Kev siv niobium hauv kev kho hniav radiography

Nyob rau xyoo 1990, cov tshuab hluav taws xob hluav taws xob digital tsis tau nrov nrov rau kev kuaj hniav, kev kho mob ntawm X-ray imaging system tseem nyob rau hauv daim ntawv thov ntawm kev txhim kho zaj duab xis, yuav ua li cas kom ntseeg tau cov duab zoo nyob rau hauv qhov chaw ntawm kev txo tus neeg mob cov tshuaj hluav taws xob tau ua cov kev taw qhia. ntawm cov kws tshawb fawb. Ntau tus kws tshawb fawb tau sim siv cov niobium-raws li cov ntxaij lim dej kom txo tau cov tshuaj tiv thaiv hluav taws xob rau cov neeg mob, thiab Nqe li al. pom tias niobium-raws li cov ntxaij lim dej ua rau kom cov yeeb yaj kiab rhiab heev, txo cov X-ray beam, thiab cov yeeb yaj kiab sib piv tsis cuam tshuam los ntawm qhov zoo ntawm cov nqaj tam sim no, thiab Dawb li al. pom tau hais tias niobium-raws li cov ntxaij lim dej tuaj yeem txo cov tshuaj tiv thaiv hluav taws xob los ntawm 20% mus rau 30%, thiab kuj tau ua pov thawj tias cov duab zoo ntawm D-ceev yees duab tau cuam tshuam me ntsis, thiab cov duab zoo ntawm E-ceev yees duab yeeb yaj kiab cuam tshuam me ntsis. McDonnell et al. pom tias niobium-raws li cov ntxaij lim dej txo cov hluav taws xob hauv cheeb tsam ntiav (2 cm), tab sis nce hluav taws xob hauv cheeb tsam ntxaum (6 cm).

Byrne et al. txoj kev tshawb fawb ntawm daim tawv nqaij raug hluav taws xob thiab cov thyroid radiation dose faib tom qab siv cov niobium-raws li cov ntxaij lim dej tau pom tias niobium-raws li cov ntxaij lim dej ua rau txo cov tawv nqaij tawg tawg, tab sis ua tsis tiav los txo qhov cuam tshuam rau cov thyroid caj pas tob, thiab txawm tias nce ntxiv. raug rau ib feem ntawm cov thyroid caj pas. Scarfe et al. kuj tau pom tias cov niobium-raws li cov ntxaij lim dej ua rau kom muaj hluav taws xob ntau hauv cov ntaub so ntswg sib sib zog nqus, xws li cov thyroid caj pas. Yog li ntawd, muaj cov kev xav sib txawv ntawm qhov laj thawj thiab qhov tsim nyog ntawm kev siv cov lim dej niobium.

Tetradis et al. sib cav hais tias daim ntawv thov ntawm niobium-raws li cov ntxaij lim dej tsis yog tsuas yog ua rau cov kab hluav taws xob nruj, tab sis kuj nce lub sij hawm hluav taws xob, ua rau dynamic blurring, thiab txo qhov sib piv ntawm cov duab, thiab Bianchi li al. txheeb xyuas cov txiaj ntsig ntawm kev sim siv lub square-wave teb muaj nuj nqi thiab sib cav tias, txawm hais tias cov niobium-raws li cov ntxaij lim dej tuaj yeem txo qhov koob tshuaj ntawm cov hluav taws xob mus rau ib qho degree piv nrog cov tsoos txhuas-raws li cov ntxaij lim dej, qhov kev pheej hmoo ntawm kev nce cov tshuaj tiv thaiv hluav taws xob mus rau qhov chaw. cov ntaub so ntswg sib sib zog nqus, tus nqi, hnav thiab tsim kua muag, thiab qhov nce ntawm cov hluav taws xob ntau ntxiv rau cov ntaub so ntswg tob, txhua tus tau suav tias yog yam tseem ceeb. Qhov kev pheej hmoo ntawm cov hluav taws xob ntau ntxiv rau cov ntaub so ntswg ntxaum, nrog rau kev nce nqi thiab hnav thiab tsim kua muag, ua rau kev siv cov niobium-raws li cov lim dej ntau dua li qhov tsim nyog.

Hais txog cov txiaj ntsig ntawm niobium-raws li cov ntxaij lim dej ntawm cov duab zoo, qee cov kws tshawb fawb kuj tau tshawb fawb. xov et al. siv cov kev hloov pauv hloov pauv los txheeb xyuas qhov sib piv ntawm cov duab ua ntej thiab tom qab daim ntawv thov ntawm niobium-raws li cov ntxaij lim dej thiab pom tias tsuas muaj qee qhov kev txo qis hauv cov duab sib piv; niobium-raws li cov ntxaij lim dej tsis zoo txo ​​qhov zoo ntawm cov duab thaum piv nrog cov ntxaij lim dej aluminium. borden et al. pom tias seb puas los yog tsis siv cov niobium-raws li cov ntxaij lim dej muaj qhov cuam tshuam loj rau kev kuaj mob ntawm orthodontic stainless hlau. Borden et al. pom tias daim ntawv thov ntawm niobium-raws li cov ntxaij lim dej tsis muaj qhov cuam tshuam loj rau kev kuaj mob ntawm qhov sib txawv ntawm qhov sib txawv ntawm txhuas cov qauv hauv qab archwire. Nrog rau kev txhim kho ntawm cov tshuab hluav taws xob digital, cov ntsiab lus siab, tsis tshua muaj hluav taws xob hauv qhov ncauj X-ray imaging thev naus laus zis tau maj mam ua tau, niobium-raws li cov ntxaij lim dej hauv thaj chaw ntawm qhov ncauj radiology daim ntawv thov kev tshawb fawb tau maj mam ploj mus ntawm tib neeg lub zeem muag.