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| Verfasst von: | Sawall, Stefan [VerfasserIn]  |
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| | Baader, E. [VerfasserIn] |
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| | Wolf, J. [VerfasserIn] |
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| | Maier, J. [VerfasserIn] |
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| | Schlemmer, Heinz-Peter [VerfasserIn] |
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| | Schönberg, Stefan [VerfasserIn] |
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| | Sechopoulos, I. [VerfasserIn] |
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| | Kachelrieß, Marc [VerfasserIn] |
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| Titel: | Image quality of opportunistic breast examinations in photon-counting computed tomography |
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| Titelzusatz: | a phantom study |
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| Verf.angabe: | S. Sawall, E. Baader, J. Wolf, J. Maier, H.-P. Schlemmer, S.O. Schönberg, I. Sechopoulos, M. Kachelrieß |
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| E-Jahr: | 2024 |
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| Jahr: | June 2024 |
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| Umfang: | 7 S. |
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| Fussnoten: | Online verfügbar: 25. Mai 2024 ; Gesehen am 25.11.2024 |
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| Titel Quelle: | Enthalten in: Physica medica |
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| Ort Quelle: | Amsterdam : Elsevier, 1996 |
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| Jahr Quelle: | 2024 |
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| Band/Heft Quelle: | 122(2024) vom: Juni, Artikel-ID 103378, Seite 1-7 |
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| ISSN Quelle: | 1724-191X |
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| 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. |
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| DOI: | doi:10.1016/j.ejmp.2024.103378 |
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| 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 |
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| | kostenfrei: Volltext: https://www.sciencedirect.com/science/article/pii/S112017972400173X |
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| | DOI: https://doi.org/10.1016/j.ejmp.2024.103378 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Computed Tomography |
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| | Dosage |
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| | Imaging |
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| | Phantom |
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| | Radiation |
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| | X-Ray |
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| K10plus-PPN: | 1909453692 |
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| Verknüpfungen: | → Zeitschrift |
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Image quality of opportunistic breast examinations in photon-counting computed tomography / Sawall, Stefan [VerfasserIn]; June 2024 (Online-Ressource)
