S/N

SPECT

PET

References

1

The radioisotope generates gamma decay.

PET imaging utilizes positron-emitting radioisotopes.

[20] [29]

2

Like CT, the photons are absorbed in multiple directions.

Absorb projections in different directions. However, PET can only generate two photons in two different directions at a time.

[29]

3

The rotating anger camera serves as the detector to collect projection data from various angles.

The detector is a special coincidence detection circuitry used to simultaneously detect two photons travelling in opposite directions.

[20] [29]