Göttingen 2025 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 8: Particle Radiography
ST 8.2: Vortrag
Donnerstag, 3. April 2025, 16:30–16:45, ZHG003
A Two Plane Proton Imaging System Using ATLAS FE-I4 Pixel Detectors — •Hendrik Speiser1, Claus Maximilian Bäcker2, Christian Bäumer2, Johannes Esser2, Kevin Kröninger1, Annsofie Tappe1, Helen Thews1, and Jens Weingarten1 — 1TU Dortmund — 2West German Proton Therapy Center Essen
For years, proton therapy is increasingly being used to treat cancer because of its well-known advantages, such as the high dose precision of protons. However, exploiting this precision requires improved imaging techniques to ensure accurate patient positioning and dose delivery. One such technique is proton radiography, where an image of the water equivalent thickness (WET) distribution of the patient is taken measuring the residual proton energy.
Former studies showed the feasibility of proton radiography using a single radiation hard ATLAS FE-I4 pixel detector. To improve the WET resolution of the resulting images, a second pixel detector of the same kind and a water equivalent absorber between both detectors are used. Proof-of-concept simulation studies of the so-called Two-Plane-System showed promising results. Thus, the aim of the project is to realize such a system and investigate the yielded WET resolution. To this purpose, prototype measurements were conducted at the West German Proton Therapy Centre in Essen.
This talk will briefly introduce the Two-Plane-System. Subsequently, the first results of the prototype measurement using ATLAS FE-I4 pixel detectors and future steps of the project are presented.
Keywords: Proton Radiography; Pixel detector; Proton Therapy; Proton Imaging; Imaging