Video: Dab tsi yog radioisotopes siv rau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Radioisotopes yog siv kom ua raws li txoj hauv kev ntawm biochemical cov tshuaj tiv thaiv lossis txiav txim siab seb cov khoom puas raug faib rau hauv lub cev. Radioactive tracers kuj yog siv hauv ntau daim ntawv thov kev kho mob, suav nrog kev kuaj mob thiab kev kho mob.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog kev siv ntawm radioisotopes?
Radioactive isotopes muaj ntau yam pab tau daim ntawv thov . Hauv tshuaj kho mob , rau piv txwv , cobalt-60 feem ntau siv los ua hluav taws xob los ntes kev txhim kho ntawm mob qog noj ntshav . Lwm cov xov tooj cua isotopes yog siv los ua cov cim rau kev kuaj mob thiab hauv kev tshawb fawb txog cov txheej txheem metabolic.
Tsis tas li ntawd, qee qhov piv txwv ntawm kev siv radioisotopes hauv kev tshawb fawb txog biology yog dab tsi? Cesuim-137 thiab Cobalt-60 yog ob qho tib si siv kom txo qis qhov loj ntawm cov qog hauv lub cev ntawm cov neeg mob qog noj ntshav. Cobalt-60 kuj yog siv mus sterilize cov cuab yeej kho mob. Qee cov radioisotopes yog siv txhawm rau kuaj xyuas thiab kho lwm yam kab mob, xws li Chromium-51, uas pab cov kws kho mob txiav txim siab txog kev ciaj sia ntawm cov qe ntshav liab.
Tsis tas li ntawd, 3 kev siv xov tooj cua isotopes yog dab tsi?
Cov tshuaj sib txawv yog siv rau lub hlwb, pob txha, daim siab, spleen thiab lub raum imaging thiab kuj rau cov ntshav khiav. Siv los nrhiav cov dej xau hauv cov kav dej muaj… thiab hauv cov kev tshawb fawb roj. Siv hauv nuclear tshuaj kho mob rau nuclear cardiology thiab qog nrhiav pom. Siv los kawm cov pob txha tsim thiab cov metabolism.
Dab tsi yog isotopes thiab piv txwv?
Rau piv txwv Ib qho atom nrog 6 protons yuav tsum yog carbon, thiab atom nrog 92 protons yuav tsum yog uranium. Ib daim ntawv thib peb ntawm hydrogen hu ua tritium muaj ib qho proton thiab ob lub neutrons: nws cov lej yog 3. Thaum lub caij lub atoms muaj cov lej sib txawv ntawm cov neutrons lawv tau hais tias yog isotopes ntawm lub ntsiab.
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