Dab tsi yog artifact ntawm CT scan?
Dab tsi yog artifact ntawm CT scan?

Video: Dab tsi yog artifact ntawm CT scan?

Video: Dab tsi yog artifact ntawm CT scan?
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Anonim

Cov khoom qub feem ntau ntsib hauv kev kho mob xam tomography ( CT ), thiab tej zaum yuav tsis pom los yog simulate pathology. Muaj ntau yam sib txawv ntawm CT artifacts , nrog rau cov suab nrov, beam hardening, tawg, pseudoenhancement, motion, cone beam, helical, nplhaib, thiab hlau cov khoom qub.

Tsis tas li ntawd, dab tsi ua rau lub nplhaib artifact ntawm CT?

Ntiv nplhaib artifacts yog a CT phenomenon uas tshwm sim vim miscalibration los yog tsis ua hauj lwm ntawm ib los yog ntau tshaj detector ntsiab nyob rau hauv a CT tshuab luam ntawv. Tsawg zaus nws kuj tuaj yeem ua tau ua rau los ntawm kev siv hluav taws xob tsis txaus, lossis qhov sib txawv ntawm cov khoom sib kis ntawm lub ntsuas ntsuas npog 2. Lawv yog ib qho teeb meem tshwm sim hauv cranial CT.

Dhau li saum toj no, dab tsi yog artifacts nyob rau hauv imaging? Ib duab kos duab yog ib qho feature uas tshwm hauv ib qho duab uas tsis muaj nyob rau hauv cov khoom qub duab. Ib duab kos duab yog qee zaum qhov tshwm sim ntawm kev ua haujlwm tsis raug ntawm cov duab kos duab, thiab lwm lub sijhawm yog qhov tshwm sim ntawm cov txheej txheem ntuj lossis cov khoom ntawm tib neeg lub cev.

Ntxiv mus, dab tsi yog ib qho khoom cuav hauv lub hlwb?

MRI khoom cuav . Los ntawm Wikipedia, dawb encyclopedia. Ib MRI khoom cuav yog ib qho kev pom khoom cuav (ib qho anomaly pom thaum pom kev sawv cev) hauv magnetic resonance imaging (MRI). Nws yog ib qho kev tshwm sim hauv cov duab uas tsis muaj nyob rau hauv cov khoom qub.

Yuav ua li cas koj nres ib tug hlau artifact ntawm CT?

Abstract. Nws paub tias hlau artifacts tuaj yeem raug txo los ntawm kev hloov kho tus qauv tau txais thiab kev tsim kho dua tshiab, los ntawm kev hloov kho cov ntaub ntawv projection thiab / lossis cov ntaub ntawv duab thiab los ntawm kev siv virtual monochromatic imaging muab rho tawm los ntawm dual-zog CT.

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