Table 3.

Summary of harmonisation algorithms evaluated.

Algorithm name	Additional preprocessing	Training domain	Core method	Algorithm details
SHNet	Brain extraction	SH	Deep learning	qDL inspired network, anatomically constrained training
SHResNet	Brain extraction	SH	Deep learning	Residual structure network, anatomically constrained training
SphericalNet	Brain extraction	SH	Deep learning	Local Spherical Convolution Network, anatomically constrained training
FCSNet	Brain extraction	SH	Deep learning	Fully convolutional network with task-dependent regularization (L2 and L1)
SDL		Over-complete data-driven dictionaries	Adaptive dictionary learning	Linear mapping between over-complete dictionaries