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Samenvatting Neuroradiologie
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Samenvatting neuroradiologie 2 de master geneeskunde universiteit Gent. No nonsense samenvattingen, enkel wat je moet kennen.
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Neuroradiologie samenvatngCT - Densiteit
- 0 = water -1000 is lucht 3000 bot
Elektronen densiteit - Grijze stof is denser dan wite stof ->witer ( wite stof
bevat meer vet dus donkerder )
- Vet donker
- Contrast zorgt voor densiteitsverhoging bloedvaten
en capterende ( meningen, CSV ) -> WIT
MRI - T2 beelden
o Lang signaal behoudt van T2-> Wit
Waves, verschillende soorten o Grijze stof is witer dan wite stof
o Water houdt lang vast -> Wit
Grijze stof is referente o CSF hoogste signaal
o Flair: Water supressie -> water is donker nu,
goed voor anatomie te bekijken en small
lesions dicht bij water
o T2 ster voor ijzer detecteeoude bloedingen
o Vet wit, maar niet helder wit gelijk T1
- T1 beelden
o Wite stof is wit, grijze stof is grijs
o Water donker
o Vet zeer wit behalve bij FS
o GD contrast -> wit waar het passeert. GD gaat
niet door BHB
o Hippocampus detecte met IR beeldvorming
- Bij MRI is bot zwart -> geen beweegbare protonen
- Time of fight voor bloedvaten studie: hoge frequente
RF
Verouderen - 5-10 procent gewichts veries is fysiologisch
- Verbreden gyri
- Toename kluwens en plaques. Indien te veel AZD
Demente - Alzheimer en frontotemporale kwab degenerate
( FTLD ) geven meer anatomische atrofe
Hoe onderscheid maken T1 T2 CT?
- Kijken naar grijze en wite stof-> CT= wite stof is donkerder T1 = wite stof is wit
- T2 = wite stof is donkerder
- Kijken naar bot-> CT = wit T2 = ZWART
- Kijken naar water -> CT= donker T2 = Wit T1= zwart
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