X-ray duab yog lub hauv paus ntawm kev kho mob niaj hnub, 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 kev yees duab no cuam tshuam zoo heev los ntawm cov cuab yeej siv, tshwj xeeb tshaj yog X-ray collimators. Cov cuab yeej no ua lub luag haujlwm tseem ceeb hauv kev tsim cov kab hluav taws xob X-ray, uas cuam tshuam ncaj qha rau cov neeg mob kev nyab xeeb thiab cov koob tshuaj hluav taws xob tau txais thaum lub sijhawm ntsuas.
X-ray collimatorsyog tsim los txwv qhov loj thiab cov duab ntawm X-ray beam, kom ntseeg tau tias tsuas yog thaj tsam ntawm kev txaus siab yog irradiated. Txoj kev tsom mus rau qhov no tsis tsuas yog txhim kho cov duab zoo los ntawm kev txo cov hluav taws xob tawg, tab sis kuj txo qis qhov tsis tsim nyog raug rau cov ntaub so ntswg ib puag ncig. Los ntawm kev txwv cov kab hluav taws xob xoo hluav taws xob mus rau thaj chaw tshwj xeeb uas tau kuaj xyuas, cov neeg sib koom ua ke tuaj yeem txo qis tag nrho cov kab hluav taws xob tau txais los ntawm tus neeg mob thaum lub sijhawm kuaj mob.
Ib qho kev txhawj xeeb tseem ceeb nrog kev kuaj mob yog qhov muaj feem cuam tshuam nrog kev raug hluav taws xob. Thaum cov txiaj ntsig ntawm X-ray duab feem ntau tshaj qhov txaus ntshai, nws yog ib qho tseem ceeb rau kev siv cov tswv yim los txhim kho cov neeg mob kev nyab xeeb. X-ray collimators yog ib qho tseem ceeb ntawm cov tswv yim no. Los ntawm kev ua kom zoo ntawm cov nqaj loj, collimators pab xyuas kom cov neeg mob tsis txhob raug hluav taws xob ntau dhau, yog li txo qhov muaj feem cuam tshuam rau cov teeb meem hluav taws xob, xws li tawv nqaij puas lossis muaj kev pheej hmoo ntawm kev mob qog noj ntshav.
Tsis tas li ntawd, kev siv cov collimators pab ua raws li "Raws li Tsawg Raws Li Txoj Cai Radiation Dose" (ALARA), uas yog txoj cai tseem ceeb hauv hluav taws xob. Lub hauv paus ntsiab lus no hais txog qhov tseem ceeb ntawm kev txo cov hluav taws xob tsawg thaum tau txais cov ntaub ntawv kuaj mob tsim nyog. Los ntawm kev tswj hwm lub X-ray beam zoo, collimators ua kom cov kws tshawb fawb hluav taws xob ua raws li ALARA txoj cai, ua kom tus neeg mob tau txais cov kab hluav taws xob qis tshaj plaws yam tsis muaj kev cuam tshuam cov duab tsim tawm.
Ntxiv nrog rau kev txhim kho kev nyab xeeb ntawm tus neeg mob, X-ray collimators tseem ua lub luag haujlwm hauv kev txhim kho tag nrho cov kev ua haujlwm ntawm cov txheej txheem duab. Los ntawm kev txo cov hluav taws xob tawg, cov collimators tuaj yeem tsim cov duab meej dua, yog li txo qhov kev xav tau rov kuaj dua. Qhov no tsis tsuas yog txuag lub sijhawm rau cov neeg mob thiab cov kws kho mob, tab sis kuj tseem txo cov koob tshuaj hluav taws xob ntau ntxiv uas cov neeg mob yuav tau txais lub sijhawm.
Kev siv thev naus laus zis hauv X-ray collimators kuj pab txhim kho cov neeg mob kev nyab xeeb. Niaj hnub nimno collimators yog nruab nrog nta xws li tsis siv neeg beam limiting thiab adjustable chaw kom precisely tswj lub X-ray beam. Cov kev tsim kho tshiab no tso cai rau cov kws kho mob tuaj yeem kho cov txheej txheem kev kos duab rau cov kev xav tau tshwj xeeb ntawm txhua tus neeg mob, ua kom muaj kev nyab xeeb zoo thiab raug hluav taws xob tsawg.
Hauv cov ntsiab lus,X-ray collimatorsyog ib qho tseem ceeb ntawm kev kuaj pom kev kho mob thiab muaj kev cuam tshuam loj rau cov neeg mob kev nyab xeeb thiab kev siv hluav taws xob. Los ntawm kev kaw lub X-ray beam kom zoo rau thaj tsam ntawm kev txaus siab, collimators tsis tsuas yog txhim kho cov duab zoo xwb tab sis kuj txo qis cov hluav taws xob tsis tsim nyog rau cov ntaub so ntswg. Lawv lub luag haujlwm hauv kev ua raws li ALARA txoj cai tseem ceeb ntxiv rau lawv qhov tseem ceeb hauv hluav taws xob niaj hnub. Raws li kev siv thev naus laus zis txuas ntxiv mus, kev txhim kho txuas ntxiv thiab kev siv ntawm X-ray collimators tseem yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab kev noj qab haus huv ntawm cov neeg mob uas raug kuaj xyuas cov txheej txheem.
Post lub sij hawm: Nov-18-2024