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IDProjectCategoryView StatusLast Update
0004005Slicer4Module MultiVolume Exporter/Importerpublic2015-11-30 17:49
Reporterlbarazzetti Assigned Tofedorov  
PrioritynormalSeveritymajorReproducibilityalways
Status resolvedResolutionnot fixable 
Product VersionSlicer 4.4.0 
Target VersionFixed in Version 
Summary0004005: Slice position is wrong in case of missing slices in Dicom Series
Description

To reproduce:

  • create a new folder
  • copy three non-consecutive dicom slices (in my case: slice 1, 12, 139)
  • import with the dicom importer / with data loader deselecting "single file"

The volume loaded in Slicer is formed by equidistant slices - even if the dicom files are not equidistant (see screenshot attached). Also the bounding box is wrong (it seems to be just computed from the spacing between the first two slices and the number of slices). No warning or error is issued, in the log there is only a INFO message:

E:/Work/slicer_dicomstack/substack/CTCHEST0001.dcm.dcmE:/Work/slicer_dicomstack/substack/CTCHEST0012.dcm.dcmE:/Work/slicer_dicomstack/substack/CTCHEST0139.dcm.dcmGeometric issues were found with 1 of the series. Please use caution.
MultiVolumeImportPlugin::examine
DICOMMultiVolumePlugin found 0 multivolumes!
MultiVolumeImportPlugin:examineMultiseries
DICOMMultiVolumePlugin found 0 multivolumes!

TagsNo tags attached.

Activities

2015-06-17 06:17

 

equidistantslices.PNG (112,655 bytes)
equidistantslices.PNG (112,655 bytes)
fedorov

fedorov

2015-06-17 11:35

developer   ~0013132

As far as I understand, this is expected behavior for non-equidistant slices. They cannot form a valid image volume, which must be equidistant, at least in the ITK/Slicer world.

If you want to load non-equidistant slices, you should load them one at a time using "Add data" dialog and checking "Single file" checkbox. Each slice will be treated as a separate volume.

As aside, this issue is completely unrelated to MultiVolumeImporter. The messages you included in your report are just informational. This type of data is not handled by this module.

lbarazzetti

lbarazzetti

2015-06-18 00:12

reporter   ~0013135

I see, thanks. With further trying I discovered that by clicking "advanced" and "examine" in the dicom browser a warning is actually issued (it's just a bit hidden).

Issue History

Date Modified Username Field Change
2015-06-17 06:17 lbarazzetti New Issue
2015-06-17 06:17 lbarazzetti Status new => assigned
2015-06-17 06:17 lbarazzetti Assigned To => fedorov
2015-06-17 06:17 lbarazzetti File Added: equidistantslices.PNG
2015-06-17 11:35 fedorov Note Added: 0013132
2015-06-17 11:35 fedorov Status assigned => resolved
2015-06-17 11:35 fedorov Resolution open => not fixable
2015-06-18 00:12 lbarazzetti Note Added: 0013135
2015-11-30 17:49 jcfr Category Module MultiVolumeImporter => Module: MultiVolume Exporter/Importer