Fig. 3From: Is vertebral rotation correction maintained after thoracoscopic anterior scoliosis surgery? A low-dose computed tomography studyTrue axial images of vertebral endplates were segmented using the ImageJ software to produce binary images that could be processed by the rotation symmetry algorithm. a. True axial image. b. True axial image with polygonal outline of vertebral endplate. c. Binary image of vertebral endplate. The bright white circle in images A and B is a transverse section of the titanium rodBack to article page