EN
Axial PET is a novel PET concept based on axially oriented crystals. The axial orientation of the scintillating elements mitigates the uncertainty in the determination of the depth of interaction and provides a scalable and flexible design than can be adapted to different imaging scenarios. Two Axial PET modules have been fully assembled and characterized at CERN with both point-like and extended sources. The capability of Axial PET to break the trade-off between sensitivity and spatial resolution was successfully demonstrated.