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EJNMMI Physics
Fig. 2 | EJNMMI Physics

Fig. 2

From: Comparative studies of the sensitivities of sparse and full geometries of Total-Body PET scanners built from crystals and plastic scintillators

Fig. 2

Illustration of scintillators arrangements, the principle of detection and reconstruction of annihilation positions. (Left) Representation of J-PET plastic scintillator-based technology where the axially arranged scintillator (blue) is readout by two photomultipliers of both ends (gray). (Right) Representation of crystal-based technology with the radially arranged scintillators (blue), where each one is read out with corresponding photomultipliers (gray). The fractional energy resolution for the energy deposited by the annihilation photon in a single plastic scintillator strip has been measured \(\sigma (E)/E\approx 0.044/\sqrt{E(MeV)}\), based on the previous investigation in J-PET collaboration [25]

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