The image illustrates the processing principles of a
positron emission tomograph (PET) commonly used in
cancer diagnostics. It shows how during the
annihilation process two
photons are emitted in diametrically opposite directions. These photons are registered by the scanner as soon as they arrive at the detector ring. After the registration, the data is forwarded to a processing unit which decides if two registered events are selected as a so-called
coincidence event. All coincidences are forwarded to the image processing unit where the final image data is produced via mathematical image reconstruction procedures.
This work has been released into the public domain by its author, I,
Jens Maus. This applies worldwide. In some countries this may not be legally possible; if so: I,
Jens Maus grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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Data processing feature of an tomographic acquisition using a positron emission tomograph. It illustrates the principials of a
PET acquisition right from the
annihilation process, through how the lines of response
LOR are registered by the tom
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