May 24 – 28, 2021
America/Vancouver timezone

A Proton Computed Tomography Demonstrator for Stopping Power Measurements

May 26, 2021, 9:30 AM
Parallel session talk Technology Transfer Technology Transfer


Felix Ulrich-Pur (Institue for High Energy Physics (HEPHY), Vienna)


Particle therapy is an established method to treat deep-seated tumours, using accelerator-produced ion beams. For treatment planning, the precise knowledge of the stopping power (SP) within the patient is vital. Conversion errors from x-ray CT measurements to SP introduce uncertainties in the applied dose distribution. Using a proton Computed Tomography (pCT) system to directly measure the SP could potentially increase the accuracy of treatment planning.
A pCT demonstrator, consisting of double-sided silicon strip detectors (DSSD) as tracker and plastic scintillator slabs coupled to silicon photomultipliers (SiPM) as a range telescope, was developed. After a major hardware upgrade of the range telescope, a 3D tomogram of an aluminium stair phantom was recorded at MedAustron.
Imaging results as well as current design studies for a new prototype, based on time-of-flight detectors, will be shown.

Primary author

Felix Ulrich-Pur (Institue for High Energy Physics (HEPHY), Vienna)


Thomas Bergauer (Austrian Academy of Sciences (AT)) Alexander Burker (Vienna University of Technology) Mr Albert Hirtl (TU Wien) Christian Irmler (Austrian Academy of Sciences (AT)) Stefanie Kaser Florian Michael Pitters (HEPHY)

Presentation materials