric Doppler feem ntau tsis tiav vim yog cov pa roj hauv plab thiab lub cev nyob hauv lub cev; kev tshawb fawb ib txwm tsis suav nrog cov hlab ntsha hauv lub raum stenosis, thiab CT lossis MR angiography tej zaum yuav xav tau.
• Cov pob zeb calcification hnyav ua suab nrov. Hauv cov hlab ntsha uas muaj calcified hnyav, uas feem ntau tshwm sim hauv ntshav qab zib thiab kab mob raum ntev, qhov ceev yuav tsis ntsuas tau thiab qhov nqaim ntawm cov hlab ntsha tsis tuaj yeem ntsuas tau.
• Nws tsis qhia cov phab ntsa hlab ntsha zoo li CT lossis MR angiography ua., thiab nws tsis tuaj yeem kos duab tag nrho cov ntoo ntawm cov hlab ntsha rau kev npaj phais hauv ib zaug dhau.
• Nws tsis tuaj yeem ua rau cov ntshav khov laus sai sai los yog ib txwm paub qhov txawv ntawm mob hnyav los ntawm mob thrombus ntev.
• Thaum cev xeeb tub nws tsis qhia meej tias yuav muaj li cas. Kev ntsuas Doppler ntawm cov hlab ntsha hauv plab txo qis tab sis tsis tshem tawm qhov kev pheej hmoo; qhov kev kuaj no tsis tuaj yeem zam qhov kev puas tsuaj tom qab.
• Nws tsis tuaj yeem txiav txim siab qhov kev qhia txog poj niam txiv neej ntawm tus menyuam hauv Is Nrias teb: thiab los ntawm txoj cai qhov no yuav tsum tsis txhob raug qhia tawm.
• Nws tsis kuaj mob qog noj ntshav. Cov hlab ntsha uas ntau ntxiv hauv ib lub pob tsis yog qhia tias tsis muaj dab tsi ntawm nws tus kheej; kev kuaj mob nqaij yog cais.

Ib qho kev tshawb pom piav qhia tias "tsis pom" lossis "tsis pom" txhais tau tias nws tsis tau pom tseeb hauv cov ntu uas tau kuaj xyuas raws li cov xwm txheej ntawm hnub ntawd. Qhov ntawd tsis zoo ib yam li kev tshem tawm. Yog tias koj cov tsos mob tseem muaj lossis hnyav zuj zus txawm tias Doppler ib txwm muaj, rov qab mus rau tus kws kho mob uas tau thov nws.

Kev ntsuam xyuas sib txuas tab sis sib txawv

Kev kuaj twg yuav ua ntej nyob ntawm qhov teeb meem kev kho mob, tsis yog qhov kev kuaj twg "zoo dua". Rau cov ceg o, venous Doppler feem ntau yog qhov kev kuaj thawj zaug uas tsim nyog. Rau claudication, ankle-brachial index thiab arterial duplex feem ntau yuav ua ntej, nrog rau CT lossis MR angiography yog tias npaj yuav kho. Rau cov neeg laus uas xav tias muaj renal artery stenosis, cross-sectional angiography feem ntau ua tau zoo dua li Doppler. Rau mob hauv siab, kev kuaj Doppler tsuas teb ib feem ntawm cov lus nug xwb.

Yuav npaj li cas

Kev npaj yog ib qho teeb meem ua haujlwm thiab txawv ntawm cov chaw luam theej duab thiab ntawm cov tshuab. Cov lus qhia uas lub chaw ua koj qhov kev luam theej duab muab yog qhov tseem ceeb dua txhua yam uas sau ntawm no.

• Doppler ntawm ceg, carotid thiab scrotal: feem ntau tsis pub yoo mov. Hnav khaub ncaws xoob; ceg lossis caj dab yuav tsum tsis txhob nthuav tawm. Tsis txhob siv tshuaj pleev rau thaj chaw ntawd.
• Doppler ntawm lub plab, lub raum, lossis lub portal: ntau chav tsev thov kom muaj ib lub sijhawm yoo mov kom txo tau cov pa roj hauv plab. Qhov ntev ntawm qhov no sib txawv.
• Obstetric Doppler: thaum cev xeeb tub tom qab feem ntau tsis tas yuav muaj lub zais zis puv. Tej zaum yuav xav tau kev kuaj cev xeeb tub thaum ntxov.
• Nqa cov kev luam theej yav dhau los, angiograms thiab cov ntsiab lus tawm hauv tsev kho mobkev sib piv hloov kev txhais lus ntau dua li feem ntau cov neeg mob xav tau.
• Tsis txhob tsum tsis txhob siv cov tshuaj anticoagulants, antiplatelets, antihypertensives lossis lwm yam tshuaj uas kws kho mob tau sau tseg. rau kev ntsuas Doppler. Yog tias muaj ib tug neeg hais tias koj yuav tsum ua li ntawd, nrog tus kws kho mob sau ntawv tham ua ntej.

Yog koj muaj mob ntshav qab zib uas tab tom kho mob kom txo cov piam thaj (glycolysis)

Kev yoo mov ntev dhau yuav ua rau muaj ntshav qab zib tsawg, tshwj xeeb tshaj yog thaum noj tshuaj insulin lossis sulfonylurea. Qhia rau lub chaw kho mob ua ntej, thov kom teem sijhawm ua ntej, thiab nug koj tus kws kho mob seb yuav noj cov tshuaj thaum sawv ntxov li cas. Nqa cov piam thaj nrog koj.

Yog tias koj muaj mob plawv tsis ua haujlwm, mob raum ntev lossis kev txwv dej

Tsis txhob haus dej ntau ntau kom puv lub zais zis tsuas yog koj tus kws kho mob tau pom zoo xwb. Qhia rau lub chaw kuaj mob txog koj cov dej haus uas koj haus tau; feem ntau daim duab scan yuav hloov kho tau.

Hauv plab

Feem ntau tsis txhob yoo mov ntev. Lub tshuab Doppler rau obstetric yuav tsum tau ua tsuas yog thaum muaj kev qhia txog kev kho mob, los ntawm lub chaw sau npe, nrog rau daim ntawv PC-PNDT Daim Ntawv F ua tiav.

Hauv menyuam yaus

Cov cai ntawm kev yoo mov txawv heev rau cov menyuam mos thiab cov menyuam yaus thiab yuav tsum los ntawm pab pawg kws kho mob menyuam yaus. Feem ntau niam txiv nyob hauv chav.

Cov neeg laus thiab cov neeg uas muaj kev txwv tsis pub txav mus los

Muaj tej kev tshawb fawb uas xav tau sawv ntsug lossis zaum ntev, piv txwv li kev kos duab ntawm cov leeg ntshav uas muaj ntau dhau. Qhia rau chav kho mob ua ntej kom thiaj li npaj tau kev pab.

Muaj dab tsi tshwm sim thaum lub sijhawm xeem

• Koj pw saum lub rooj zaum; qhov chaw nyob sib txawv, nyob tom qab rau kev kawm plab, nrog rau ceg tig sab nraud rau kev kawm txog cov leeg ntshav, sawv ntsug lossis ntawm lub rooj qaij rau kev kos duab cov leeg ntshav rov qab los.
• Siv cov gel sov. Cov gel no xav tau rau kev xa suab thiab nws yuav txias lossis nplaum.
• Tus kws kho mob lossis tus kws kho mob txav lub cuab yeej ntsuas mus rau thaj chaw ntawd, nias ib ntus ib ntus. Hauv kev tshawb nrhiav txog cov hlab ntsha, cov hlab ntsha raug nias ntau zaus kom paub tseeb tias nws puas tawg.
• Tej zaum koj yuav hnov ​​​​​​lub suab nrov "whooshing" lossis lub suab dhia. Qhov no yog lub teeb liab Doppler, thiab nws yog qhov xav tau.
• Tej zaum yuav hais kom koj ua pa, tuav koj txoj pa, hnoos, lossis nias lub plab nyuj, kom ua rau muaj kev hloov pauv ntawm cov dej ntws.
• Tom qab ntawd, cov gel yuav raug so tawm. Koj tuaj yeem rov ua dua cov dej num ib txwm tam sim ntawd tshwj tsis yog tias koj tau ua ib qho kev kho mob.

Cov txheej txheem siv sijhawm ntev npaum li cas

• Ib ceg ntawm cov hlab ntsha Doppler: feem ntau li ntawm 20-30 feeb.
• Kev tshawb nrhiav txog cov hlab ntsha lossis cov leeg ntawm ob sab ceg: feem ntau yog 40-60 feeb.
• Carotid duplex: feem ntau yog 20-30 feeb.
• Doppler ntawm lub plab los yog lub raum: feem ntau yog 30-45 feeb, ntev dua thaum muaj teeb meem roj hauv plab.
• Obstetric Doppler ua ib feem ntawm kev ntsuas kev loj hlob: feem ntau yog 20-40 feeb, ntev dua yog tias tus menyuam nyob rau hauv qhov chaw tsis xis nyob.

Ntxiv sijhawm rau kev sau npe, hloov pauv thiab tos. Kev tshawb fawb nyuaj tuaj yeem siv sijhawm ntev dua; qhov no feem ntau qhia txog qhov nyuaj ntawm kev siv tshuab, tsis yog xov xwm phem. Kev muaj daim ntawv qhia txawv ntawm cov chav, thiab kev tshawb fawb ceev hauv tsev kho mob feem ntau raug tshaj tawm sai dua li cov kev tshawb fawb sab nraud.

Kev nkag siab txog koj daim ntawv qhia

Daim ntawv qhia Doppler feem ntau piav qhia txog cov ntu uas tau kuaj xyuas, seb puas muaj dej ntws, seb cov leeg ntshav puas raug nias, cov duab nthwv dej, thiab qhov ceev. Cov lus siv feem ntau suav nrog:

• Patent / tsis-compressible: "Patent" txhais tau tias qhov ntws tau pom tseeb. Cov leeg ntshav uas yuav tsis nias hauv qab lub tshuab ntsuas qhia tau tias muaj thrombus.
• Echogenic thrombus: cov khoom ntshav uas pom tseeb hauv cov leeg ntshav.
• Qhov ceev ntawm lub plawv dhia siab tshaj plaws (PSV): nce ntawm qhov nqaim. Cov piv ntawm cov ntu tseem ceeb dua li cov lej ib leeg.
• Waveform monophasic / biphasic / triphasic: piav qhia txog tus qauv ntws ntawm cov hlab ntsha. Kev poob ntawm tus qauv ntau theem ib txwm qhia txog kab mob loj heev, txawm hais tias cov hlab ntsha laus thiab cov hlab ntsha tawv kuj hloov nws.
• Cov ntsuas tiv taus (RI): siv rau hauv kev ua haujlwm raum thiab hloov pauv. RI tsis yog qhov tshwj xeeb thiab cuam tshuam los ntawm lub plawv dhia, ntshav siab thiab hnub nyoog.
• Reflux: Cov ntshav ntws rov qab mus rau qhov chaw ntawm cov hlab ntsha, uas cuam tshuam rau cov hlab ntsha varicose.
• Cov hlab ntsha Umbilical PI, tsis muaj lossis rov qab ntws thaum kawg ntawm diastolic: kev tshawb pom txog kev yug me nyuam uas tau txhais ua ke nrog kev loj hlob, cawv thiab cardiotocography, yeej tsis nyob ib leeg.

Cov lus ntsuas qib xws li "me me", "nruab nrab" lossis "tseem ceeb" yog ib feem ntawm tus neeg mob xav tau thiab nyob ntawm tus neeg teb xov tooj, qhov chaw teeb tsa ntawm lub tshuab thiab cov qauv uas lub tshuab siv. Ob lub tshuab tuaj yeem ntsuas qib tib lub hlab ntsha sib txawv. Cov lej ntawm daim ntawv qhia tsis yog kev kuaj mob. Cov txiaj ntsig sib txawv nyob ntawm tus kheej qhov xwm txheej, thiab kev txhais lus yog rau tus kws kho mob uas tau thov kom kuaj.

Thaum cov txiaj ntsig tuaj yeem ua rau neeg nkag siab yuam kev

Cov kev tshawb pom uas tuaj yeem ua rau muaj kev ntseeg siab cuav (kab mob tsis raug hu ua)

• Kev rog dhau heev, oedema ntawm ob txhais ceg, plaster cam khwb cia, ntaub qhwv lossis subcutaneous emphysema txo cov cim thiab tuaj yeem zais thrombus lossis stenosis.
• Cov pa roj hauv plab ua rau cov hlab ntsha hauv plab tsis tuaj yeem ntsuas tau, yog li ntawd tsis pom kab mob.
• Qhov calcification ntom ntom ua rau muaj acoustic shadowing; ib qho stenosis tom qab nws tuaj yeem tsis pom.
• Yog tias cov kev teeb tsa ntawm lub tshuab tsis tau kho kom zoo, qhov ntws qeeb heev yuav tsis muaj xim encoded, thiab ib ntu uas raug kaw yuav zoo li patent, lossis rov qab.
• Cov leeg nqaij nyuj distal lossis cov leeg nqaij hauv lub duav uas raug cais tawm feem ntau tsis pom.
• Lub plawv tso zis tsawg lossis lub zog hypotension hnyav ua rau cov velocities txo qis txhua qhov chaw thiab tuaj yeem npog qhov nqaim.

Cov kev tshawb pom uas tuaj yeem ua rau muaj kev ceeb toom cuav (hu ua kab mob ntau dhau)

• Aliasing, color wrapping thaum lub velocity scale yog teem qis dhau, mimics turbulence thiab narrowing.
• Kev nias sab nraud los ntawm lub zais zis puv, lub fibroid, lub qog lossis lub probe nws tus kheej tuaj yeem ua raws li qhov stenosis.
• Cov hlab ntsha uas ntswj ua rau muaj kev kub ceev yam tsis muaj kev nqaim tiag tiag.
• Ib qho stenosis hauv cov hlab ntsha nyob ib sab (piv txwv li, ib qho carotid contralateral nruj) ua rau cov ntshav ntws ntau ntxiv rau sab tod thiab tuaj yeem ua rau ntau dhau.
• Ntshav tsis txaus, kub taub hau, cev xeeb tub, hyperthyroidism thiab arteriovenous fistulas tag nrho ua rau cov speeds pib nce.
• Cov thrombus ntev, qub, thiab teeb tsa tuaj yeem tshaj tawm tias yog DVT mob hnyav yog tias tsis muaj kev ntsuas ua ntej los sib piv.
• Kev txav mus los, kev hais lus ntawm tus neeg mob, lossis kev ua pa ua rau muaj xim cuav.

Nqa cov ntawv qhia ua ntej. Kev sib piv feem ntau yog qhov muaj txiaj ntsig zoo tshaj plaws uas tiv thaiv ob qho kev ua yuam kev.

Kev Pheej Hmoo thiab Kev Nyab Xeeb

Tus qauv kuaj mob xim Doppler

Kev kuaj mob ultrasound siv cov suab nthwv dej, tsis yog hluav taws xob ionizing, thiab tsis tas yuav txhaj tshuaj rau kev siv xim Doppler ib txwm muaj. Nws feem ntau suav tias yog qhov muaj kev pheej hmoo tsawg thaum ua rau kev kho mob los ntawm cov neeg ua haujlwm tau kawm tiav. Doppler tso cov zog suab ntau dua li cov duab greyscale, yog li cov neeg teb xov tooj siv lub hauv paus ntsiab lus ALARA, qis li tsawg tau, thiab tswj lub sijhawm raug Doppler tsawg, tshwj xeeb tshaj yog hauv kev luam theej menyuam hauv plab thiab menyuam mos. Kev tsis xis nyob me ntsis los ntawm kev nias ntawm lub probe yog qhov tshwm sim, thiab kev nias ntawm ceg mos, uas txhaws tuaj yeem mob.

Kev kuaj mob menyuam yaus thiab menyuam mos Doppler

Vim muaj suab nrov dua, pulsed thiab color Doppler thaum cev xeeb tub, tshwj xeeb tshaj yog nyob rau thawj peb lub hlis thiab hla lub hlwb lossis qhov muag ntawm tus menyuam hauv plab, tsuas yog siv rau qhov chaw kho mob, ntawm qhov chaw qis tshaj plaws thiab lub sijhawm luv tshaj plaws. Kev luam theej "keepsake" lossis kev lom zem uas tsis yog kev kho mob tsis tsim nyog. Neonatal transcranial Doppler ua raws li kev ceev faj zoo sib xws.

Contrast-enhanced ultrasound

Qhov no yog kev kuaj mob sib txawv. Cov tshuaj microbubble contrast agents raug txhaj rau hauv cov hlab ntsha thiab muaj kev pheej hmoo me me ntawm kev ua xua lossis kev ua xua ntau dhau, suav nrog cov kev ua xua loj heev, thiab xav tau kev tso cai tshwj xeeb thiab cov chaw cawm siav. Ultrasound uas muaj contrast enhanced tsis yog ib feem ntawm kev siv xim Doppler ib txwm muaj.

Kev kho mob siv ultrasound

Kev kuaj mob los ntawm Doppler, kev nqus ntshav lossis kev nkag mus rau hauv cov hlab ntsha muaj kev pheej hmoo ntawm cov txheej txheem nws tus kheej, kev los ntshav, kev kis kab mob, kev raug mob rau cov qauv nyob ze, thiab tsis muaj kev pheej hmoo sib piv rau kev kuaj mob.

Cov xwm txheej tshwj xeeb

Cev xeeb tub

Kev kuaj mob Obstetric Doppler yog ua rau thaum muaj kev qhia txog kev kho mob, feem ntau yog rau kev txwv kev loj hlob, kev mob ntshav siab lossis kev txav mus los tsawg. Cov kev tshawb pom xws li cov hlab ntsha hauv plab nce siab lossis tsis muaj cov ntshav ntws kawg ntawm diastolic yog tswj hwm los ntawm kws kho mob poj niam lossis kws kho mob menyuam hauv plab ua ke nrog kev ntsuas kev loj hlob thiab kev saib xyuas menyuam hauv plab. Raws li PC-PNDT Act, 1994, leej twg tsis tuaj yeem qhia poj niam txiv neej ntawm tus menyuam hauv plab, txawm tias muaj xwm txheej dab tsi los xij.

Cov me nyuam

Siv lub tshuab Doppler rau menyuam yaus rau kev torsion ntawm noob qes, kev sib txuas ntawm lub raum thiab kev hloov pauv, cov hlab ntsha tsis zoo thiab kev ncig ntawm lub hlwb ntawm cov menyuam mos. Siv cov probes me dua, muaj zaus ntau dua thiab kev siv tshuaj tsawg dua. Kev koom tes tseem ceeb dua li kev npaj; kev cuam tshuam lossis kev pub mis feem ntau pab tau.

Cov laus

Cov hlab ntsha uas tawv thiab calcified hloov pauv cov duab ntawm cov nthwv dej thiab ua rau cov qauv ceev tsis ntseeg tau. Cov ntsuas ntawm pob luj taws thiab caj dab tej zaum yuav siab dhau. Qee zaum xav tau kev nias ntiv taw lossis kev ntsuas angiography hla ntu.

Mob ntshav qab zib

Kev calcification ntawm cov hlab ntsha hauv nruab nrab yog ib qho uas tshwm sim ntau thiab ua rau ob qho tib si ABI thiab Doppler grading tsis tshua ntseeg tau. Neuropathy tuaj yeem zais cov claudication ib txwm muaj, yog li qhov mob tsis mob thiab tsis kho tau yuav yog thawj qhov cim ntawm kab mob ntawm cov hlab ntsha.

Kab mob raum ntev thiab kev ntxuav ntshav

Doppler siv rau kev soj ntsuam lub raum hloov pauv thiab kev saib xyuas qhov fistula. Qhov ntsuas resistive siab hauv kev hloov pauv tsis yog qhov tshwj xeeb thiab tsis yog nws tus kheej qhia tias tsis lees txais. Yuav tsum tau ua raws li kev txwv dej thaum tham txog kev npaj.

Lub plawv tsis ua haujlwm

Lub plawv dhia tsis zoo yuav ua rau lub plawv dhia qeeb thiab cuam tshuam rau kev txhais lus. Kev pw ncaj nraim ntev ntev yuav nyuaj; qhia rau lub tshuab kom hloov qhov chaw.

rog

Cov nqaij tob dua ua rau cov duab tsis zoo. Yuav tsum tau hais txog kev tshawb fawb tsawg hauv daim ntawv tshaj tawm, thiab tej zaum yuav xav tau lwm txoj kev kho. Cov neeg Esxias Qab Teb tuaj yeem muaj kab mob metabolic thiab vascular ntawm qhov hnyav ntawm lub cev qis dua li cov neeg European, yog li BMI qis dua tsis txhais tau tias muaj kev pheej hmoo ntawm cov hlab ntsha qis dua.

Xim Doppler hauv cov ntsiab lus Is Nrias teb

• Txoj Cai PC-PNDT, 1994: Txhua lub tshuab ultrasound uas muaj peev xwm thaij duab menyuam hauv plab yuav tsum tau sau npe, Daim Ntawv F yuav tsum tau ua kom tiav rau kev tshuaj ntsuam cev xeeb tub, thiab kev txiav txim siab poj niam txiv neej ua ntej yug lossis kev tshaj tawm yog kev ua txhaum cai rau tus kws kho mob thiab txhua tus neeg uas thov nws. Cov cai ntawm kev sab laj txog noob caj noob ces thiab kev khaws cov ntaub ntawv siv rau lub chaw kho mob.
• Rheumatic mob plawv tseem yog ib qho tseem ceeb ua rau muaj kab mob valve hauv Is Nrias teb. Xim Doppler thaum lub sijhawm kuaj echo yog qhov tseem ceeb rau kev ntsuas qhov mitral thiab aortic valve lesions, thiab feem ntau yog thawj qhov cim qhia rau tus tub ntxhais hluas uas ua tsis taus pa.
• Kab mob ntshav qab zib thiab mob qog ntawm ko taw yog ib qho uas pom ntau; arterial Doppler yog ib feem ntawm kev ntsuam xyuas ceg-salvage, tab sis calcification txwv nws qhov tseeb hauv pawg no.
• Kab mob ntshav tsis txaus, suav nrog kev tsis txaus hlau thiab tus cwj pwm thalassemia, dav dav thiab ua rau cov ntshav ceev zuj zus, uas tuaj yeem ua rau stenosis ntau dhau yog tias tsis suav nrog cov haemoglobin.
• Kab mob siab los ntawm tus kab mob siab viral hepatitis, cawv thiab metabolic dysfunction-associated steatotic liver disease (MASLD, yav tas los NAFLD) feem ntau raug soj ntsuam nrog portal Doppler rau kev coj ua thiab cov khoom sib txuas. Nco ntsoov tias Doppler ntsuas kev ntws, tsis yog fibrosis; elastography thiab cov qhab nia raws li ntshav hais txog fibrosis.
• Terminology: Cov neeg mob thiab cov kws kho mob uas xa mus rau lawv feem ntau hais tias "USG Doppler", "Doppler sonography" lossis "DVT scan"; kev tshawb nrhiav lub plawv feem ntau hu ua "echo test". Cov no hais txog kev kuaj mob sib txawv thiab nws tsim nyog paub meej tias qhov twg tau thov rau ntawm koj daim ntawv yuav tshuaj.
• Cov ntaub ntawv: Yog koj teem caij los ntawm daim ntawv online lossis app, lub chaw yuav tsum tswj hwm koj cov ntaub ntawv kev noj qab haus huv raws li Txoj Cai Tiv Thaiv Cov Ntaub Ntawv Tus Kheej Digital, 2023.

Tus nqi thiab kev pov hwm hauv Is Nrias teb

Cov nqi ntsuas xim Doppler hauv Is Nrias teb sib txawv ntau ntawm cov nroog, ntawm tsoomfwv thiab cov chaw ntiag tug, thiab ntawm kev tshawb fawb ib cheeb tsam thiab ntau cheeb tsam. Dua li ntawm kev hais ib tus lej, nws muaj txiaj ntsig zoo dua los paub tias dab tsi ua rau nws.

• Thaj Chaw thiab tus naj npawb ntawm thaj chaw: kev tshawb nrhiav txog cov hlab ntsha ntawm ib ceg raug nqi tsawg dua li kev tshawb nrhiav txog cov hlab ntsha thiab cov hlab ntsha ntawm ob sab ceg.
• Hom kev kawm: Kev kuaj mob cev xeeb tub Doppler nrog kev ntsuas kev loj hlob, lossis kev ntsuas echo nrog xim Doppler, muaj tus nqi txawv ntawm kev tshawb nrhiav ceg.
• Leej twg ua thiab tshaj tawm nws: kev koom tes ntawm tus kws kho mob hlwb lossis tus kws kho mob menyuam hauv plab cuam tshuam rau tus nqi.
• Hom chaw: chaw kuaj mob uas sawv cev rau ib leeg, tsev kho mob hauv tuam txhab, tsev kho mob qhia ntawv lossis chaw ua haujlwm ntawm tsoomfwv.
• Qib nroog thiab seb qhov kev luam theej puas yog sab nraum lub sijhawm ua haujlwm, nyob ib sab ntawm txaj lossis nqa tau.
• Kev ceev thiab kev tshaj tawm sai.
• Ntxiv-ons: kev siv ultrasound uas muaj cov tshuaj sib piv, cov cheeb tsam ntxiv, lossis cov txheej txheem qhia.

Kev Pov Hwm: kev kuaj mob sab nraud feem ntau tsis them los ntawm cov cai pov hwm kev noj qab haus huv tus qauv tshwj tsis yog ib feem ntawm kev nkag mus lossis tus neeg caij tsheb OPD tshwj xeeb. Thaum Doppler ua tiav thaum nkag mus hauv tsev kho mob lossis ua ib feem ntawm cov txheej txheem saib xyuas menyuam yaus uas tau pom zoo, nws feem ntau suav nrog hauv daim ntawv thov. Cov phiaj xwm tsoomfwv xws li Ayushman Bharat PM-JAY them cov pob khoom teev npe ntawm cov tsev kho mob empaneled. Paub meej tias kev them nqi nrog koj tus neeg pov hwm lossis TPA ua ntej kev luam theej duab, thiab nug lub chaw rau kev kwv yees sau ntawv. Cov nqi hais nyob qhov twg tsuas yog qhia xwb thiab hloov pauv; paub meej tias cov nqi tam sim no ncaj qha nrog lub chaw.

Cov lus dab neeg thiab qhov tseeb

Lus nug cov lus nug

Puas yog qhov kev kuaj xim Doppler mob?

Qhov kev ntsuas nws tus kheej tsis mob. Koj hnov ​​​​​​qhov gel thiab probe siab. Kev tshawb fawb txog cov hlab ntsha yuav tsum tau nias lub ceg kom ruaj khov, rov ua dua, uas tuaj yeem ua rau tsis xis nyob yog tias ceg o lossis mob. Qhia rau tus neeg ua haujlwm yog tias nws mob; feem ntau qhov siab tuaj yeem hloov kho yam tsis cuam tshuam rau kev tshawb fawb.

Kuv puas yuav tsum tau yoo mov ua ntej kuaj xim Doppler?

Feem ntau yuav tsum tau yoo mov rau lub plab, lub raum lossis lub portal Doppler kom txo cov pa roj hauv plab, thiab feem ntau tsis tas yuav tsum tau rau kev kuaj mob ntawm ceg, carotid lossis scrotal. Lub sijhawm yoo mov txawv ntawm txhua chav. Yog tias koj noj insulin lossis lwm yam tshuaj uas txo cov piam thaj, nug koj tus kws kho mob ua ntej yoo mov thiab thov kom teem sijhawm ntxov.

Xim Doppler txawv li cas ntawm ultrasound ib txwm muaj?

Daim duab ultrasound yooj yim qhia txog cov qauv hauv greyscale. Xim Doppler ntxiv cov ntaub ntawv hais txog kev txav ntawm cov ntshav, kev coj, kev ceev thiab tus qauv, uas muaj xim sib tshooj, ntxiv rau kev ntsuas cov nthwv dej. Feem ntau cov kev tshawb fawb Doppler muab ob qho tib si ua ke. Cov ntaub ntawv ntxiv pab nrog cov ntshav txhaws, kev nqaim thiab kev ntws ntshav hauv lub cev, tab sis tsis txhim kho cov qauv.

Puas siv tau xim Doppler los nrhiav tau cov hlab ntsha hauv lub plawv uas raug thaiv?

Tsis yog. Xim Doppler thaum lub sijhawm echocardiography ntsuas cov valves, shunts thiab chamber flow. Nws tsis pom cov hlab ntsha hauv lub plawv. Yog tias xav tias muaj kab mob plawv xav tau lwm txoj hauv kev, xws li ECG, treadmill test, stress imaging, CT coronary angiography lossis invasive angiography, raws li koj tus kws kho mob plawv qhia.

Puas muaj kev nyab xeeb rau kev kuaj xim Doppler thaum cev xeeb tub?

Kev siv tshuab ultrasound kuaj mob thaum cev xeeb tub yog siv dav thiab suav tias tsis muaj kev pheej hmoo thaum kuaj pom tias muaj mob. Doppler muab lub zog suab ntau dua li kev thaij duab yooj yim, yog li nws tsuas yog siv rau qee qhov chaw, tsawg kawg nkaus thiab rau lub sijhawm luv tshaj plaws, tshwj xeeb tshaj yog thaum cev xeeb tub thaum ntxov. Kev thaij duab uas tsis yog khoom siv kho mob tsis tsim nyog.

Vim li cas kuv daim ntawv qhia thiaj hais tias txoj kev tshawb fawb no "txwv tsis pub siv"?

Qhov no txhais tau tias qhov zoo ntawm daim duab raug txo qis, feem ntau yog los ntawm cov pa roj hauv plab, lub cev raug mob, oedema, cov ntaub qhwv, calcification lossis kev txav mus los ntawm tus neeg mob. Nws yog ib qho lus hais txog kev ncaj ncees, tsis yog qhov yuam kev. Nws txhais tau tias cov kev tshawb pom tsis paub meej, thiab koj tus kws kho mob yuav rov ua qhov kev luam theej duab tom qab lossis xaiv lwm qhov kev xeem.

Kuv puas tsav tsheb thiab ua haujlwm tau tom qab kev luam theej duab?

Yog, tom qab kuaj mob xim Doppler tas li koj tuaj yeem tsav tsheb thiab rov qab mus ua ub ua no li qub tam sim ntawd. Qhov xwm txheej txawv yog tias koj kuj tau kuaj mob ultrasound uas muaj cov xim sib txawv, tshuaj loog, tshuaj echo transoesophageal lossis kev kho mob uas tau qhia, hauv cov xwm txheej ntawd ua raws li cov lus qhia tshwj xeeb uas tau muab.

Yuav tsum tau ua dua ib qho xim Doppler ntau npaum li cas?

Tsis muaj lub sijhawm teem tseg. Qhov zaus rov ua dua yog nyob ntawm seb muaj mob dab tsi, piv txwv li, kev saib xyuas tom qab DVT, kev saib xyuas lub qhov dej ntxuav ntshav, lossis kev txwv kev loj hlob ntawm lub cev xeeb tub, uas tej zaum yuav yog txhua ob peb hnub. Koj tus kws kho mob teem lub sijhawm raws li koj qhov xwm txheej.

Kuv lub Doppler zoo li qub tab sis cov tsos mob tseem muaj. Yuav ua li cas tam sim no?

Rov qab mus rau tus kws kho mob uas tau thov kom kuaj. Lub Doppler ib txwm qhia txog yam uas pom hauv cov ntu tshwj xeeb rau hnub ntawd; nws tsis suav nrog cov kab mob lwm qhov lossis cov kab mob uas tshwm sim tom qab. Koj tus kws kho mob yuav rov ua qhov kev luam theej duab dua, kuaj xyuas thaj chaw sib txawv, lossis hloov mus rau CT lossis MR angiography.

Qhov chaw

• Txoj Cai Kev Tshuaj Xyuas Ua Ntej Kev Xeeb Tub thiab Ua Ntej Yug Me Nyuam (Kev Txwv Tsis Pub Xaiv Poj Niam Txiv Neej) Xyoo 1994, Tsoomfwv Is Nrias teb, nrog rau cov cai thiab kev hloov kho tom qab.
• British Medical Ultrasound Society, cov lus qhia kev nyab xeeb rau kev siv cov khoom siv ultrasound kuaj mob kom muaj kev nyab xeeb.
• Lub Koom Haum Thoob Ntiaj Teb rau Ultrasound hauv Tshuaj thiab Biology, cov lus hais txog kev siv Doppler ultrasound kom muaj kev nyab xeeb, suav nrog kev siv rau hauv plab.
• Lub Koom Haum Thoob Ntiaj Teb ntawm Ul