VRT can eliminate false shadow of fixation screw, clearly display full aperture of screw orbit and hence supply important imaging evidence for post-operative evaluation of screw fixation of axis fractures.

• VRT成像能消除内固定螺钉伪影,清晰显示螺钉轨道全径,可为枢椎骨折螺钉内固定术后疗效评价提供重要的影像学依据。