vtkDICOMImageReader function SetFileNames is not working?

Support
1

So I have stumbled on example of vtkResliceCursor which uses a vtkDICOMImageReader function SetDirectoryName for generating output. And I have a set of DICOM Files.

reader = vtkDICOMImageReader();
reader.SetDirectoryName("CT");
reader.Update();
imageDims = reader.GetOutput().GetDimensions();

But it is kinda not very flexible (like if you put multiple series in one directory, it will not work). So I tried to make a workaround, with using function SetFileNames, except it is absolutely not working for me.

reader = vtkDICOMImageReader();
files_path = [sop_instance.path_prefix for sop_instance in series] #generates X:\X\1.dcm 2.dcm and etc
array = vtkStringArray()
for file_path in files_path:
    array.InsertNextValue(file_path)
reader.SetFilesName(array);
reader.Update();
imageDims = reader.GetOutput().GetDimensions();

except its not working. Just getting empty window
So my basic question what am I doing wrong? Is vtkDICOMImageReader is a good way of generating volume (model) for reslice cursor? I think about other workaround, although its kinda lame (generating folder, putting there all .dcm files of one series)

2

The vtkDICOMImageReader doesn’t support the use of SetFileNames(). I looked at the code, and it has this:

void vtkDICOMImageReader::ExecuteInformation()
{
  if (this->FileName == nullptr && this->DirectoryName == nullptr)
  {
    return;
  }
 ...
}

SetFileName() and SetDirectoryName() are the only methods for providing data.

I have my own DICOM reader at github.com/dgobbi/vtk-dicom, and it supports the SetFileNames() method, but it must be built from source (there is no package for pip).