Video: KVp sawv cev rau dab tsi hauv hluav taws xob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dr Francis Deng thiab Dr Ayush Goel et al. Kilovoltage ncov ( kVp ua ) yog lub ncov muaj peev xwm siv rau lub x-ray raj, uas accelerates electrons ntawm lub cathode mus rau lub anode nyob rau hauv radiography los yog xam tomography. Tube voltage, nyob rau hauv lem, txiav txim qhov ntau thiab zoo ntawm cov photons generated.
Ntxiv mus, kVp hauv hluav taws xob yog dab tsi?
Ncej kilovoltage ( kVp ua ) hais txog qhov siab tshaj qhov hluav taws xob siv thoob plaws ib qho X-ray raj thaum tsim cov x-rays hauv nws. kVp ua tswj cov cuab yeej hu ua "radiographic contrast" ntawm ib qho x-ray duab (qhov piv ntawm cov hluav taws xob kis tau los ntawm cov cheeb tsam ntawm qhov sib txawv thickness los yog ntom).
Tsis tas li ntawd, kVp cuam tshuam li cas rau cov duab zoo? nyhuv ntawm mAs thiab kVp ua ntawm daws teeb meem thiab ntawm duab sib piv. Tus thawj xyaum ua tej yam pom tias, thaum cov zaj duab xis ceev cia tsis tu ncua, ntau dua qhov lub kVp ua , qhov qis dua daws teeb meem thiab duab qhov sib piv feem pua; kuj, qhov siab dua qhov mAs, qhov siab dua daws teeb meem thiab duab qhov sib piv feem pua.
Ib yam li ntawd, koj tuaj yeem nug, Ma nyob rau hauv hluav taws xob yog dab tsi?
Milliamperage ( mav ) yog ib qho tseem ceeb hauv kev txiav txim siab kom muaj nuj nqis ntawm x-rays tsim thiab yog, yog li ntawd, ib qho kev qhia zoo ntawm hom kev ntsuam xyuas uas tuaj yeem ua nrog lub tshuab. Qhov m A-s Factor (lub sij hawm × milliamperes) cuam tshuam rau zaj duab xis ntom ntom los ntawm kev tswj hwm tus nqi ntawm X-ray photons uas ncav cuag cov yeeb yaj kiab emulsion.
kVp ua dab tsi los sib piv?
Radiation quality los yog kVp ua : nws muaj txiaj ntsig zoo rau kev kawm sib piv . Ib qho qis kVp ua yuav ua rau x-ray beam tsawg nkag. Qhov no yuav ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kev kawm, ua rau siab dua sib piv . Ib siab dua kVp ua yuav ua rau lub x-ray beam nkag mus.
Pom zoo:
Dab tsi yog qhov txawv ntawm kev txuag hluav taws xob thiab lub hauv paus ntsiab lus ntawm kev txuag hluav taws xob?
Lub caloric txoj kev xav tau khaws cia tias cov cua sov tsis tuaj yeem tsim los yog rhuav tshem, qhov kev txuag ntawm lub zog ua rau lub hauv paus ntsiab lus tsis sib xws uas cov cua sov thiab cov tshuab ua haujlwm sib hloov tau
Dab tsi yog cov yam ntxwv ua siab hloov hluav taws xob hloov hluav taws xob LET muaj thaum piv nrog LET hluav taws xob tsawg?
Dab tsi yog cov yam ntxwv ua kom muaj hluav taws xob hloov hluav taws xob siab (LET) hluav taws xob muaj thaum piv nrog cov hluav taws xob qis-LET? Cov huab hwm coj ntau ntxiv, txo qhov nkag mus. (Vim lawv cov nqi hluav taws xob thiab cov khoom loj heev, lawv ua rau ntau ionizations hauv cov ntaub so ntswg, sai sai poob lub zog
Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms?
Tus nqi zoo attracts tus nqi tsis zoo thiab ua rau lwm tus nqi zoo. Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms? Cov nqi hluav taws xob yog cov cuab yeej ntawm tag nrho cov atoms
Dab tsi yog tib yam hauv txhua qhov hluav taws xob hluav taws xob?
Electromagnetic hluav taws xob yog ib hom hluav taws xob uas feem ntau hu ua lub teeb. Feem ntau hais lus, peb hais tias lub teeb mus rau hauv nthwv dej, thiab tag nrho cov hluav taws xob hluav taws xob hluav taws xob mus rau tib qhov ceev uas yog li 3.0 * 108 meters ib ob los ntawm lub tshuab nqus tsev
Dab tsi yog kauj ruam transformers siv hauv kev xa hluav taws xob hluav taws xob?
Cov hluav taws xob hluav taws xob tau xa mus rau qhov ntev ntawm qhov hluav taws xob siab. Yog li, cov kauj ruam nce transformers yog siv ntawm cov chaw nres tsheb fais fab kom nce qhov hluav taws xob ntawm lub zog whereas cov kauj ruam-down transformers yog siv los txo qhov voltage mus txog 220 V