Dab tsi yog elongation hauv radiography?

Video: Dab tsi yog elongation hauv radiography?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Elongation yog thaum twg hluav taws xob daim duab zoo nkaus li ntev dua li cov khoom siv hluav taws xob. Yog hais tias ib feem yog parallel rau IR, tab sis tus x-ray lub cev yog angled, elongation tuaj yeem tshwm sim raws li nyob rau hauv daim duab sab laug hauv qab no (45 degree lub kaum sab xis rau ntawm qhov).

Raws li txoj cai, dab tsi ua rau elongation hauv radiography?

Foreshortening thiab elongation ntawm cov hniav hauv ib X-ray yog qhov tshwm sim ntawm qhov tsis raug tso lub taub hau ntawm lub tshuab ntawm lub kaum sab xis tsis raug, lossis tso tus neeg mob lub taub hau kom lub koov raug hluav taws xob tsis sib xws rau hauv pem teb. Qhov no ua rau tus "duab ntxoov ntxoo" ntawm tus hniav kom miscast rau hauv zaj duab xis.

Tsis tas li ntawd, dab tsi yog distortion hauv radiography? - Distortion tej zaum yuav raug txhais, los ntawm a hluav taws xob standpoint, raws li ib tug variation nyob rau hauv qhov loj los yog cov duab ntawm ib yam khoom raws li qhia nyob rau hauv zaj duab xis los ntawm nws qhov tseeb loj los yog zoo. Magnified distortion yog cuam tshuam los ntawm qhov kev ncua deb ntawm cov khoom yuav tsum tau radiographed los ntawm zaj duab xis, thiab qhov deb ntawm qhov chaw focal ntawm lub raj los ntawm zaj duab xis.

Tsis tas li ntawd, dab tsi ua rau elongation thiab foreshortening?

Vertical alignment yuam kev feem ntau tshwm sim nrog cov txheej txheem bisecting lub kaum sab xis thiab tuaj yeem ua rau elongation los yog ua ntej ntawm cov hniav. Lwm yam yuam kev uas yuav tshwm sim ua rau hniav kom tshwm elongated los yog ua ntej muaj xws li: receptor txoj hauj lwm. tus neeg mob txoj hauj lwm.

Dab tsi ua rau me me distortion hauv radiography?

Hauv angiography kom pom cov hlab ntsha me me. Cov duab Distortion ? Feem ntau raug xa mus rau qhov tseeb distortion , ua rau los ntawm elongation los yog foreshortening nyob rau hauv hluav taws xob duab. ? Cov duab distortion cuam tshuam los ntawm:? (a) Part- movie kev sib raug zoo.

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