VRT could clearly display full aperture of screw orbit, location of screw and angle of fixation and hence was superior to X-ray plain film and MPR.
VRT成像能清晰显示螺钉轨道全径、螺钉位置及固定角度，并优于X 线片及MPR成像。
VRT could clearly display full aperture of screw orbit, location of screw and angle of fixation and hence was superior to X-ray plain film and MPR.
VRT成像能清晰显示螺钉轨道全径、螺钉位置及固定角度，并优于X 线片及MPR成像。
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