Fig. 2From: Tumor motion changes in stereotactic body radiotherapy for liver tumors: an evaluation based on four-dimensional cone-beam computed tomography and fiducial markersCorrelation between liver tumor motion measured by planning simulation 4D-CBCT and mean liver tumor motion measured by pre-SBRT 4D-CBCT during five fraction treatments in the a left-right (LR), b anterior-posterior (AP), and c superior-inferior (SI) directionsBack to article page