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. 2012 Jan 31;39(2):933–950. doi: 10.1118/1.3673773

Table IV.

The terms and weights used in the objective function during each stage of model fitting.

Term Description Fitting phase 1: 10 basis functions, leaflets fitted separately Fitting phase 2: 40 basis functions, leaflets fitted separately Fitting phase 3: 70 basis functions, leaflets fitted separately Fitting phase 4: 70 basis functions, leaflets fitted simultaneously
Tlikelihood Volume overlap 1 1 1 1
Tvalidity1 Boundary Jacobian constraint 10−2 10−2 10−2 10−2
Tvalidity2 Radial thickness constraint 10−4 10−4 10−4 10−4
Tvalidity3 Boundary mR constraint 10−1 10−1 10−1 10−1
Tvalidity4 Loop tangent constraint 10−2 10−2 10−2 10−2
Tvalidity5 Leaflet intersection constraint 10−1 10−1 10−1 10−1
Tregularity1 Medial triangle regularizer 0 10 30 30
Tregularity2 Boundary triangle regularizer 0 10 30 30