Göttingen 2025 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 8: Particle Radiography
ST 8.4: Vortrag
Donnerstag, 3. April 2025, 17:00–17:15, ZHG003
First experimental time-of-flight-based helium radiography of a mouse phantom — •Felix Ulrich-Pur1, Ashish Bisht2, Thomas Bergauer3, Tetyana Galatyuk1,4,5, Albert Hirtl6, Matthias Kausel6,7, Mladen Kis1, Barbara Knäusl8, Yevhen Kozymka4, Wilhelm Krüger4, Sergey Linev1, Jan Michel1, Jerzy Pietraszko1, Christian Joachim Schmidt1, Michael Träger1, Michael Traxler1, and Matteo Centis Vignali8 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH — 2Fondazione Bruno Kessler — 3Austrian Academy of Sciences, Institute of High Energy Physics — 4Technische Universität Darmstadt — 5Helmholtz Forschungsakademie Hessen für FAIR — 6TU Wien, Atominstitut — 7EBG MedAustron — 8Medical University of Vienna, Department of Radiation Oncology
Ion computed tomography (iCT) is an imaging modality for the direct measurement of the relative stopping power (RSP) distribution inside the patient. To reconstruct the RSP map, the traversed path and corresponding energy loss of ions passing through the patient have to be estimated. While this is usually done via a tracking system and a separate calorimeter, we present a so-called time-of-flight (TOF) iCT system that uses only one detector technology, namely Low Gain Avalance Diodes (LGADs), for both tracking and the energy loss measurement. In this contribution, first ion images, recorded with the TOF-iCT system, will be shown, including a proton radiograph of an aluminium stair phantom and a helium radiograph of a mouse phantom.
Keywords: Ion Computed Tomography; Time-of-Flight Ion Computed Tomography; Helium Radiography; Proton Radiography; Low Gain Avalanche Diode