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Description

This dataset contains DICOM-SEG (DSO) conversions of the  Segmentation Labels and Radiomic Features for the Pre-operative Scans of the TCGA-LGG collection  and  Segmentation Labels and Radiomic Features for the Pre-operative Scans of the TCGA-GBM collection  analysis datasets.
 
The MR volumes and segmentations provided in the original segmentation datasets (T1 pre-contrast, T1 post-contrast, T2, FLAIR) are in NIfTI format, co-registered to an atlas space, and re-sampled to 1mm isotropic resolution. This dataset contains DICOM-SEG versions of the same segmentations, transformed back into the original patient resolutions and orientations found in the TCIA’s  TCGA-GBM  and  TCGA-LGG  datasets. This allows users to extract features from MR sequences without introducing interpolation artifacts from isotropic resampling.
 
The process for creating these DSO objects is as follows. Patient data from the original NIfTI datasets were registered and resampled from isotropic space to patient space and resolution using  3DSlicer’s BRAINSFit module . The affine transformation files from these registrations are used to register and resample both the semi-automatic and automatic NIfTI segmentations into the spaces of each original MR DICOM dataset. These transformed NIfTI segmentations are then converted into DICOM-SEG datasets using the software package  dcmqi . Because each MR sequence has a unique patient space and resolution, the resulting dataset contains four DSO segmentations for each original NIfTI segmentation.

Included in this dataset are the converted DSO volumes, DSO metadata values used in the DSO conversion program dcmqi, and affine transformation files from isotropic space to the original patient space saved in ITK format. Original patient DICOM volumes are also available for download below. A key is provided that maps individual DSO objects to their corresponding DICOM Series UID, to facilitate easier data analysis.
 

Data Access

Click the Download  button to save a ".tcia" manifest file to your computer, which you must open with the  NBIA Data Retriever

Data TypeDownload all or Query/Filter
TCGA-LGG images - 65 subjects (DICOM, 17 GB)
TCGA-GBM images - 102 subjects (DICOM, 32 GB)
Segmentations -  (DICOM, 4 GB)
DCMQI Metadata (ZIP, 3.1 MB)

TCGA key mapping (CSV)

Please contact help@cancerimagingarchive.net  with any questions regarding usage.

Collections Used in this Third Party Analysis
Below is a list of the Collections used in these analyses:

Detailed Description

CollectionStatistics

Number of Studies

168*

Number of Series

1304

Number of Patients

167

Number of Images

1304

Modalities

Seg

Image Size (GB)4

*For TCGA-GBM patient TCGA-06-0192, there were 2 studies.

Citations & Data Usage Policy 

Users of this data must abide by the TCIA Data Usage Policy and the Creative Commons Attribution 3.0 Unported License under which it has been published. Attribution should include references to the following citations:

Data Citation

Beers, A., Gerstner, E., Rosen, B., Clunie, D., Pieper, S., Fedorov, A., & Kalpathy-Cramer, J. (2018). DICOM-SEG Conversions for TCGA-LGG and TCGA-GBM Segmentation Datasets [Data set]. The Cancer Imaging Archive. https://doi.org/10.7937/TCIA.2018.ow6ce3ml

TCIA Citation

Clark, K., Vendt, B., Smith, K., Freymann, J., Kirby, J., Koppel, P., Moore, S., Phillips, S., Maffitt, D., Pringle, M., Tarbox, L., & Prior, F. (2013). The Cancer Imaging Archive (TCIA): Maintaining and Operating a Public Information Repository. Journal of Digital Imaging, 26(6), 1045–1057. https://doi.org/10.1007/s10278-013-9622-7

In addition to the dataset citation above, please be sure to cite the following if you utilize these data in your research:

Publication Citation

Bakas, S., Akbari, H., Sotiras, A., Bilello, M., Rozycki, M., Kirby, J. S., Freymann, J. B., Farahani, K., & Davatzikos, C. (2017). Advancing The Cancer Genome Atlas glioma MRI collections with expert segmentation labels and radiomic features. Scientific Data, 4(1). https://doi.org/10.1038/sdata.2017.117 https://www.nature.com/articles/sdata2017117

Data Citation

Bakas, S., Akbari, H., Sotiras, A., Bilello, M., Rozycki, M., Kirby, J., Freymann, J., Farahani, K., & Davatzikos, C. (2017). Segmentation Labels for the Pre-operative Scans of the TCGA-LGG collection [Data set]. The Cancer Imaging Archive. https://doi.org/10.7937/K9/TCIA.2017.GJQ7R0EF

Data Citation

Bakas, S., Akbari, H., Sotiras, A., Bilello, M., Rozycki, M., Kirby, J., Freymann, J., Farahani, K., & Davatzikos, C. (2017). Segmentation Labels for the Pre-operative Scans of the TCGA-GBM collection [Data set]. The Cancer Imaging Archive. https://doi.org/10.7937/K9/TCIA.2017.KLXWJJ1Q

Other Publications Using This Data

TCIA maintains a list of publications that leverage TCIA data. If you have a manuscript you'd like to add please contact the TCIA Helpdesk.

Version 1 (Current): 2020/04/30

Data TypeDownload all or Query/Filter
TCGA-LGG images - 65 subjects (DICOM, 17 GB)
TCGA-GBM images - 102 subjects (DICOM, 32 GB)
Segmentations -  (DICOM, 4 GB)
DCMQI Metadata (ZIP, 3.1 MB)

TCGA key mapping (CSV)

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