Potential dose reduction and image quality improvement in chest CT with a photon-counting CT compared to a new dual-source CT.

To compare potential dose reduction and quality improvement in chest CT images with Photon-Counting CT (PCCT) versus a Dual-Source CT (DSCT). Acquisitions on phantoms were performed on a DSCT and a PCCT at 5 dose levels (9.5/7.5/6.0/2.5/0.4 mGy). Noise power spectrum (NPS) and task-based transfer function (TTF) were calculated to assess noise magnitude and noise texture (f For all dose levels, noise magnitude was significantly lower with PCCT than with DSCT (-44.7 ± 3.0 %; p < 0.05). Identical outcomes were found for noise texture (f Noise magnitude and detectability of chest lesions were better with PCCT than with the DSCT. PCCT may offer great potential for dose reduction in patients undergoing chest CT examinations.

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Copyright © 2024 Associazione Italiana di Fisica Medica e Sanitaria. Published by Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Sebastian Faby, Cédric Croisille and Julien Erath are both employees of Siemens Healthineers. None of the other authors have any relevant conflicts of interest or industry support for the project to declare.