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Hello OHIF community!
We're excited to bring you another round of updates and enhancements in OHIF Viewer. This release not only brings new updates to the OHIF viewer, but also a major overhaul of Cornerstone. With the Cornerstone 2.0 update, the underlying libraries have been improved to allow greater flexibility and performance for a wide range of imaging tasks. Let’s jump into the details!
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While Cornerstone3D 1.0 served us well, sometimes breaking changes are essential to unlock powerful new possibilities. With the release of Cornerstone3D 2.0, we’re setting the stage for a more innovative and efficient approach to medical imaging. This update brings powerful new capabilities for handling complex imaging data and enhances compatibility with modern development tools to support future growth.
- Viewport-Centric Segmentation: Segmentations are now integral data structures, allowing detailed control and multi-viewport configuration.
- VoxelManager for Data Efficiency: We’ve improved how volumes are managed, cutting memory usage in half. Our updated library now handles volumes more efficiently, delivering better performance and accessibility.
- Modernized Architecture: With TypeScript and ES module support, Cornerstone3D 2.0 integrates seamlessly with frameworks like Vite, React, and Vue.
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10 Year Anniversary of OHIF
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This month marks a very special anniversary of OHIF, as it has been 10 years since the creation of the project. OHIF began as a needs-driven project to create a web based medical imaging viewer that could be flexibly implemented to support the imaging assessment component of clinical research protocols at Dana Farber Harvard Cancer Center. Following an initial 5 year grant from the National Cancer Institute's Informatics Technology for Cancer Research (ITCR) program, the project grew as the need for a lightweight DICOM viewer that could be easily customized for a broad range of workflows became apparent in the imaging community.
Over the years, OHIF has received further sustainment funding from the NCI ITCR program, Chan Zuckerberg Initiative, and generous public and private partners. Thanks to this vital support, we are proud today to be in a position to continue our core mission of providing open access advanced medical imaging visualization framework to communities around the world.
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Segmentation Available in 2D and 3D Views
OHIF Viewer 3.9 introduces advanced segmentation tools with Cornerstone 3D 2.0 integration, bringing powerful 2D and 3D segmentation across diverse imaging types, including ultrasound, mammography, and X-rays. Users can now render and edit Labelmaps directly in non-volume data and visualize these as surfaces in the 3D viewport. Additionally, by eliminating the need for viewport conversion before segmentation, OHIF 3.9 enables faster segmentation creation and hydration, streamlining workflows and improving performance.
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Video Viewport with Annotation Support
With this update, our video viewport now offers a consistent, powerful toolset across video and other viewports, making it easier than ever to perform in-depth analysis on video data. Looking forward, we’re excited to expand our video capabilities further by bringing advanced contouring and labelmap segmentation to video. This will enable users to define and visualize regions of interest frame-by-frame, unlocking new potential in time-based imaging analysis.
Are you interested in collaborating with us to accelerate the release of these advanced segmentation features? Whether you have resources to contribute, we’d love to connect! Reach out to discuss how we can make it happen faster together.
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Slide Microscopy with Cornerstone Tools
We’re excited to share an experimental release of our new whole-slide imaging (WSI) viewport, now fully integrated with Cornerstone3D. Previously, OHIF used an external viewport for WSI, but now with the DICOM Microscopy Viewer library embedded directly into Cornerstone3D, you can seamlessly view microscopy images side by side with other Cornerstone viewports for a more cohesive analysis experience. Special thanks to the Imaging Data Commons team for maintaining this essential library. We invite you to try and explore this enhanced setup—let us know what you think!
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New Study Browser and Panels Updates
As part of our ongoing UI overhaul to support modern web based imaging needs, we have significantly reworked our Study Browser, Measurement, and Segmentation panels. These panels now feature a more modern, compact layout with options for collapsing and sorting, making it easier to manage extensive studies. By unifying the panel structure, the updated design also facilitates future mobile and tablet support, enhancing portability.
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@ohif/ui-next Component Library
To enhance stability, accelerate development cycles, and improve accessibility, the OHIF Viewer is transitioning its core components to a new library, @ohif/ui-next, built using shadcn/ui. We started by redesigning key components such as Button, Slider, and Notification, each with a custom styling that aligns the OHIF aesthetic. Additionally, we’ve focused heavily on making these components themeable, enabling you to bring your own themes and enjoy improved customization options. As the migration progresses, these components will serve as flexible building blocks to OHIF Viewer's responsive redesign (mobile, tablets, desktop, and multi-monitor support).
Explore our new interactive Component Library to see the updated components in action, access guidelines, and view resources like our Figma Design Kit.
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Additional UI/UX Enhancements
React 18
The OHIF Viewer now runs on the latest React 18, utilizing advanced features like concurrent rendering for higher performance and smoother interactions. These optimizations bring noticeable speed improvements, ensuring a more responsive user experience even under high loads. Developers can check out our React migration guides to learn more about upgrading projects and accessing these enhancements.
Interactive Onboarding
We’re excited to introduce a new interactive onboarding experience in OHIF Viewer, designed to guide users through everything with ease. This onboarding system enables step-by-step, customizable tours that walk users through essential workflows, providing in-context instructions for each tool and interface element. Perfect for new users or teams needing a quick refresher, these tours allow you to configure steps, triggering events, and in-app guidance to fit your specific use cases—creating a seamless and intuitive introduction to OHIF Viewer.
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Other Viewer Updates
Parametric Maps
Now, parametric maps can be overlaid on top of the primary images, providing a rich visualization of AI-driven insights such as probability and prediction maps. Customization options include color mapping, opacity control, and an integrated color legend to make interpreting parametric overlays seamless. Check out this sample study showcasing this feature.
On-Premise Deployment & Authentication
We’ve streamlined on-premise deployments and improved security by adding OAuth and Keycloak integration recipes. Detailed setup videos guide you through configuring Keycloak, NGINX, and connecting with PACS systems like Orthanc for robust, secure deployments.
Study Prefetcher
We now support automatic preloading of the next series to reduce loading times and improve workflow efficiency. Customizable settings allow users to manage the number of preloaded display sets and control the order of loading.
Web Worker Integration
We’ve integrated Cornerstone 3D’s Web Worker Manager into OHIF, enabling you to offload intensive tasks without impacting UI performance. Enjoy smooth background processing with a clean loading UI to track progress and completion, ensuring a faster and more responsive experience.
Expanded Test Coverage
We’re committed to quality with significant improvements to our test coverage, now offering comprehensive end-to-end tests that double previous coverage levels, ensuring robust stability and reliable performance.
Enhanced Stability for RTSTRUCT Rendering
RTSTRUCT viewports are now rendered directly in stack viewports, significantly enhancing initial rendering speed and addressing edge case stability issues. This improvement ensures smoother, faster rendering and improved accuracy, including support for rendering points as well.
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Updated OHIF Viewer Roadmap
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Notable Contributions
- Flywheel - Provided a Cornerstone tool to help sculpt and edit freehand ROIs. (See PR)
- Sjors Gielen, for the University of Nottingham - Provided support in fixing Cornerstone3D 2.0 build issues in different frameworks.
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In Case You Missed It
The OHIF team prepared an abstract and poster session for the NIH/NCI Informatics Technology for Cancer Research annual meeting held in September. Dr. Gordon Harris was invited to speak at a panel showcasing the latest advances in polymorph segmentation on the OHIF platform. View the presentation slides here.
Martin Bellehumeur presented their development 'Integrated Reporting and Conferencing with FHIRCast' at SIIM Hackathon 2024, which featured the OHIF viewer. View the video.
Quantitative Imaging for Personalized Cancer Medicine, developed by the Techna Institute, a UHN research institute affiliated with the University of Toronto, presented their OHIF-based solution at the Ontario Institute for Cancer Research Imaging Open House 2024. View the video.
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Join Us: OHIF Office Hours - Remember, our OHIF Office Hours are held every Thursday at 10 a.m. Eastern Time. This is a fantastic opportunity to engage directly with the core team and discuss your projects or challenges.
Connect on LinkedIn - Get the latest updates from our new LinkedIn page.
We value your continued support and are excited to see what we can achieve together in the coming months. Thank you for being an essential part of the OHIF community!
Warm regards,
OHIF Team
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