2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Positron emission tomography (PET) siv me me ntawm radioactive cov ntaub ntawv hu ua radiotracers radiotracers Radiotracers yog cov khoom txuas nrog, lossis "labeled" nrog, me me ntawm cov khoom siv hluav taws xob. Lawv sau nyob rau hauv cov qog los yog cheeb tsam ntawm o. Lawv kuj tuaj yeem khi rau cov protein tshwj xeeb hauv lub cev. Cov xov tooj cua tshaj plaws yog F-18 fluorodeoxyglucose (FDG), molecule zoo ib yam li qabzib. https://www.radiologyinfo.org › info › gennuclear
Tshuaj Nuclear General - RadiologyInfo.org
lossis cov tshuaj radiopasm, lub koob yees duab tshwj xeeb thiab lub khoos phis tawj los ntsuas lub cev thiab cov ntaub so ntswg ua haujlwm. Los ntawm kev txheeb xyuas cov kev hloov pauv ntawm qib cellular, PET tuaj yeem kuaj pom qhov pib ntxov ntawm tus kab mob ua ntej lwm yam kev kuaj pom tau.
Yuav ua li cas cov tshuaj yeeb tshuaj yog siv hauv PET scan?
PET xov tooj cua uas nquag siv tshaj plaws yog 2-[18F]fluoro-2-D-deoxyglucose {[18 F]FDG}, radiolabelled analogue ntawm qabzib. FDG PET-CT tam sim no tau dhau los ua ib qho chaw nres tsheb hauv kev kuaj mob hauv kev kuaj mob, kev ua haujlwm, rov ua kom rov zoo thiab ua rau muaj ntau yam qog noj ntshav.
Dab tsi ua rau hluav taws xob hauv PET scans?
Ua ntej koj PET-CT scan, koj yuav tau txais kev txhaj tshuaj me me ntawm cov suab thaj radioactive hu ua fluorodeoxyglucose-18. Cov tshuaj no qee zaum hu ua FGD-18, radioactive glucose, los yog ib tug tracer.
Cov duab dab tsiPuas yog PET scans tsim?
Positron emission tomography (PET) scans pom cov tsos mob ntxov ntawm mob qog noj ntshav, kab mob plawv thiab mob hlwb. Ib qho kev txhaj tshuaj radioactive tracer pom cov kab mob. Kev sib xyaw PET-CT scan ua rau 3D dluabrau kev kuaj pom tseeb dua.
Yuav ua li cas thiaj ua tau lub xov tooj cua?
Lawv yog tsim los ntawm kev tawm tsam nuclear. Ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws yog kev nqus ntawm cov neutron los ntawm lub atomic nucleus, uas cov lej ntawm cov ntsiab lus txhawj xeeb nce los ntawm 1 rau txhua neutron absorbed.
Pom zoo:
Nyob rau hauv angiosperms pollen yog tsim nyob rau hauv anthers ib feem ntawm?
Nyob rau hauv angiosperms, paj ntoos yog tsim los ntawm anthers ntawm the stamens hauv paj. Hauv gymnosperms, nws yog tsim nyob rau hauv microsporophylls ntawm microstrobili (txiv neej paj ntoos cones). Pollen muaj ib los yog ntau tshaj cov noob qoob loo thiab ib lub qe qe.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Leej twg detering nyob rau hauv tag nrho cov nyob ntsiag to nyob rau sab hnub poob pem hauv ntej?
Detering yog tus neeg ua liaj ua teb los ntawm Txhua Tus Neeg Tsis Txaus Siabntawm Sab Hnub Poob los ntawm Erich Maria Remarque. Nws muaj siab mos siab muag, tshwj xeeb tshaj yog thaum nws los txog rau nees. Nws muaj kev kub ntxhov loj heev thaum nws hnov cov nees quaj thiab txawm sim tua lawv kom kawg lawv txoj kev txom nyem.
Nyob rau hauv lub cev ntawm tus txiv neej aqueduct ntawm sylvius tshwm sim nyob rau hauv?
Lub ventricles muaj plaub qhov khoob, cov kua dej puv hauv lub hlwb. … Nws txuas nrog lub paj hlwb aqueduct lossis aqueduct ntawm Sylvius hauv qhov nruab nrab ntawm lub hlwbrau plaub lub ventricle hauv pons thiab medulla. Lub aqueduct ntawm Sylvius nyob qhov twg?
Leej twg yog bennie nyob rau hauv lub raisin nyob rau hauv lub hnub?
Beneatha Younger ("Bennie") Mama tus ntxhais thiab W alter tus muam. Beneatha yog ib tug neeg txawj ntse. Nees nkaum xyoo, nws mus kawm ntawv qib siab thiab kawm tau ntawv zoo dua li lwm cov Tsev Neeg Hluas. Qee qhov ntawm nws tus kheej kev ntseeg thiab kev xav tau ua rau nws nyob deb ntawm niam txiv.
