Unknown manufacturer: Hyperfine Inc

[emilljungberg]

I'm converting some DICOM data acquired on the Hyperfine Swoop (64 mT portable MRI scanner). When I execute dcm2niix I get the warning message that the manufacturer is unknown and that it is assuming Philips instead.

To produce this error I executed

dcm2niix -o ./ hyperfine_dicoms

and the output I get is

Chris Rorden's dcm2niiX version v1.0.20220720  Clang13.1.6 ARM (64-bit MacOS)
Found 1 DICOM file(s)
Warning: Found 0018,9087 but manufacturer (0008,0070) unknown: assuming Philips.
...

I've tried compiling the development branch and I get the same warning.

If I look at the header of the Hyperfine DICOM files, the manufacturer tag is listed as:

(0008,0070) ?? (LO) [Hyperfine Research]                          # 18,1 Manufacturer

It is not a major problem, but the .json sidecar will list the manufacturer erroneously as Philips.

Is it possible to add Hyperfine Inc as a known manufacturer?

And of course, thanks for making this great piece of software!

[neurolabusc]

This simply reflects the fact the I have never seen a Hyperfine DICOM. dcm2niix attempts to identify manufacturer specific private tags to populate the BIDS fields. In general, most newer and smaller manufacturers tend to create simpler DICOMs that rely more on public DICOM tags not private tags. However, details like slice timing, phase encoding polarity and diffusion gradient direction are often not provided. If you can provide sample datasets with my institutional email I would be happy to help. It is exciting to see companies like Hyperfine and MR Solutions filling exciting new niches.

[neurolabusc]

Closing: unable to validate support for a manufactuer without concrete exemplars. Hopefully DICOM public tags are sufficient for most modalities.