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Status: Bibliographieeintrag

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Verfasst von:Sawall, Stefan [VerfasserIn]   i
 Baader, E. [VerfasserIn]   i
 Wolf, J. [VerfasserIn]   i
 Maier, J. [VerfasserIn]   i
 Schlemmer, Heinz-Peter [VerfasserIn]   i
 Schönberg, Stefan [VerfasserIn]   i
 Sechopoulos, I. [VerfasserIn]   i
 Kachelrieß, Marc [VerfasserIn]   i
Titel:Image quality of opportunistic breast examinations in photon-counting computed tomography
Titelzusatz:a phantom study
Verf.angabe:S. Sawall, E. Baader, J. Wolf, J. Maier, H.-P. Schlemmer, S.O. Schönberg, I. Sechopoulos, M. Kachelrieß
E-Jahr:2024
Jahr:June 2024
Umfang:7 S.
Fussnoten:Online verfügbar: 25. Mai 2024 ; Gesehen am 25.11.2024
Titel Quelle:Enthalten in: Physica medica
Ort Quelle:Amsterdam : Elsevier, 1996
Jahr Quelle:2024
Band/Heft Quelle:122(2024) vom: Juni, Artikel-ID 103378, Seite 1-7
ISSN Quelle:1724-191X
Abstract:Purpose - To compare the breast imaging performance of a clinical whole-body photon-counting CT (PCCT) to that of a dedicated breast CT (BCT) to determine the image quality of opportunistic breast examinations in clinical PCCT. - Materials and methods - To quantify image quality for breast cancer applications, acquisitions of a breast phantom including representations of calcifications, fibers, and masses were performed using a clinical PCCT and a dedicated BCT. When imaging with the PCCT, the phantom was also combined with a thorax phantom to simulate realistic patient positioning, while only the breast phantom was imaged in the BCT. Images in BCT were acquired at 7.0 mGy (CTDI16cm) and using 2.6 mGy-25.0 mGy in the PCCT. Spatial resolution between the BCT and PCCT images was matched and data were reconstructed using the default methods of each system. The dose-normalized contrast-to-noise ratio (CNRD) of masses and the structural visibility of fibers and calcifications were evaluated as figures of merit for all reconstructions. - Results - CNRD between masses and background was 0.56 mGy-½, on average with BCT and varied between 0.39 mGy-½ to 1.46 mGy-½ with PCCT over all dose levels, phantom configurations, and reconstruction algorithms. Calcifications down to a size of 0.29 mm and fibers down to a size of 0.23 mm could be reliably identified in the images of both systems. - Conclusions - Clinical PCCT provides an image quality superior to that obtained with BCT in terms of CNRD and allows for the identification of calcifications and fibers at comparable dose levels.
DOI:doi:10.1016/j.ejmp.2024.103378
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.1016/j.ejmp.2024.103378
 kostenfrei: Volltext: https://www.sciencedirect.com/science/article/pii/S112017972400173X
 DOI: https://doi.org/10.1016/j.ejmp.2024.103378
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Computed Tomography
 Dosage
 Imaging
 Phantom
 Radiation
 X-Ray
K10plus-PPN:1909453692
Verknüpfungen:→ Zeitschrift

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