[Rtk-users] Short scan reconstruction problem - real projection images from Elekta XVI

[Simon Rit]

I wonder why it compiles on Linux... but anyway, sorry, it's been fixed.

On Wed, Sep 10, 2014 at 10:39 AM, Rune Slot Thing <Rune.Slot.Thing at rsyd.dk>
wrote:

>  Hi Simon,
>
>
>
> I asked our IT-guy to recompile the new commit, but unfortunately he was
> unsuccessful. Here is what he writes:
>
>
>
> I've downloaded the master from git today and compiled in the VS 2008 pro
> 64bit on Win7 with itk 4.3.0 and fftw.
>
>
>
> The new fix does not compile because of issues on line 92-99 in
> rtkParkerShortScanImageFilter.txx
>
>
>
> error C2678: binary '==' : no operator found which takes a left-hand
> operand of type 'std::_Tree<_Traits>::const_iterator' (or there is no
> acceptable conversion)
>
>
>
> and on line 73
>
>
>
> error C2923: 'itk::Vector' :
> 'rtk::DaubechiesWaveletsConvolutionImageFilter<TImage>::Pass' is not a
> valid template type argument for parameter 'T'
> f:\programmering\cxx\lib\rtk\master-2014-09-10\code\rtkDaubechiesWaveletsConvolutionImageFilter.h
> 73                        rtkadmmwavelets
>
>  Is it a typo with to identical lines (LINE 93 = 94)?
>
>
>
> Thanks again for your prompt help.
>
>
>
> Best regards,
>
> Rune
>
>
>
> Rune Slot Thing
>
> PhD Student
>
> Institute of Clinical Research, University of Southern Denmark
>
> Laboratory of Radiation Physics, Odense University Hospital
>
> rune.slot.thing at rsyd.dk
>
>
>
>
>
> *Fra:* simon.rit at gmail.com [mailto:simon.rit at gmail.com] *På vegne af *Simon
> Rit
> *Sendt:* 9. september 2014 14:41
> *Til:* Rune Slot Thing
> *Cc:* Yang Kyun Park; rtk-users at public.kitware.com
>
> *Emne:* Re: [Rtk-users] Short scan reconstruction problem - real
> projection images from Elekta XVI
>
>
>
> Thank you Rune, this was very helpful. The pattern is that several
> projections have the same gantry angle on one side of the gantry angle gap.
> Something that happens with Elekta Synergy... I think that the bug has been
> fixed:
>
> https://github.com/SimonRit/RTK/commit/c5b1647eee34ca6fb76d067ff2f5c67f7477495f
>
>
>
> On Tue, Sep 9, 2014 at 12:04 PM, Rune Slot Thing <Rune.Slot.Thing at rsyd.dk>
> wrote:
>
> Hi all,
>
>
>
> We have experienced the same problem as YangKyun in our institution. Find
> attached a screendump of a short scan, and the ElektaGeometry file. We are
> reconstructing on CPU using RTK 1.0.0, and have encountered the strange
> behavior a couple of times without being able to find any patterns. Our
> images are 512x512 pixels of 0.8 mm pitch, and acquired in a 200 degree
> scan with the S20 filter on an Elekta XVI machine.
>
>
>
> Hope this helps in tracking down the problem.
>
>
>
>
>
> Best regards,
>
>
>
> Rune Slot Thing
>
> PhD Student
>
> Institute of Clinical Research, University of Southern Denmark
>
> Laboratory of Radiation Physics, Odense University Hospital
>
> rune.slot.thing at rsyd.dk
>
>
>
>
>
> *Fra:* Rtk-users [mailto:rtk-users-bounces at public.kitware.com] *På vegne
> af *Simon Rit
> *Sendt:* 9. september 2014 07:24
> *Til:* Yang Kyun Park
> *Cc:* rtk-users at public.kitware.com
> *Emne:* Re: [Rtk-users] Short scan reconstruction problem - real
> projection images from Elekta XVI
>
>
>
> Hi,
>
> Everything looks correct in what you did. What version of RTK did you use?
> It looks like a bug in the angular weighting of the projections coming
> from the discretization of the integral on the gantry angle. Could you send
> us a copy of ElektaGeometry.xml and tell us what was the dimension of the
> projections? We will look into it.
> Thanks for the report,
> Simon
>
>
>
> On Tue, Sep 9, 2014 at 5:22 AM, Yang Kyun Park <theday79 at gmail.com> wrote:
>
> Hi all,
>
>
>
> I’ve been using RTK for a year and I appreciate for all the efforts being
> made by the developers.
>
>
>
> Even though I haven’t had any problem with full scan images (360 degree
> scan), I found that rtkfdk doesn’t work well with my short scan images
> obtained from our Elekta XVI system.
>
>
>
> I’ve used a command line such as:
>
> --geometry ElektaGeometry.xml --path his_file_dir --regexp ".*.his"
> --output rtkfdk_short_scan.mha --spacing 0.5,0.5,0.5 --dimension
> 512,200,512 --origin -127.9,29.5,-127.9 --hardware cuda
>
>
>
> The reconstructed image looked very weird, like a distorted 3D volume with
> very noisy patterns (as attached).
>
>
>
> Note that I didn’t change anything in the rtkfdk code and I believe that
> the software is automatically recognize the short scan when it is loading
> the geometry file(xml). (Please correct me if I was wrong.)
>
>
>
> Thank you for your help in advance.
>
>
>
> YangKyun
>
>
>
>
>
>
>
>
>
>
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