Image quality of 3rd generation spiral cranial dual-source CT in combination with an advanced model iterative reconstruction technique

• Verfasst von: Wenz, Holger [VerfasserIn]
• Verfasst von: Maros, Máté E. [VerfasserIn]
• Verfasst von: Meyer, Mathias [VerfasserIn]
• Verfasst von: Förster, Alex [VerfasserIn]
• Verfasst von: Haubenreisser, Holger [VerfasserIn]
• Verfasst von: Kurth, Stefan [VerfasserIn]
• Verfasst von: Schönberg, Stefan [VerfasserIn]
• Verfasst von: Groden, Christoph [VerfasserIn]
• Verfasst von: Scharf, Johann [VerfasserIn]
• Verfasst von: Henzler, Thomas [VerfasserIn]
• Titel: Image quality of 3rd generation spiral cranial dual-source CT in combination with an advanced model iterative reconstruction technique
• Titelzusatz: a prospective intra-individual comparison study to standard sequential cranial CT using identical radiation dose
• Verf.angabe: Holger Wenz, Máté E. Maros, Mathias Meyer, Alex Förster, Holger Haubenreisser, Stefan Kurth, Stefan O. Schoenberg, Thomas Flohr, Christianne Leidecker, Christoph Groden, Johann Scharf, Thomas Henzler
• E-Jahr: 2015
• Jahr: August 19, 2015
• Umfang: 14 S.
• Fussnoten: Gesehen am 21.02.2018
• Titel Quelle: Enthalten in: PLOS ONE
• Ort Quelle: San Francisco, California, US : PLOS, 2006
• Jahr Quelle: 2015
• Band/Heft Quelle: 10(2015,8) Artikel-Nummer e0136054, 14 Seiten
• ISSN Quelle: 1932-6203
• DOI: doi:10.1371/journal.pone.0136054
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Hemorrhage
• Sach-SW: Central nervous system
• Sach-SW: Computed axial tomography
• Sach-SW: Image processing
• Sach-SW: Imaging techniques
• Sach-SW: Neuroimaging
• Sach-SW: Signal to noise ratio
• Sach-SW: Visual impairments
• K10plus-PPN: 1570050554

Abstract

Objectives: To prospectively intra-individually compare image quality of a 3rd generation Dual-Source-CT (DSCT) spiral cranial CT (cCT) to a sequential 4-slice Multi-Slice-CT (MSCT) while maintaining identical intra-individual radiation dose levels. Methods: 35 patients, who had a non-contrast enhanced sequential cCT examination on a 4-slice MDCT within the past 12 months, underwent a spiral cCT scan on a 3rd generation DSCT. CTDIvol identical to initial 4-slice MDCT was applied. Data was reconstructed using filtered backward projection (FBP) and 3rd-generation iterative reconstruction (IR) algorithm at 5 different IR strength levels. Two neuroradiologists independently evaluated subjective image quality using a 4-point Likert-scale and objective image quality was assessed in white matter and nucleus caudatus with signal-to-noise ratios (SNR) being subsequently calculated. Results: Subjective image quality of all spiral cCT datasets was rated significantly higher compared to the 4-slice MDCT sequential acquisitions (p<0.05). Mean SNR was significantly higher in all spiral compared to sequential cCT datasets with mean SNR improvement of 61.65% (p*Bonferroni0.05<0.0024). Subjective image quality improved with increasing IR levels. Conclusion: Combination of 3rd-generation DSCT spiral cCT with an advanced model IR technique significantly improves subjective and objective image quality compared to a standard sequential cCT acquisition acquired at identical dose levels.