Problems with RDSR Eurocolumbus C-arm

[rossan...@gmail.com]

Goodmorning everyone.
openrem is ok with all RDSRs of our hospital except those coming from a c-arm machine of a local manufacturer (i can read those RDSR with DoseUtility software, but it generates only a text file).
Can I send someone the file to understand what the problem may be?

Thank you

Rossana

[Ed McDonagh]

Hi Rossana - please send it through to me and I'll take a look.

If my email address isn't visible from this message, reply and I'll contact you off list.

Kind regards,

Ed

[rossan...@gmail.com]

Hi Ed,
your address is not visible, mine is rossan...@hotmail.com
thanks

rossana

[Ed McDonagh]

Dear Rossana

Thank you for sending the file through to me.

The first problem is that the file is marked as having a character set encoding of ISO 2022 IR 144 - Cyrillic (although I haven't spottend any Cyrillic in the file), which unfortunately isn't listed (in that form) in the released version of pydicom, which OpenREM relies on. It is fixed in the current development version of pydicom, but that hasn't been released yet. I can tell you how to fix that in your local install, but there is another problem too...

For each event, the pulse width, kV and mA has been recorded as a multiple value, one for each pulse. I've not seen this before, but looking at the standard it is completely legal. The OpenREM database is set up to cater for this, but the import routine, display and export isn't!

I have created a new issue of this on bitbucket: https://bitbucket.org/openrem/openrem/issues/584/fluoro-pulse-width-kv-current-and-exposure

Ed

[Ed McDonagh]

The per-pulse kV/mA/pulse width is now handled in OpenREM, with details of how it is dealt with for exports documented within the fluoroscopy export docs. This will be available in the 0.8.0 release.

The issue with encoding will ultimately be fixed when pynetdicom3 is released and OpenREM is modified to work with pynetdicom3 and the recently released pydicom.

In the meantime, you can now modify the existing pydicom to handle a wider range of character set encodings by following the documentation provided.

I would very much welcome comment on this documentation (and all the documentation) either here or on bitbucket.org/openrem/openrem/issues.

Kind regards

Ed

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