Overcoming metallic artefacts from orthopaedic wrist volar plating on a low-field MRI scanner
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To quantitatively compare the artefact reduction between standard and metallic artefact reduction (MAR) fast spin echo (FSE) T2 sequences in a low-field magnetic resonance imaging (MRI) scanner (0.3 T) in patients with titanium volar wrist plating.
Materials and methods
Sixteen patients with fractures of the distal radius, treated with titanium volar wrist plating and screws, were examined using a dedicated 0.3 T MRI scanner. Coronal standard FSE T2, FSE T2 high bandwidth (HiBW) and FSE T2 view angle tilting (VAT) sequences were performed. Metallic artefact volume, consisting of both “black” and “bright” artefacts, was calculated for each sequence. Quantitative differences were compared using repeated measures ANOVA test (P < 0.05).
FSE T2 HiBW and FSE T2 VAT showed a significant reduction in artefact volume compared to the standard sequence. Differences between the artefact volume of the standard FSE T2, HiBW and VAT sequences were statistically significant for both the “black” and “bright” artefacts (P < 0.0001). Differences between the 1.5 HiBW and VAT sequences were statistically significant (black P < 0.0001, bright P < 0.0302).
MAR sequences significantly reduced metallic artefacts in vivo using a 0.3 T MRI scanner.
KeywordsPlating MRI Wrist Artefacts MAR
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
- 12.American Orthopaedics Classification of wrist fractures. https://www2.aofoundation.org/wps/portal/surgeryshowPage=diagnosis&bone=Radius&segment=Distal. Accessed 23 April 2016
- 15.Altman DG (1991) Practical statistics for medical research. Chapman and Hall, LondonGoogle Scholar