Parallax error caused by the detector crystal thickness degrades spatial resolution at the
peripheral regions of the field-of-view (FOV) of a scanner. To resolve this issue, depth-of-…

Positronium (Ps) is generated before electron–positron annihilation in positron emission
tomography (PET). As the Ps lifetime reflects the surrounding electron density, we aimed at its …

Objective. In carbon ion therapy, the visualization of the range of incident particles in a
patient body is important for treatment verification. In-beam positron emission tomography (PET) …

In advanced ion therapy, the visualization of the range of incident ions in a patient's body is
important for exploiting the advantages of this type of therapy. It is ideal to use radioactive ion …

Research on the distribution and dynamics of photoassimilates in plants, especially those in
fruits, is important for increasing food production. Positron emission tomography (PET) and …

The distribution of fragmentation products predicted by Monte Carlo simulations of heavy ion
therapy depend on the hadronic physics model chosen in the simulation. This work aims to …

Silicon photomultipliers (SiPMs) have become a standard photodetector to be coupled with
scintillators in PET, but the SiPM saturation is limiting the performance achievable with the …

Positronium (Ps) imaging is getting attention for nuclear medicine applications, but appropriate
radionuclides have not been evaluated systematically. This paper investigated the use of …

Whole gamma imaging (WGI) is a new concept that combines PET and Compton imaging
by inserting a scatter detector ring into a PET ring. We developed a WGI prototype and …

In heavy-ion therapy, the stopping position of primary ions in tumours needs to be monitored
for effective treatment and to prevent overdose exposure to normal tissues. Positron-…