Cov txheej txheem:

Movement artifact yog dab tsi?
Movement artifact yog dab tsi?

Video: Movement artifact yog dab tsi?

Video: Movement artifact yog dab tsi?
Video: Paj Huab Vaj - Qhov Ntawm No Yog Dab Tsi (Official Music Video) NEW SONG 2024, Kaum ib hlis
Anonim

Motion artifact yog tus neeg mob raws li tus neeg mob khoom cuav uas tshwm sim nrog tus neeg mob yeem lossis tus neeg mob tsis txaus siab kev txav mus los thaum nrhiav tau duab. Kev sau npe tsis raug cov khoom qub , uas tshwm sim raws li qhov muag plooj, streaking, lossis shading, yog tshwm sim los ntawm tus neeg mob kev txav mus los Thaum kuaj CT.

Raws li, nws txhais li cas thaum MRI qhia tau tias muaj khoom cuav?

Ib MRI khoom 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 feature uas tshwm nyob rau hauv ib daim duab uas tsis muaj nyob rau hauv cov khoom qub. Cov khoom qub tuaj yeem raug cais raws li tus neeg mob ntsig txog, teeb liab ua haujlwm-nyob thiab kho vajtse (tshuab)-txog.

Qhov thib ob, qhov cuam tshuam ntawm cov khoom siv dag zog yog dab tsi? 6.4. Motion artifacts muaj feem xyuam rau lub plawv tsab ntawv tsa suab uas yog tshwm sim los ntawm lub plawv pulmonary los yog lub cev tsab ntawv tsa suab thiab tuaj yeem ua rau qhov muag tsis pom lossis ob daim duab.

Ua raws li qhov xav tau, qhov txawv ntawm artifact thiab artefact yog dab tsi?

Artifact : Ib yam khoom uas tsim los yog tsim los ntawm tib neeg cov khoom siv tes ua, tshwj xeeb tshaj yog cov cuab yeej, riam phom, lossis cov khoom zoo nkauj ntawm archaeological lossis keeb kwm nyiam. Artefact : Ib qho khoom tsim los yog cov nyhuv pom hauv a natural system, tshwj xeeb tshaj yog ib qho qhia los ntawm cov cuab yeej siv hauv kev tshawb fawb tshawb fawb lossis los ntawm kev sim ua yuam kev.

Yuav ua li cas koj thiaj li txo cov duab kos?

Txo cov ntawv tsa suab

  1. Txo qhov degree ntawm kev txav mus los. a. Qhov tseem ceeb ntawm cov lus qhia yooj yooj yim / kev kawm ntawm tus neeg mob kom tuav tau thaum lub tshuab luam ntawv ua suab nrov yuav tsum tsis txhob kwv yees.
  2. Tshem tawm cov teeb liab los ntawm kev txav cov ntaub so ntswg. a.
  3. Kho cov duab ib ntus thiab tsis muaj. a.
  4. Tshawb nrhiav thiab them nyiaj rau kev txav.

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