NIfTI images from t1-linear are saved as float64

[SimonaBottani]

Outputs of the pipeline t1-linear are saved as float64, which is heavier than saving them using uint8
(as done by SPM pipeline t1-volume)

Information is available in the header of the DICOM in the field datatype

[ghisvail]

Which raises the following question: in which precision do we want our NifTi stored in the end? Aka, the file size vs dynamic range dilemma.

[ghisvail]

Back in my PhD days, we were using short integers (int16 / uint16). I don't know the rationales for this choice at the time.

[ghisvail]

As discussed with @nburgos, short integers should be enough for storing MRI and PET modalities with a reasonable dynamic range.

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[github-actions]

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This issue is considered stale because it has not received further activity for the last 14 days. You may remove the inactive label or add a comment, otherwise it will be closed after the next 14 days.

[github-actions]

This issue is considered stale because it has not received further activity for the last 14 days. You may remove the inactive label or add a comment, otherwise it will be closed after the next 14 days.

[github-actions]

This issue is considered stale because it has not received further activity for the last 14 days. You may remove the inactive label or add a comment, otherwise it will be closed after the next 14 days.

[github-actions]

This issue is considered stale because it has not received further activity for the last 14 days. You may remove the inactive label or add a comment, otherwise it will be closed after the next 14 days.