[Rtk-users] Question regarding RTK

[Simon Rit]

Dear Wen,
I don't mind, that's why the project is open source! I think raw
images are already available via itk, you just have to create a mhd
header that points to that raw file. Look here for more information:
http://www.itk.org/Wiki/ITK/File_Formats. However, if there is some
information in a header or a joint file, you may want to do specific
I/O objects for Siemens. This is explained on the ITK documentation.
In my experience, it's hard to obtain information from constructor and
you have to guess or measure it yourself. In some cases, you even want
to do better than the constructor. However, the more information you
can get from them, the better. For example, I know I do something
close to the constructor for Elekta but I don't know how good is my
Varian stuff. I get the geometry from their files, it's usually simple
to understand. We may be able to help you if you can provide a sample
acquisition.
Discussions for RTK are done via the mailing list (cc), you can
suscribe on the website. There is also a wiki (click on help). There
are examples you can use there and some data are available on the RTK
midas community.
I hope this helps. Let me know if I can do more,
Simon

On Sat, Feb 2, 2013 at 5:45 AM, Wen Liu <wen.p.liu at jhu.edu> wrote:
> Hi Simon,
>
> I hope you don't mind a random email regarding RTK. I'm a CS PhD student at
> Johns Hopkins working on integrating CBCT with medical robotics. We have a
> Siemen's C-arm system that provides raw (16 bit unsigned short) images that
> I wish to process and reconstruction using RTK. I've noticed your authorship
> on several classes (rtkImageXxxx, rtkVarianxxx, etc) which process platform
> specific outputs into projections/attuentation images that RTK can
> reconstruct. What would you recommend as my next steps? Port in raw images
> to RTK? Consult with Siemen's regarding their calibration data to map raw to
> attenuation? Is this typically done with lookup tables, i.e. based on
> geometric and calibration?
>
> Also if there are literature, discussion groups for RTK and these topics,
> please point me in the right direction!
>
> Thanks very much for your time and help.
>
> Regards,
> Wen
>
> https://www.lcsr.jhu.edu/User:Wliu25