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Corresponded threshold values between slice and frame displacements on the EM-Tracking data set. The most widely used threshold on FD is in the range of [0.2,0.6]mm. The corresponding threshold on SD on this data set was between 1.33 mm and 1.87 mm, from high to low. It suggested that VVR-LM was unaware of a moved slice in a volume with FD = 0.2 mm unless this slice displaced at least 1.33 mm.
