[Rtk-users] Digital Breast Tomosynthesis - Iterative reconstruction

[Simon Rit]

Can you explain why I get an error that you don't get? Did you write your
own c++ software or did you use rtkfdk?
I think it would be interesting for everyone if you could share this.
Thanks,
Simon

On Thu, Jun 11, 2015 at 3:22 PM, Padraig Looney <padraig.looney at gmail.com>
wrote:

> Thanks for looking into this.
>
> Yes. We can use the back projection filters fine. Although, we have yet to
> modify the ramp filters to suit our usecase.
>
>
>
> On Thu, Jun 11, 2015 at 2:12 PM, Simon Rit <simon.rit at creatis.insa-lyon.fr
> > wrote:
>
>> Hi,
>> I have received your data and run the attached test. I also get the error
>> "Description: itk::ERROR: Cannot account for too large detector
>> displacements, a part of space must be covered by all projections."
>> wtih rtkfdk. Did you use rtkfdk for testing FDK? Your email suggested
>> that it worked for FDK but it doesn't work for me...
>> Given your geometry, this is the expected behavior. If you still want to
>> try the iterative reconstruction, you'll have to shunt the displaced
>> detector filter in the pipelines using the documentation, see for example this
>> image <http://www.openrtk.org/Doxygen/dot_inline_dotgraph_20.png> for
>> sart.
>> Simon
>>
>> PS: maybe we will consider changing the error to a simple warning and
>> doing nothing in such cases, I'll discuss it with the local iterative pope
>>
>> On Wed, Jun 10, 2015 at 1:40 PM, Simon Rit <
>> simon.rit at creatis.insa-lyon.fr> wrote:
>>
>>> Hi,
>>> Can you send the mhd header and the geometry file to reproduce the bug?
>>> You don't have to send the data, we should be able to simulate it.
>>> Thanks,
>>> Simon
>>>
>>> On Wed, Jun 10, 2015 at 1:35 PM, Padraig Looney <
>>> padraig.looney at gmail.com> wrote:
>>>
>>>> Dear All,
>>>>
>>>>
>>>> In my group we have been using RTK for digital breast tomosynthesis. We
>>>> have successfully used the back projection FDK algorithms to reconstruct
>>>> our stack of planes. I have been trying to use the SART filter instead to
>>>> compare. The geometry has remained the same as for the case of the back
>>>> projection but I now get an ITK error at runtime
>>>>
>>>> itk::ERROR: Cannot account for detector displacement larger than 50% of
>>>> panel size. Corner inf=-0 and corner sup=-163.422
>>>>
>>>> Any help would be appreciated.
>>>>
>>>> Thanks
>>>> Pádraig
>>>>
>>>> _______________________________________________
>>>> Rtk-users mailing list
>>>> Rtk-users at public.kitware.com
>>>> http://public.kitware.com/mailman/listinfo/rtk-users
>>>>
>>>>
>>>
>>
>
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