Publications by authors named "Gregor Pahn"

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Electron Density and Effective Atomic Number as Quantitative Biomarkers for Differentiating Malignant Brain Tumors: An Exploratory Study with Machine Learning.
Tsubasa Nakano, Daisuke Hirahara, Tomohito Hasegawa, Kiyohisa Kamimura, Masanori Nakajo, Gregor Pahn

Tomography· October 2025

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Electron Density and Effective Atomic Number of Normal-Appearing Adult Brain Tissues: Age-Related Changes and Correlation with Myelin Content.
Tomohito Hasegawa, Masanori Nakajo, Misaki Gohara, Kiyohisa Kamimura, Tsubasa Nakano, Gregor Pahn

Tomography· August 2025

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Enhancing clot composition analysis in acute ischemic stroke with non-contrast spectral CT: A phantom-based study.
Juyu Chueh, Gregor Pahn, Charlie Shin, Michael Cleri, Emanuele Orrù

Neuroradiol J· July 2025

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Dual-Energy CT, Virtual Non-Calcium Bone Marrow Imaging of the Spine: An AI-Assisted, Volumetric Evaluation of a Reference Cohort with 500 CT Scans.
Philipp Fervers, Florian Fervers, Mathilda Weisthoff, Miriam Rinneburger, David Zopfs, Gregor Pahn

Diagnostics (Basel)· March 2022

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Detection of patients with chronic thromboembolic pulmonary hypertension by volumetric iodine quantification in the lung-a case control study.
Jan Robert Kroeger, Jakob Zöllner, Felix Gerhardt, Stephan Rosenkranz, Roman Johannes Gertz, Gregor Pahn

Quant Imaging Med Surg· February 2022

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Calcium scoring using virtual non-contrast images from a dual-layer spectral detector CT: comparison to true non-contrast data and evaluation of proportionality factor in a large patient collective.
Felix G Gassert, Claudio E Schacky, Christina Müller-Leisse, Florian T Gassert, Gregor Pahn

Eur Radiol· August 2021

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Influence of acquisition settings and radiation exposure on CT lung densitometry-An anthropomorphic ex vivo phantom study.
Patricia Leutz-Schmidt, Mark O Wielpütz, Stephan Skornitzke, Oliver Weinheimer, Hans-Ulrich Kauczor, Gregor Pahn

PLoS One· October 2020

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Spectral Photon-Counting Computed Tomography for Coronary Stent Imaging: Evaluation of the Potential Clinical Impact for the Delineation of In-Stent Restenosis.
Grischa Bratke, Tilman Hickethier, Daniel Bar-Ness, Alexander Christian Bunck, David Maintz, Gregor Pahn

Invest Radiol· February 2020

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Liver lesion localisation and classification with convolutional neural networks: a comparison between conventional and spectral computed tomography.
Nadav Shapira, Julia Fokuhl, Manuel Schultheiß, Stefanie Beck, Felix K Kopp, Gregor Pahn

Biomed Phys Eng Express· January 2020

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Experimental application of an automated alignment correction algorithm for geological CT imaging: phantom study and application to sediment cores from cold-water coral mounds.
Stephan Skornitzke, Jacek Raddatz, André Bahr, Gregor Pahn, Hans-Ulrich Kauczor

Eur Radiol Exp· March 2019

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Thoracic-abdominal imaging with a novel dual-layer spectral detector CT: intra-individual comparison of image quality and radiation dose with 128-row single-energy acquisition.
Stefan Haneder, Florian Siedek, Jonas Doerner, Gregor Pahn, Nils Grosse Hokamp

Acta Radiol· December 2018

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Dual-energy CT iodine maps as an alternative quantitative imaging biomarker to abdominal CT perfusion: determination of appropriate trigger delays for acquisition using bolus tracking.
Stephan Skornitzke, Franziska Fritz, Philipp Mayer, Marco Koell, Jens Hansen, Gregor Pahn

Br J Radiol· May 2018

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Utilization of virtual mono-energetic images (MonoE) derived from a dual-layer spectral detector CT (SDCT) for the assessment of abdominal arteries in venous contrast phase scans.
Tilman Hickethier, Jonathan Byrtus, Myriam Hauger, Andra-Iza Iuga, Gregor Pahn

Eur J Radiol· February 2018

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Influence of spectral detector CT based monoenergetic images on the computer-aided detection of pulmonary artery embolism.
Jan Robert Kröger, Tilman Hickethier, Gregor Pahn, Felix Gerhardt, David Maintz

Eur J Radiol· October 2017

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Improvement of Image Quality in Unenhanced Dual-Layer CT of the Head Using Virtual Monoenergetic Images Compared With Polyenergetic Single-Energy CT.
Victor Neuhaus, Nuran Abdullayev, Nils Große Hokamp, Gregor Pahn, Christoph Kabbasch

Invest Radiol· August 2017

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Monoenergetic reconstructions for imaging of coronary artery stents using spectral detector CT: In-vitro experience and comparison to conventional images.
Tilman Hickethier, Bettina Baeßler, Jan Robert Kroeger, Jonas Doerner, Gregor Pahn

J Cardiovasc Comput Tomogr· June 2017

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Toward standardized quantitative image quality (IQ) assessment in computed tomography (CT): A comprehensive framework for automated and comparative IQ analysis based on ICRU Report 87.
Gregor Pahn, Stephan Skornitzke, Hans-Peter Schlemmer, Hans-Ulrich Kauczor, Wolfram Stiller

Phys Med· January 2016

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Correlation of quantitative dual-energy computed tomography iodine maps and abdominal computed tomography perfusion measurements: are single-acquisition dual-energy computed tomography iodine maps more than a reduced-dose surrogate of conventional computed tomography perfusion?
Wolfram Stiller, Stephan Skornitzke, Franziska Fritz, Miriam Klauss, Jens Hansen, Gregor Pahn

Invest Radiol· October 2015

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