TABLE V:

Quantitative performance evaluation of the proposed method trained with different communication frequencies $T\times E.T$ is the number of communication rounds and $E$ is the number of local training epochs. The best results are marked in bold.

$\text{Communication frequency}\mathit{T}\times \mathit{E}$	In-federation		Out-of-federation
	DSC $\left[\mathbf{\%}\right]$	ASD $\left[\mathbf{m}\mathbf{m}\right]$	DSC $\left[\mathbf{\%}\right]$	ASD $\left[\mathbf{m}\mathbf{m}\right]$
$25\times 16$	90.63	1.78	83.10	3.47
$50\times 8$	90.64	1.92	83.45	2.95
$100\times 4$	90.72	1.89	83.58	2.98
$200\times 2$	90.95	1.57	83.81	3.27
$400\times 1$	91.14	1.40	84.33	2.71