Kev thaij duab X-ray yog lub hauv paus tseem ceeb ntawm kev kuaj mob niaj hnub no, muab cov ntaub ntawv tseem ceeb txog tus neeg mob tus mob. Txawm li cas los xij, qhov ua tau zoo ntawm cov txheej txheem thaij duab no raug cuam tshuam los ntawm cov khoom siv, tshwj xeeb tshaj yog cov tshuab X-ray collimators. Cov khoom siv no ua lub luag haujlwm tseem ceeb hauv kev tsim cov duab X-ray, uas cuam tshuam ncaj qha rau kev nyab xeeb ntawm tus neeg mob thiab cov tshuaj tua kab mob uas tau txais thaum lub sijhawm thaij duab.
Cov khoom siv X-ray collimatorstau tsim los txwv qhov loj thiab cov duab ntawm lub teeb X-ray, kom ntseeg tau tias tsuas yog thaj chaw uas xav tau raug irradiated. Txoj hauv kev tsom mus rau qhov no tsis yog tsuas yog txhim kho qhov zoo ntawm daim duab los ntawm kev txo cov hluav taws xob tawg, tab sis kuj txo qis qhov kev raug rau cov ntaub so ntswg ib puag ncig. Los ntawm kev txwv lub teeb X-ray rau thaj chaw tshwj xeeb uas raug kuaj xyuas, cov collimators tuaj yeem txo qhov koob tshuaj hluav taws xob tag nrho uas tus neeg mob tau txais thaum lub sijhawm kuaj mob.
Ib qho ntawm cov kev txhawj xeeb tseem ceeb nrog kev thaij duab kho mob yog qhov kev pheej hmoo uas cuam tshuam nrog kev raug hluav taws xob. Txawm hais tias cov txiaj ntsig ntawm kev thaij duab X-ray feem ntau ntau dua li qhov kev pheej hmoo, nws yog ib qho tseem ceeb uas yuav tsum siv cov tswv yim los txhim kho kev nyab xeeb ntawm tus neeg mob. Cov khoom siv X-ray collimators yog ib qho tseem ceeb ntawm cov tswv yim no. Los ntawm kev ua kom qhov loj ntawm lub teeb zoo dua, cov khoom siv collimators pab ua kom ntseeg tau tias cov neeg mob tsis raug hluav taws xob ntau dhau, yog li txo qhov muaj peev xwm rau cov teeb meem uas tshwm sim los ntawm kev siv hluav taws xob, xws li kev puas tsuaj rau daim tawv nqaij lossis kev pheej hmoo ntawm mob qog noj ntshav.
Tsis tas li ntawd xwb, kev siv cov collimators pab ua raws li txoj cai "As Low As Possible Radiation Dose" (ALARA), uas yog ib txoj cai tseem ceeb hauv kev kho mob hluav taws xob. Txoj cai no hais txog qhov tseem ceeb ntawm kev txo qis kev raug hluav taws xob thaum tau txais cov ntaub ntawv kuaj mob tsim nyog. Los ntawm kev tswj hwm lub teeb X-ray zoo, cov collimators pab cov kws kho mob hluav taws xob ua raws li txoj cai ALARA, kom ntseeg tau tias tus neeg mob tau txais cov tshuaj hluav taws xob qis tshaj plaws yam tsis muaj kev cuam tshuam rau qhov zoo ntawm cov duab tsim tawm.
Ntxiv rau kev txhim kho kev nyab xeeb ntawm tus neeg mob, cov tshuab X-ray collimators kuj tseem ua lub luag haujlwm hauv kev txhim kho kev ua haujlwm zoo ntawm cov txheej txheem thaij duab. Los ntawm kev txo cov hluav taws xob tawg, cov tshuab collimators tuaj yeem tsim cov duab meej dua, yog li txo qhov xav tau kev kuaj mob dua. Qhov no tsis yog tsuas yog txuag lub sijhawm rau cov neeg mob thiab cov kws kho mob xwb, tab sis kuj tseem txo cov koob tshuaj hluav taws xob uas cov neeg mob yuav tau txais dhau sijhawm.
Kev nce qib ntawm thev naus laus zis hauv cov tshuab X-ray collimators kuj pab txhim kho kev nyab xeeb ntawm tus neeg mob. Cov tshuab collimators niaj hnub no muaj cov yam ntxwv xws li kev txwv lub teeb tsis siv neeg thiab kev teeb tsa kho tau kom tswj tau lub teeb X-ray kom raug. Cov kev tsim kho tshiab no tso cai rau cov kws kho mob kho cov txheej txheem thaij duab kom haum rau txhua tus neeg mob cov kev xav tau, kom ntseeg tau tias muaj kev nyab xeeb zoo tshaj plaws thiab kev raug hluav taws xob tsawg kawg nkaus.
Hauv kev xaus,Cov khoom siv X-ray collimatorsyog ib qho tseem ceeb ntawm kev thaij duab kho mob thiab muaj feem cuam tshuam loj heev rau kev nyab xeeb ntawm tus neeg mob thiab koob tshuaj tua kab mob. Los ntawm kev txwv lub teeb X-ray rau thaj chaw uas xav tau, cov collimators tsis yog tsuas yog txhim kho qhov zoo ntawm daim duab xwb tab sis kuj txo qis kev raug hluav taws xob tsis tsim nyog rau cov ntaub so ntswg ib puag ncig. Lawv lub luag haujlwm hauv kev ua raws li lub hauv paus ntsiab lus ALARA ntxiv qhia txog lawv qhov tseem ceeb hauv kev thaij duab niaj hnub no. Thaum thev naus laus zis txuas ntxiv mus, kev txhim kho thiab kev siv cov X-ray collimators tseem ceeb heev rau kev ua kom muaj kev nyab xeeb thiab kev noj qab haus huv ntawm cov neeg mob uas tab tom ua cov txheej txheem kuaj mob.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-18-2024