[Influence of sequence type on the extent of the susceptibility artifact in MRI--a shoulder specimen study after suture anchor repair].

摘要: Purpose: To compare the extent of susceptibility artifacts after metallic suture anchor implantation by analyzing 14 different MRI sequences. Materials and Methods: A was implanted in central area three glenoid porcine specimens. The specimens were imaged with a 1.5 T scanner using protocol standard sequences including gradient echo, spin echo turbo without fat-saturation. Artifact size measured for each specimen sequence. resulting mean artifact areas determined type sequence values compared. Results: Gradient echo-sequences produced significantly larger than sequences, whereby 3D-gradient smaller 2D-gradient high readout band width short effective time showed best results. For conventional sequence, reduction did not decrease size. Spectral fat-saturation affect compared to non-saturated Conclusion: should be used repair. Turbo performed width. increase significantly.