Video: Dab tsi yog qhov sib txawv thiab qhov ceev hauv radiography?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Radiographic Contrast . Zoo sib xws yog qhov txawv hauv ceev los yog sib txawv nyob rau hauv lub degree ntawm greyness ntawm cov cheeb tsam ntawm lub hluav taws xob duab. Nws yog qhov tseem ceeb tshaj plaws ua rau kev kawm sib piv . Ib siab dua ceev cov khoom yuav attenuate ntau x-rays dua ib qho qis ceev khoom.
Ib yam li ntawd, nws tau nug, qhov sib txawv ntawm qhov ntom ntom thiab qhov sib txawv ntawm qhov radiography yog dab tsi?
Qhov loj dua txawv hauv thickness los yog ceev ntawm ob qhov chaw ntawm qhov kev kawm, qhov loj dua txawv hauv radiographic ceev los yog sib piv . Feem ntau, as sib piv rhiab heev nce, lub latitude ntawm lub xov tooj cua txo.
Qhov thib ob, qhov sib txawv txhais li cas hauv radiography? Radiographic sib piv yog qhov qhov sib txawv ntawm qhov sib txawv ntawm cov cheeb tsam nyob sib ze ntawm ib qho tiaj xov tooj cua . Siab radiographic sib piv yog pom nyob rau hauv xov tooj cua qhov twg qhov sib txawv ceev yog notably txawv (dub mus rau dawb).
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog qhov ceev hauv radiography?
- Radiographic ceev . Radiographic ceev (AKA optical, duab, lossis zaj duab xis ceev ) yog ib qho kev ntsuas ntawm qhov degree ntawm zaj duab xis darkening. Technically nws yuav tsum hu ua "hloov ceev "thaum txuam nrog pob tshab-puab zaj duab xis vim nws yog ib qho kev ntsuas ntawm lub teeb kis los ntawm zaj duab xis.
Dab tsi ua rau radiographic ceev?
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).
Pom zoo:
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm qhov nrawm thiab nrawm?
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