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Hello OHIF community!

We are thrilled to share some fantastic news that you have all been eagerly waiting for. Today we announce the official releases of OHIF v3 and Cornerstone3D 1.0, the addition of significant OHIF feature improvements including radiotherapy structure sets,  and five more years of funding from the National Cancer Institute! Let’s dive in!

Official OHIF v3 release to Main branch

The official release of OHIF v3 to the main branch marks an important milestone for the project. OHIF v3 has now reached feature parity with v2, but is built on top of a much more extensible and powerful framework. Now that we have released v3, we will focus on driving community adoption, helping users on v2 with migration to v3, and assisting the community to develop new extensions and modes. If you have a project using OHIF v2, please refer to our Migration Guides and join our weekly Office Hours, or ask questions on the Community Forum if you’re having trouble. You can also join our Slack community to connect with other medical imaging enthusiasts.

See Migration Guides

Funding and Roadmap Update

Since its inception in 2015, OHIF has grown to become one of the most trusted web-based medical imaging viewer technologies in the world. Our impact now reaches into the tens of thousands with unique users in over 160 countries.

We are excited to continue this growth with the announcement that OHIF has secured funding from the National Cancer Institute’s Informatics Technology for Cancer Research (ITCR) program to support the project for the next 5 years. This generous funding will enable us to continue our work on enhancing the software and expanding support for broader feature capabilities. We would like to extend our deepest thanks to the ITCR program officers for their invaluable assistance navigating the funding process and to everyone who contributed letters of support for our project to help us secure this crucial funding. 

Set-Aside Funding: A key aspect of the ITCR program is Set-Aside Funding, which is dedicated to supporting collaborative activities that advance the integration, adoption, and interoperability of ITCR-supported technologies. If you have a use case or complementary technology and are interested in potentially becoming a partner in Years 2-5 of our project, please contact James Hanks (

Here is how the roadmap looks for the next year:
See Roadmap
Let’s have a quick look at the new features:

DICOM Radiotherapy Structure Sets

Recognizing the growing importance of segmentation in the current era of medical imaging, we have updated the DICOM RTSTRUCT rendering pipeline to better integrate with other segmentation types, such as label maps. This enhances segmentation handling in OHIF and sets the stage for future contour and label map conversion capabilities.
Try it out!
Slide Microscopy

We have updated the slide microscopy code using the latest technologies from the DICOM Microscopy Library and SLIM Viewer. This ensures better performance, compatibility, and annotation capabilities for digital pathology.
Try it out!
DICOM Uploader

We also added a new DICOM Uploader feature in OHIF. This addition empowers users to easily upload DICOM files directly from the viewer to their PACS systems over DICOMWeb. The DICOM Uploader currently supports all DICOM files, including multiframe images.
Cornerstone DICOM Image Loader Migrated to TypeScript

We have transitioned from the CornerstoneWADOImageLoader to the new TypeScript-based DICOM Image Loader library. This updated codebase sets the stage for future advancements such as ECMAscript module builds and a centralized Web Worker manager. The migration process should be relatively simple; refer to this pull request for more information. Check this Github Issue to understand our overall plan and see how you can help. In addition, we will be moving the entire OHIF framework to TypeScript over the next few months in order to make it easier to understand and debug.
Cornerstone3D 1.0 Release

We are excited to share that Cornerstone3D has reached version 1.0. This milestone indicates its readiness for production use, offering a stable and reliable option for medical imaging projects going forward. Read the Documentation and See the Examples.
Coming Soon: Transfer Function Editor for Volume Rendering

In our mission to broaden our volume rendering capabilities, significant strides have been made in the transfer function editor UI, as showcased in the deploy preview below. This editor is an advanced version of the prototype created by Dr. Anna Frühstück supervised by Dr. Steve Pieper. We are grateful for their contribution to the open-source community that has aided our progress.
Try it out!

Share Your Project on the OHIF Website

We have unveiled a new section on our website, showcasing projects and products developed using OHIF or Cornerstone libraries. This initiative aims to highlight diverse applications and inspire innovation in the community.

Join us in celebrating these accomplishments by sharing your OHIF experiences. If you'd like to feature your project, please click on the link below to fill out our survey.

Get featured on OHIF website
Notable Contributions 

We want to extend our gratitude to the following organizations for their valuable contributions to our open-source projects:
  • The New Lantern team contributed to add statistics into the PlanarFreehandROI tool (PR#326)
  • Gradient Health contributed the addition of specifying the initial displayed area to the viewport (PR#280)
  • The team improved the stability of the Cornerstone3D Crosshairs tool as well as the performance of the segmentation visibility toggle, especially in large volumes. (PR#552, PR#551, PR#556)
  • Pistevo Decision and Gradient Health supported a new feature to allow OHIF to dynamically set the configuration at runtime (PR#3391)
In Case You Missed It 
  • Run Meta's Segment Anything on the NCI Imaging Data Commons using a Browser Bookmarklet.
  • We got an enthusiastic shout-out in one of the episodes of the carestaq podcast from the team. Thank you!
  • The 39th NA-MIC project week will be held June 12-16, 2023 in Montreal, Canada, you can learn more here.
  • NCI Imaging Data Commons data is now hosted in the AWS Open Data Registry.

Closing Note & Reminder

OHIF Office Hours are held every week online on Thursdays at 10 a.m. Eastern Time. This is a great opportunity for community members to work directly with the core team on their OHIF related projects. You can find information on how to join here

We appreciate your continued support of OHIF! Thank you for reading this newsletter, and stay tuned for more exciting updates in the near future!

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