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Table 1 Comparison of the quality of the images obtained with the three protocols

From: Imaging the implant-soft tissue interactions in total knee arthroplasty

  Evaluation (0 = worst, 5 = best)
MRI embalmed CT embalmed CT fresh-frozen
Mean Range Mean Range Mean Range
Bone visualization
 Distinction of bone from soft tissues 2 1 to 3 3 2 to 5 4 3 to 5
 Distinction cortical bone from cancellous bone 3 2 to 4 4 2 to 5 5 5
 Similarity to conventional medical images 3 2 to 4 4 2 to 5 5 5
Prosthetic imaging
 Distinction of bone from implant material 1 0 to 2 4 3 to 5 4 4
 Distinction of soft tissues from implant material 1 0 to 2 2 1 to 3 4 4
Soft tissue visualization
 Visibility of soft tissues along their entire length 3 1 to 4 3 2 to 5 3 2 to 4
 Scattering/distortion 2 1 to 3 3 2 to 5 4 4
Range of motion
 Possibility to image the knee at all flexion angles 2 0 to 3 5 5 5 5
 Mirroring/superposition 0 0 5 5 5 5
3D reconstructions
 Visibility of the entire knee 0 0 5 5 5 5
Total score 12   31   35