Summary
Summary Topic 8 Brain Scanning
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Edexcel Biology Topic 8 Brain Scanning
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Brain ScanningShow structures
Not real time and
images - doesn't
-
show brain
functionality
S.I units MRI and CTSccu
Real time >
- shows brain
function
FMRI and PET Scan
PETScan
targets
Radioactive metabolites - that need them
↳ organs
radioactivity can be traced
observe whether he
functioning
>
-
can is
organ
properly
Cyclotron - machine in he hospital that
manufactures radioactive metabolites
-short
half-life means that done in hospital
into patient
injet
>
-
Radioactive cells uptake lots
glucose
- cancer
due to .
malignant growth
Position collides with nearest electron
electron leaves produces radiation
gamma
-
Detected
.
3
by
Dimensional
scanner
Disadvantage
-
cyclotron needed
-
Expose to radioactive ->
cancer ,
damage he DNA
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