CT Scan vs PET Scan
Computed Tomography hu ua CT scan siv X rays kom tau txais cov yeeb yaj kiab axial. Qhov no txawv ntawm cov yeeb yaj kiab X-ray ib txwm vim nws tuaj yeem muab cov ntsiab lus ntxiv txog cov ntaub so ntswg. X-ray yog dhau los ntawm ib sab thiab lub sensor yuav ntes cov rays ntawm sab nraud. Qhov no yuav tshwm sim nyob ib ncig ntawm lub cev. Cov kev sojntsuam tuaj yeem txav mus rau hauv lub voj voog thiab 360 degree nthuav tawm yuav pab kom tau txais cov duab meej. Lub khoos phis tawj yuav suav thiab muab qhov pom ntawm cov ntaub so ntswg raws li hluav taws xob. Hauv CT cov hluav taws xob yog muab los ntawm sab nraud los ntawm X rays.
PET scan yog daim ntawv luv luv ntawm Positron Emission Tomography. Positron raug tso tawm thaum muaj kev cuam tshuam nuclear. Positron zoo li ib qho hluav taws xob hauv qhov hnyav tab sis muaj txiaj ntsig zoo. Cov isotopes (cov atoms tuaj yeem faib thiab tawm cov kab hluav taws xob) siv hauv PET scan. Feem ntau FDG (Fluro deoxy glucose) yog siv. Qhov no yuav emit cov positrons. Feem ntau cov xov tooj cua FDA raug coj los ntawm cov ntaub so ntswg. FDA zoo li qabzib. Glucose yog cov roj rau lub zog rau cov ntaub so ntswg. Yog li Glucose yuav raug coj los ntawm cov ntaub so ntswg. Tib txoj kev FDG kuj raug coj los ntawm cov ntaub so ntswg metabolically. Yog li cov khoom siv hluav taws xob (piv txwv li: isotopes nrog lub neej luv luv xws li carbon-11 (~ 20 min), nitrogen-13 (~ 10 min), oxygen-15 (~ 2 min), thiab fluorine-18 (~ 110 min)] yuav txuas rau cov piam thaj. Thaum cov piam thaj raug coj los ntawm cov ntaub so ntswg, cov tshuaj radioactive kuj tau coj mus rau hauv cov ntaub so ntswg. Tus nqi ntawm uptake yuav pab peb txheeb xyuas cov haujlwm ntawm cov ntaub so ntswg. Raws li tus nqi coj los ntawm cov ntaub so ntswg, tus nqi emission sib txawv. Cov positrons yuav hnov mob nrog cov electrons hauv cov ntaub so ntswg. Electron yog ib qho tsis zoo them nqi thiab positro yog ib qho zoo them nqi. Cov tshuaj tiv thaiv no yuav raug xam los ntawm lub computer thiab cov duab kawg yuav muab los ntawm lub computer. PET scan yog qhov tseem ceeb txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhuam hniav, nws yuav tsum tau muab pov tseg. Cov ntaub so ntswg mob cancer feem ntau faib sai heev, hauv lwm lo lus lawv yog ACTIVE. Yog li lawv yuav noj qabzib ntau dua los ntawm cov ntshav.
PET scan xav tau sijhawm ntau dua li CT scan. Vim tias, muaj sijhawm tos los ntawm lub sijhawm txhaj tshuaj thiab cov ntaub so ntswg coj cov piam thaj. Feem ntau lub sijhawm sib txawv yog ze li ib teev.
PET scan tuaj yeem ua ke nrog CT scan lossis MRI scan.
In summary, › CT thiab PET scan yog cov txheej txheem siv los ntawm cov kws kho mob.
› Ob leeg pab nrhiav kev sib kis ntawm tus kabmob.
› Ob leeg tuaj yeem ua rau muaj kev pheej hmoo mob qog noj ntshav raws li lawv siv RADIATION.
› PET scan yog qhov zoo tshaj rau CT vim nws yuav muab cov haujlwm metabolic ntawm cov ntaub so ntswg.
› PET scan xav tau sijhawm ntau dua piv nrog CT.
› PET scan siv RADIO ACTIVE isotopes, uas tawm hluav taws xob, tab sis CT siv X-rays.
› CT yog cov txheej txheem sib piv yooj yim dua li PET scan
