Gamma camera (AQA A-Level Physics): Flashcards
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Device detecting gamma rays for 2D/3D medical images
Device detecting gamma rays for 2D/3D medical images
Gamma camera
Core component of a gamma camera
Core component of a gamma camera
Photomultiplier tube (PMT)
Function of photocathode in gamma camera
Function of photocathode in gamma camera
Releases electrons when gamma photons hit it
Role of dynodes in PMT
Role of dynodes in PMT
Electrodes at higher potentials causing electron multiplication
Electron multiplication process in PMT
Electron multiplication process in PMT
Secondary emission
Function of lead collimator
Function of lead collimator
Filters scattered photons, allows only parallel ones through
Function of scintillator
Function of scintillator
Converts gamma photons to visible light photons
How gamma camera creates image
How gamma camera creates image
Computer processes electrical signals, reconstructs spatial distribution of gamma rays
Medical use of gamma cameras
Medical use of gamma cameras
Assess organ function using radioactive tracer
Radioactive isotope used in thyroid scan
Radioactive isotope used in thyroid scan
Radioactive iodine isotope