Quantifying Metal Artefact Reduction using Virtual Monochromatic Dual-Layer Detector Spectral CT Imaging in Unilateral and Bilateral Total Hip Prostheses

Quantifying Metal Artefact Reduction using Virtual Monochromatic Dual-Layer Detector Spectral CT Imaging in Unilateral and Bilateral Total Hip Prostheses

Highlights • Dual-layer detector CT reduces metal artefacts at high monochromatic energies (keV). • 130 keV images were optimal based on quantitative analysis on CNRs. • Optimal keVs varied from 74–150 keV for different hip prostheses configurations. • The Titanium alloy resulted in less severe arte...

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Veröffentlicht in:European journal of radiology 2017-03, Vol.88, p.61-70
Hauptverfasser: Wellenberg, R.H.H, Boomsma, M.F, van Osch, J.A.C, Vlassenbroek, A, Milles, J, Edens, M.A, Streekstra, G.J, Slump, C.H, Maas, M
Format: Artikel
Sprache:eng
Schlagworte:
Dual-layer detector
Hip prostheses
Hip Prosthesis
Humans
Metal artefacts
Metals
Phantoms, Imaging
Radiographic Image Interpretation, Computer-Assisted - methods
Radiology
Signal-To-Noise Ratio
Spectral CT
Titanium
Tomography, X-Ray Computed - methods
Virtual monochromatic
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Beschreibung
Zusammenfassung:Highlights • Dual-layer detector CT reduces metal artefacts at high monochromatic energies (keV). • 130 keV images were optimal based on quantitative analysis on CNRs. • Optimal keVs varied from 74–150 keV for different hip prostheses configurations. • The Titanium alloy resulted in less severe artefacts compared to the Cobalt alloy. • Severe metal artefacts, caused by extensive photon-starvation, were not reduced
ISSN:0720-048X
1872-7727
DOI:10.1016/j.ejrad.2017.01.002