Skip to main content
. 2021 Feb 18;2:613608. doi: 10.3389/fdgth.2020.613608

Table 2.

Parameters used in this study for rigid registration (RR) and B-Spline non-rigid registration methods implemented in 3D Slicer.

Parameter Value Description
RR B-spline
Cost metric MMI MMI Mattes mutual information
Interpolation mode Linear Linear
Sampling percentage 5% 5% Percentage of image voxels sampled for MMI
Histogram bins 100 100 Number of histogram levels
Optimizer type VR3DT LBFGSB
Max number of iterations 1,500 1,500 Maximum number of iterations for optimizer
Grid size 15 × 15 × 15 Number of subdivisions of the B-Spline Grid
Min step length 10−3 10−3 Min threshold step for optimizer
Projected gradient tolerance - 10−5 Used by LBFGSB

MMI, Mattes Mutual Information; VR3DT, Versor Rigid 3D Transform; LBFGSB, Limited memory Broyden Fletcher Goldfarb Shannon minimization with Simple Bounds.