Video: Dab tsi yog qhov sib txawv hauv xray?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Zoo sib xws yog qhov sib txawv ntawm qhov ntom ntom lossis qhov sib txawv ntawm qhov degree ntawm greyness ntawm thaj chaw ntawm cov duab radiographic. Nws yog qhov tseem ceeb tshaj plaws ua rau kev kawm sib piv . Cov khoom siv ntom ntom ntau dua yuav ua rau ntau dua x-rays dua li cov khoom siv qis dua.
Hais txog qhov no, dab tsi cuam tshuam qhov sib txawv hauv radiography?
Nws yuav tsum tsis txhob xav tsis thoob tias qhov sib txawv ntawm qhov nqus ntawm cov ntsiab lus yuav cuam tshuam qib ntawm sib piv hauv a xov tooj cua . Qhov loj dua qhov sib txawv ntawm thickness los yog ntom ntawm ob qhov chaw ntawm qhov kev kawm, qhov loj qhov sib txawv nyob rau hauv hluav taws xob ceev los yog sib piv.
Ib yam li ntawd, vim li cas thiaj xav tau qhov sib txawv hauv daim duab radiographic? Ceev / brightness thiab sib piv yog xav tau ua kom cov ntsiab lus ntawm a xov tooj cua pom. Qhov siab dua sib piv , qhov zoo dua qhov pom ntawm cov ntsiab lus. Kawm paub sib piv hais txog qhov sib txawv ntawm cov ntaub so ntswg ceev ntawm qhov chaw anatomical uas nyob ib sab.
Tom qab ntawd, ib tug kuj yuav nug, KV cuam tshuam qhov sib txawv li cas?
Hloov KV yog txoj cai tswj ntawm sib piv hauv radiography. X-ray duab ntawm ib yam khoom nyob rau hauv tus neeg mob lub cev yog nyob rau hauv daim ntawv ntawm ib tug duab ntxoov ntxoo. Cov khoom nkag mus thiab sib piv tuaj yeem hloov tau los ntawm kev hloov pauv KV . X-ray attenuation thiab tag nrho lub cev nkag mus tau hloov nrog photon zog.
Yuav ua li cas sib txawv thaum koj nce kVp?
Qhov siab dua kVp ua , qhov ntev ntawm cov nplai sib piv ntawm zaj duab xis. Yog vim li cas High kVp ua qis sib piv ? Kev nce ntxiv tus kVp nce muaj feem ntau tawg los yog tawg hluav taws xob tsim. yog li ntawd nws txo qis Zoo sib xws.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Qhov sib txawv ntawm qhov sib txawv ntawm 97 yog dab tsi?
Teb thiab piav qhia: 9/7 x lub reciprocal = 1. 1 / 9/7 = reciprocal
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm - 12?
Qhov ntxeev ntawm 12 yog 12, lossis credit ntawm $ 12
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no