Cover Imaging for Physicists

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Basic principle of PET
Positron emitters (β+) used as
biomarkers
Positron-electron annihilation
⇒ Two γ-quanta with 511 keV
each are emitted under approx.
180°
 Coincidence detection in a
detector ring
Radioactive
Isotope
511 keV
γ-quant
511 keV
γ-quant
Electron
β+
γ 1
γ2
PET
ESTRO Teaching Course Advanced Imaging: PET – Basic Principles 3