The interobserver-validated relevance of intervertebral spacer materials in MRI artifacting

摘要: Intervertebral spacers for anterior spine fusion are made of different materials, such as titanium, carbon or cobalt-chrome, which can affect the post-fusion MRI scans. Implant-related susceptibility artifacts decrease quality scans, thwarting proper evaluation. This cadaver study aimed to demonstrate extent that implant-related artifacting affects evaluation intervertebral spacers. In a cadaveric porcine spine, we evaluated post-implantation scans three differed in shape, material, surface qualities and implantation technique. A spacer human cortical bone was used control. The median sagittal slice divided into 12 regions interest (ROI). No significant differences were found on 15 sequences read independently by an interobserver-validated team specialists (P>0.05). Artifact-affected image rated score 0-1-2. maximum 24 points (100%) possible. Turbo spin echo produced best scores all Only control achieved 100%. carbon, titanium cobalt-chrome scored 83.3, 62.5 50%, respectively. Our scoring system allowed us create ranking scan reference independent artifact dimensions. had lowest percentage artifacts. Even with turbo sequences, metallic showed high degree variability. Despite optimum sequencing, implant design material relevant factors artifacting.