Influence of spectral shaping and tube voltage modulation in ultralow-dose computed tomography of the abdomen.

"Declarations Ethics approval and consent to participateThe anatomical institute of our university received general approval from the local ethics committee to use the cadaveric specimens that are donated to them for study and research purposes. For the present study, additional specific permission was obtained from the institutional review board of the University of Würzburg, Germany (approval number 20210623 01). The need for written informed consent was waived, since body donors had volunteered their corpses for scientific and educational purposes during their lifetime. Medical history and sociodemographic data of body donors were not accessible for our study; therefore all image material was anonymized before analysis. All procedures were carried out in accordance with the ethical standards of the institutional and national research committee and with the 1975 Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThree authors (J.-P.G, A.S.K., T.A.B.) have received speaker honoraria from Siemens Healthineers unrelated to the present investigation within the last three years. The other authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article. Competing interests Three authors (J.-P.G, A.S.K., T.A.B.) have received speaker honoraria from Siemens Healthineers unrelated to the present investigation within the last three years. The other authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article."

"Funding J.-P.G. was funded by the Interdisciplinary Center of Clinical Research Würzburg, Germany [grant number Z-3BC/02]. This publication was further supported by the Open Access Publication Fund of the University of Würzburg. The Department of Diagnostic and Interventional Radiology at University Hospital Würzburg receives continuous research support by Siemens Healthineers. Of note, the funding bodies played no role in the design of the study and collection, analysis, interpretation of data, and in writing the manuscript. Open Access funding enabled and organized by Projekt DEAL."