ORIGINAL RESEARCH article

Front. Neurol.

Sec. Endovascular and Interventional Neurology

Volume 16 - 2025 | doi: 10.3389/fneur.2025.1608308

Photon Counting CT Versus Flat-Panel CT in the Evaluation of Enhancement Patterns in Chronic Subdural Hematoma After Middle Meningeal Artery Embolization

Provisionally accepted
Christoph  Johannes MaurerChristoph Johannes Maurer1*Lars  BehrensLars Behrens1Stefan  SchieleStefan Schiele2Mahmoud  ZakiMahmoud Zaki1Guilherme  QuintGuilherme Quint1Christina  WolfertChristina Wolfert1Björn  SommerBjörn Sommer1Franz  Josef StanglFranz Josef Stangl1Ansgar  BerlisAnsgar Berlis1
  • 1Augsburg University Hospital, Augsburg, Germany
  • 2Institute of Mathematics, University of Augsburg, Augsburg, Bavaria, Germany

The final, formatted version of the article will be published soon.

This retrospective observational study aimed to assess whether specific enhancement patterns in chronic subdural hematoma (cSDH) following middle meningeal artery embolization can predict radiological outcomes and to evaluate the utility of photoncounting computed tomography (PCCT) in distinguishing contrast enhancement from hemorrhage. A total of 105 cSDHs were included, with patients undergoing either PCCT or flat-panel computed tomography immediately after embolization. Two independent raters evaluated enhancement patterns, and diagnostic confidence and interrater agreement were assessed. PCCT yielded higher diagnostic confidence and interrater reliability than flat-panel imaging. Internal enhancement and fluid-fluid levels were associated with hematoma persistence or recurrence. These findings suggest that PCCT improves post-embolization assessment in cSDH and that certain enhancement patterns may serve as imaging biomarkers for unfavorable outcomes.

Keywords: Photon counting CT, middle meningeal artery embolization, chronic subdural hematoma, Contrast Enhancement, Hemorrhage Differentiation

Received: 08 Apr 2025; Accepted: 05 May 2025.

Copyright: © 2025 Maurer, Behrens, Schiele, Zaki, Quint, Wolfert, Sommer, Stangl and Berlis. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Christoph Johannes Maurer, Augsburg University Hospital, Augsburg, Germany

Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.