National Cancer Institute
NCI Imaging Data Commons
Slim is the slide microscopy viewer of the NCI Imaging Data Commons, a cloud-based environment of publicly available cancer imaging data.
- slide microscopy series
- 76,000+
- pathology segmentations
- 27,000+
- bulk annotation series
- 7,000+
The NCI Imaging Data Commons (IDC) is a node of the NCI Cancer Research Data Commons. It hosts radiology, digital pathology and multiplexed fluorescence images, together with image-derived data such as segmentations and annotations, all in DICOM and free to access without registration.
Every slide microscopy series in IDC opens in Slim. The IDC viewer serves data from the Google Cloud Healthcare API, and the public IDC proxy exposes the same data over DICOMweb, which is what the live examples on this site use.
Why DICOM matters here
IDC collects data from many sources: TCGA, CPTAC, HTAN, and AI analysis results contributed by research groups. Keeping all of it in one standard means one viewer works for everything. Bulk nuclei annotations, AI segmentations and multiplexed immunofluorescence open in Slim the same way as an H&E slide.
The IDC team maintains Slim and dicom-microscopy-viewer, and new data types in IDC drive new features in the viewer.
Explore the data
Use the IDC portal to browse collections, or try the live examples below. Each one opens a public IDC study in Slim.
Open the data in Slim
VL Whole Slide Microscopy Image
Cyclic immunofluorescence (t-CyCIF), multiplexed channels(opens in the demo)
HTAN-HMSOpen in Slim
Microscopy Bulk Simple Annotations
AI nuclei outlines as Microscopy Bulk Simple Annotations(opens in the demo)
507,871 polygon annotations (Nuclei)
TCGA-READOpen in Slim
Segmentation
AI nuclei segmentation, binary DICOM SEG(opens in the demo)
Pan-Cancer-Nuclei-Seg: Nucleus
TCGA-CESCOpen in Slim