Corrigendum to “Proton and Carbon Ion Beam Spot Size Measurement Using 5 Different Detector Types” [Int J Part Ther. 2025;15:100638]
Matthias Witt, Uli Weber, Sebastian Adeberg, Kilian-Simon Baumann, Klemens Zink

Abstract
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Taxonomy
TopicsRadiation Therapy and Dosimetry · Photocathodes and Microchannel Plates · Particle Detector Development and Performance
The authors regret:
In the original version of the supplementary material, we identified two issues in Figure 4:fx1
Incorrect y-axis label: The multiplier “×10⁴” on the y-axis label was inadvertently cropped in the published figure, leading to a misleading axis scale.
Incorrect slope for proton data (220 MeV): The slope of the curve for protons at 220 MeV was incorrect due to a missing scaling factor applied to the data. This has now been corrected by including the appropriate factor.
Improved readability: We have adjusted the marker size and line width in the figure to enhance visual clarity and readability.
File format change: The supplementary material is now provided as a PDF file instead of a DOCX file to ensure consistent formatting and appearance.
Both errors have been corrected in the updated figure. A marked-up version is provided alongside the corrected supplementary material for reference.
The authors would like to apologize for any inconvenience caused.
