[IGSTK-Users] Problem reading DICOM CT images

[Torleif Sandnes]

Hi.
Thanks for your replies.

> E000102Mod is a test dataset generated to test the DICOM image  
> reader capability to detect invalid
> dicom series.  If you carefully look at the dataset, this dataset  
> contains dicom images from different series.

Ok, then we got that sorted out at least. I should probably have  
checked to see how the series were used in the tests.

> 1)  Problem during the actual process in reading the data.   
> Exceptions thrown by
>     the ITK image reader are caught and bundled into IGSTK image  
> reader error..

This is the one.

> 2) Gantry tilt

The Gantry_DetectorTilt for the series I'm trying to load is 0.

> 3) Dicom image data has to be read by the correct DICOM image
>     reader derived class
> This means if you try to read MRI image using CTImageReader, it  
> will fail.

I am absolutely certain that I am reading a CT image using a  
CTImageReader.

I have debugged the DICOMImageReader::AttemptReadImageProcessing()  
and found that an exception is thrown from the statement  
m_ImageSeriesReader->Update(). The exceptions description is

"itk::ERROR: ImageSeriesReader(0x20215b00): At least two filenames  
are required."

This is true, since printing the size and content of  
m_ImageSeriesReader's FileNamesContainer yields:

"Printing 1 filenames..
/Users/tosa/Desktop/06251514/17550735.dcm"

However, stepping through DICOMImageReader::RequestSetDirectory(), I  
see that the test for
directoryClass.GetNumberOfFiles() < 4 fails, (i.e. the directory  
contains at least two dcm files).

Going back to DICOMImageReader::ReadDirectoryFileNamesProcessing(), I  
see that only two UIDS are returned from m_FileNames-GetSeriesUIDs()  
and only one file returned from  m_FileNames->GetInputFileNames().  
The directory contains 283 dicom files.

Regards,
Torleif