The PPC 12.5 has finished successfully with over 90 participants from 13 time zones all over the World.

• 8 invited talks,
• 35 oral presentations,
• 17 posters

were presented during five days of the conference. Their abstracts and slides/posters can be found in the programme.

Two round table discussions were focused on:

• Radioisotope positron sources
• Positron spectroscopy data analysis
• Positrons in medicine

The Book of Abstracts is updated with all changes that occurred during the PPC 12.5.

The organizers thank all participants for their contribution to the conference.