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Scientific paper - Original scientific paper
The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study
Diagnostics, 15 (2025), 2; 180. https://doi.org/10.3390/diagnostics15020180
Šegota Ritoša, Doris; Dodig, Doris; Kovačić, Slavica; Bartolović, Nina; Brumini, Ivan; Valković Zujić, Petra; Jurković, Slaven; Miletić, Damir

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Šegota Ritoša, D., Dodig, D., Kovačić, S., Bartolović, N., Brumini, I., Valković Zujić, P. ... Miletić, D. (2025). The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study. Diagnostics, 15. (2). doi: 10.3390/diagnostics15020180

Šegota Ritoša, Doris, et al. "The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study." Diagnostics, vol. 15, no. 2, 2025. https://doi.org/10.3390/diagnostics15020180

Šegota Ritoša, Doris, Doris Dodig, Slavica Kovačić, Nina Bartolović, Ivan Brumini, Petra Valković Zujić, Slaven Jurković and Damir Miletić. "The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study." Diagnostics 15, no. 2 (2025). https://doi.org/10.3390/diagnostics15020180

Šegota Ritoša, D., et al. (2025) 'The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study', Diagnostics, 15(2). doi: 10.3390/diagnostics15020180

Šegota Ritoša D, Dodig D, Kovačić S, Bartolović N, Brumini I, Valković Zujić P, and sur.. The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study. Diagnostics [Internet]. 2025 January 14 [cited 2025 January 16];15(2). doi: 10.3390/diagnostics15020180

D. Šegota Ritoša, et al., "The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study", Diagnostics, vol. 15, no. 2, January 2025. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:184:740973. [Accessed: 16 January 2025]

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Metadata
Title (english)The Impact of Weighting Factors on Dual-Energy Computed Tomography Image Quality in Non-Contrast Head Examinations: Phantom and Patient Study
AuthorDoris Šegota Ritoša
AuthorDoris Dodig
AuthorSlavica Kovačić
AuthorNina Bartolović
AuthorIvan Brumini
AuthorPetra Valković Zujić
AuthorSlaven Jurković
AuthorDamir Miletić
Author's institutionUniversity of Rijeka
Faculty of Medicine
(Department of Medical Physics and Biophysics)
Author's institutionUniversity of Rijeka
Faculty of Medicine
(Department of Radiology)
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Clinical Medical Sciences
Radiology
Abstract (english)
Background: This study aims to evaluate the impact of various weighting factors (WFs) on the quality of weighted average (WA) dual-energy computed tomography (DECT) non-contrast brain images and to determine the optimal WF value. Because they simulate standard CT images, 0.4-WA reconstructions are routinely used. Methods: In the initial phase of the research, quantitative and qualitative analyses of WA DECT images of an anthropomorphic head phantom, utilizing WFs ranging from 0 to 1 in 0.1 increments, were conducted. Based on the phantom study findings, WFs of 0.4, 0.6, and 0.8 were chosen for patient analyses, which were identically carried out on 85 patients who underwent non-contrast head DECT. Three radiologists performed subjective phantom and patient analyses. Results: Quantitative phantom image analysis revealed the best gray-to-white matter contrast-to-noise ratio (CNR) at the highest WFs and minimal noise artifacts at the lowest WF values. However, the WA reconstructions were deemed non-diagnostic by all three readers. Two readers found 0.6-WA patient reconstructions significantly superior to 0.4-WA images (p < 0.001), while reader 1 found them to be equally good (p = 0.871). All readers agreed that 0.8-WA images exhibited the lowest image quality. Conclusions: In conclusion, 0.6-WA reconstructions demonstrated superior image quality over 0.4-WA and are recommended for routine non-contrast brain DECT.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleDiagnostics
Numberingvol. 15, no. 2, 180
e-ISSN2075-4418
DOIhttps://doi.org/10.3390/diagnostics15020180
URN:NBNurn:nbn:hr:184:740973
Publication2025-01-14
Document URLhttps://www.mdpi.com/2075-4418/15/2/180
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Created on2025-01-16 09:03:24