Currently the result of the 3D Threshold using a 4D image with a dynamic mask (4D mask) is:
| Plugin name | dynamic t = 0 | dynamic t = 2
| Theshold | {icon bug} performs segmentation on all timesteps | {icon bug} performs segmentation on all timesteps
But the result of the 3D Threshold using a 4D image with a dynamic mask (4D mask) should be:
| Plugin name | dynamic t = 0 | dynamic t = 2
| Theshold | {icon check} performs segmentation on timestep 0 | {icon check} performs segmentation on timestep 2
We decided for this to be the default (see T27509).
Later (on request) an option can be added so that the dynamic threshold can be set to compute the threshold for all timesteps in parallel.