rordenlab/dcm2niix v1.0.20260416 on GitHub

Breaking changes

PET BIDS sidecars overhauled (issue #983). Multiple field changes affect downstream PET pipelines:
- TimeZero is no longer emitted; the raw SeriesTime is emitted instead — let downstream tools pick their own time-zero convention.
- AcquisitionTime is suppressed in PET sidecars.
- InjectionStart is no longer emitted (RadiopharmaceuticalStartTime is dose-measurement time on Siemens, not injection time).
- FrameTimesStart for static scans now computed from AcquisitionTime − SeriesTime instead of hardcoded [0] (PR #1010).
Filename format split: %v restored as full vendor name; %h/%H now control hazardous BIDS hierarchical naming (%h = no reproin, %H = reproin). See FILENAMING.md.

Zstandard output: -z s writes .nii.zst (issue #1005). Build with -DUSE_ZSTD=ON.
PET BIDS field expansion: TracerName, AttenuationCorrection, AttenuationCorrectionMethod, ReconMethodName, DoseCalibrationFactor, ScatterFraction, radiopharmaceutical metadata, etc.
-i o option for output image scaling override (issue #894).

UIH MOSAIC: always prefer private (0065,1037) for diffusion gradients regardless of tag order (issue #993).
UIH: SliceTiming units corrected; Issue870 warning unified (issue #1007).
Canon DWI: corrected bvec orientation.
GE DTI (Coronal + ROW): corrected bvec signs (PR #970).
Philips R11: InversionTime (issue #968).
Siemens XA50: cine image support (issue #947).
Enhanced DICOM with varying PixelSpacing now rejected (issue #1009).
Multi-echo enhanced DICOM uses EffectiveTE (PR #988).
SEG (segment drawings): nearest-neighbor resampling.
CT interpolation and affine sanitization improvements (issue #945).
Recover fields previously dropped by empty (0400,0561) OriginalAttributesSequence (issue #989).