The smallest PET.

Combining cutting-edge technology with simplicity, we at Positrigo work to bring the smallest and most affordable brain PET scanner to the people.

Cutting-edge technology.

Dementia is a major problem in our aging societies costing nearly a trillion USD worldwide per year. Treatments are on the horizon, but an affordable and widely available diagnostic technique is still missing. Positrigo’s brain positron emission tomography system offers functional brain imaging to everyone at a fraction of today’s cost.

Based on a prototype developed at ETH Zurich, Positrigo strives for the certification of it’s imaging system as a medical device under CE and FDA regulations and enter the market by 2021.

The Team

Dr. Jannis Fischer

Founder & Co-CEO

Jannis studied physics at FU and HU Berlin with exchanges to ETH Zurich, University of California Los Angeles, and CERN. During is PhD at ETH Zurich, he worked on the development of SAFIR, a small animal PET system with unprecedented temporal resolution. BPET (a SAFIR spin-off) started in 2017 with the grant of an ETH Pioneer Fellowship to Max and Jannis. Since then other awards have followed, e.g. VentureKick and Forbes Europe 30 under 30. Jannis works mainly on BPET electronics, image reconstruction, and business development.

Dr. Max Ahnen

Founder & Co-CEO

After studying physics at the TU Munich, the Max Planck Institute for Physics, and Durham University, Max became a PhD student on gamma-ray Cherenkov telescopes at the ETH Zurich Institute for Particle Physics. Upon finishing his PhD, Max, together with Jannis, was awarded the 2017 ETH Pioneer Fellowship for the Brain PET Project.  VentureKick and Forbes Europe 30 under 30 followed. Max spends his time advancing the business, writing software, and developing the BPET scanner.

Prof. Dr. Bruno Weber

Co-Founder & Director

Co-Founder of Swisstrace and Professor at the Institute for Pharmacology and Toxicology at University of Zurich, Weber brings together expertise from PET imaging, biology, and business.

Dr. Werner Lustermann


Senior scientist and responsible for the engineers and technicians pool at the Institute of Particle Physics and Astrophysics, with 20+ years experience. He has a track record of ground breaking detectors included in the CMS experiment at CERN, AMS1 aboard a NASA Space Shuttle Mission, AMS2 operational on the International Space Station, the First G-APD Cherenkov Telescope on La Palma, and the ambitious SAFIR PET scanner.

Prof. Dr. Günther Dissertori


Professor for Particle Physics at ETH Zurich, Dissertori brings 20+ years of experience in particle physics into our project. The current head of the Institute of Particle Physics and Astrophysics at ETH and former Deputy Spokesperson of the CMS experiment at CERN.

Prof. em. Dr. Alfred Buck


Co-Founder of Swisstrace and Professor and Director at the Nuclear Medicine section of the University Hospital Zurich. Buck helps the team build a device from clinicians, for clinicians.


Positrigo GmbH
c/o ETH Zurich HPK F32
Otto-Stern-Weg 5
8093 Zurich

Managing Directors

Dr. Max Ahnen

Dr. Jannis Fischer

Prof. Dr. Bruno Weber

Contact us

Phone: +41 44 633 2023


Our technology was developed at ETH Zurich with support from University of Zurich and University Hospital of Zurich. We are furthermore supported by: