DICOM supplement 145 inquiry

[David Gutman]

Mathieu-- agreed.  My experience in the DICOM world with radiology images
is that converting from some format to DICOM is extremely extremely
challenging as you point out, which is likely even worse for the whole
slide images.  Although as Yves points out, it's somewhat of a chicken and
egg issue if there are no files already available for someone to try and
develop a library against, nor any vendor that can generate files in the
proper format.


While it sounds like it would be extremely resource intensive to get a
legacy format-->DICOM sup145 converter developed, but would be extremely
interesting.

Is the expectation that the vendors themselves would be developing the
libraries / functionality so images can be saved directly as a DICOM WSI
image?  And are any vendors working on that?

Having spent several years dealing with various oddities of vendor specific
formats, it would be interesting to know what the timeline (if any) of that
functionality being developed.




On Sat, Mar 16, 2013 at 10:44 AM, Mathieu Malaterre <
mathieu.malaterre at gmail.com> wrote:

> Hi David,
>
> On Sat, Mar 16, 2013 at 2:48 PM, David Gutman <dagutman at gmail.com> wrote:
> > Yves-- I am familiar at least at some high level with the Dicom
> standard--
> > although as you point out it's a standard without a way to read or write
> > images, and no images to even test on!
>
> It's 'DICOM' uppercase, as any other acronym
>
> > I am not sure how well the standard maps to the OMETIFF format-- but that
> > would likely be the easiest way to go.  I routinely convert images I scan
> > on either an Aperio machine or an Olympus Nanozoomer into "just a
> tiff"....
> > so presumably we could generate a tiff and then "reformat" it so that it
> > meets the DICOM standard, including adding all of the necessary metadata.
> > I don't have much experience with the library directly (I hate editing
> > Java)... but since it's open source, and the properties and data model
> are
> > fairly well developed, it would be a template to hack onto the current
> OMERO
> > XML model and make it DICOM friendly...
>
> As explained by Yves, Sup 145 clearly specify all of that. Going to
> OME-TIFF as an intermediate steps, will only make the work actually
> even harder.
> Finally some slides do not have the complete image at full resolution,
> so you cannot simply 'drop' the intermediate levels, again Sup 145
> specify that.
>
> 2cts
> --
> Mathieu
>



-- 
David A Gutman, M.D. Ph.D.
Assistant Professor of Biomedical Informatics
Senior Research Scientist, Center for Comprehensive Informatics
Emory University School of Medicine
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