Dab tsi ua rau radiographic ceev?
Dab tsi ua rau radiographic ceev?

Video: Dab tsi ua rau radiographic ceev?

Video: Dab tsi ua rau radiographic ceev?
Video: Ceev Faj dab ntxwg nyoog tes haujlwm 2024, Kaum ib hlis
Anonim

Thaum lub sijhawm mA lossis lub sijhawm raug nce , tus naj npawb x-ray photons tsim los ntawm anode nce linearly tsis muaj nce beam zog. Qhov no yuav ua rau ntau dua ntawm photons mus txog qhov receptor thiab qhov no ua rau tag nrho nce hauv ceev ntawm hluav taws xob duab (Daim duab 2).

Yog li ntawd, dab tsi cuam tshuam rau radiographic ceev?

Ob peb yam muaj cuam tshuam diagnostic peev xwm ntawm cov hluav taws xob duab xws li kVp, lub sij hawm raug, mA, pom, collimation, daim phiaj, thiab hom ntawm txoj hauj lwm qhia ntaus ntawv.

Ib yam li ntawd, radiographic ceev yog dab tsi? Radiographic ceev (AKA optical, duab, lossis zaj duab xis ceev ) yog ib qho kev ntsuas ntawm qhov degree ntawm zaj duab xis darkening. Los ntawm lub rooj no, nws pom tau tias a ceev kev nyeem ntawv ntawm 2.0 yog qhov tshwm sim ntawm tsuas yog ib feem pua ntawm qhov teeb meem teeb pom kev los ntawm zaj duab xis.

Tsis tas li ntawd, dab tsi tswj radiographic ceev?

Txawm hais tias cov khoom ntawm lub raj tam sim no thiab lub sij hawm raug, ntsuas hauv milliampere-seconds (mA·s), yog qhov tseem ceeb ntawm kev tswj hwm ntawm radiographic ceev , kVp kuj cuam tshuam rau radiographic ceev tsis ncaj.

Dab tsi yog 5 radiographic densities?

Cov tsib yooj yim radiographic ceev : huab cua, rog, dej (cov ntaub so ntswg mos), pob txha, thiab hlau. Huab cua yog cov xov tooj cua tshaj plaws (blackest) thiab hlau yog feem ntau radiopaque (dawb tshaj).

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