# Cornerstone3D

Cornerstone is a set of JavaScript libraries that can be used to build web-based medical imaging applications. It provides a framework to build radiology applications such as the OHIF Viewer.

Repository: https://github.com/cornerstonejs/cornerstone3D
Canonical: https://ross.abutalabs.com/products/cornerstone3d
Homepage: https://cornerstonejs.org
Language: TypeScript
License: MIT
License Family: permissive
Topics: javascript, nci-itcr, cornerstone, medical-imaging, segmentation
Last push: 2026-09-02T19:49:57+00:00
Link (homepage): https://cornerstonejs.org
Link (site_page): https://www.cornerstonejs.org/docs/getting-started/overview
Link (site_page): https://www.cornerstonejs.org/docs/examples
Link (site_page): https://www.cornerstonejs.org/docs/api/core
Link (site_page): https://www.cornerstonejs.org/docs/api/tools

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 100, release rhythm 88, longevity 100
- inputs: {"age_days": 1626, "days_push": 0, "days_rel": 0, "gap_med": 0, "n_releases_24m": 558}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1133, forks 517 (observed 2026-09-03T02:15:10.220272+00:00)

## What it is
Cornerstone Core is a lightweight JavaScript library for displaying medical images in modern web browsers using the HTML5 canvas element. It is a foundational component of the Cornerstone.js medical imaging platform, designed to be combined with image loaders and tools to build larger applications like the OHIF Viewer.

## Use cases
- display DICOM medical images in a web browser
- build a radiology or medical imaging web viewer
- render medical image stacks on HTML5 canvas
- integrate medical image display into a larger web application
- load and view medical images from custom or proprietary formats
- build a PACS study viewer for the web

## When to choose
- you need a minimal, unopinionated core for rendering medical images in the browser
- you want full control over image loading, transport, and interaction paradigms
- you are maintaining or extending an existing legacy Cornerstone-based application

## When to avoid
- you are starting a new medical imaging project - use Cornerstone3D instead, as this repository is deprecated
- you need GPU-accelerated volume rendering, segmentation, or modern tooling out of the box
- you want a complete turnkey medical imaging application rather than a component library

## Facets
- artifact type: library
- maturity: maintenance
- function: image-processing, ui-components, graphics
- domain: healthcare, web-development, frontend, image-processing
- platform: browser
- tags: medical-imaging, dicom, html5-canvas, deprecated, radiology, cornerstone3d, image-viewer, javascript, web-server

## Member repositories
- cornerstonejs/cornerstone3D (main) score 96
- cornerstonejs/cornerstone (mirror) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:10.220272+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:53:52.225939+00:00, confidence not recorded.
  - readme: https://github.com/cornerstonejs/cornerstone3D (fetched 2026-09-03T02:15:10.220272+00:00, sha 27590eab4e7f)
  - homepage: https://cornerstonejs.org (fetched 2026-08-29T10:34:43.937780+00:00, sha e45c8ddc25ba)
  - site_page: https://www.cornerstonejs.org/docs/getting-started/overview (fetched 2026-08-29T10:34:43.946942+00:00, sha 672174226518)
  - site_page: https://www.cornerstonejs.org/docs/examples (fetched 2026-08-29T10:34:43.949038+00:00, sha eab945d4bbb4)
  - site_page: https://www.cornerstonejs.org/docs/api/core (fetched 2026-08-29T10:34:43.951502+00:00, sha 5c2935a24556)
  - site_page: https://www.cornerstonejs.org/docs/api/tools (fetched 2026-08-29T10:34:43.953084+00:00, sha 465f13d56eec)
  - site_page: https://www.cornerstonejs.org/docs/api/dicomImageLoader (fetched 2026-08-29T10:34:43.955092+00:00, sha 1a76c7dc54eb)
  - site_page: https://www.cornerstonejs.org/docs/api/nifti-volume-loader (fetched 2026-08-29T10:34:43.956686+00:00, sha 5adcb7564c5b)
  - site_page: https://www.cornerstonejs.org/docs/api/adapters (fetched 2026-08-29T10:34:43.958186+00:00, sha d842a5eb0529)
  - site_page: https://www.cornerstonejs.org/docs/migration-guides/5x (fetched 2026-08-29T10:34:43.959953+00:00, sha 35bd56c18b8c)
- Data as of 2026-08-30T08:39:29.467469+00:00.