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Hello OHIF community!

We're excited to bring you another round of updates and enhancements in OHIF Viewer. In this edition, we spotlight the latest version release (v3.8) which includes new advanced features that continue to push the boundaries of medical imaging technology on the web. We also announce our upcoming collaboration with eContour, and spotlight some of our amazing ongoing community developments. Let's dive in!

New Enhanced Layout Menu

Customize your viewing experience with the powerful new enhanced layout selector tool. Easily switch between preconfigured advanced layouts like "MPR", "3D four up", and more. With just a click, seamlessly transition between standard grids and advanced 3D layouts or introduce your own custom views into the toolbar for quick access. This flexible new tool streamlines your workflow and provides an environment perfectly suited for efficient imaging analysis. Try it here.

Watch full video

Streamlined Visualization with Per-Viewport Controls

Elevate your image analysis with our enhanced per-viewport rendering controls in OHIF Viewer v3.8.

Get instant access to relevant window level presets tailored to each viewport's data type - whether CT, MRI, 3D Rendering, or more. This intuitive design simplifies your workflow, especially when working with multi-modality fusion viewports.

Plus, refine your reading experience with our new color lookup table selector, featuring in-viewport previews and a clear color bar to visualize value ranges. Take control of your imaging data like never before. Try it here.

Watch full video
Simplify Complex Analysis with Workflow Steps

Break down intricate tasks into clear, manageable stages with OHIF Viewer v3.8's innovative Workflow Steps. Tailor the interface to display only the essential tools and view settings, and user interface needed for each step, and experience a more focused and guided workflow. Try it here.
4D Visualization

Experience comprehensive 4D support across the OHIF Viewer with our newly improved CINE player for smooth navigation of dynamic imaging data. 

This feature is especially beneficial for viewing time-series data, where you can easily adjust the frame rate, play direction, and loop mode to suit your needs, all while maintaining a high level of performance. 

We've introduced a new 4D PET/CT mode, leveraging the latest Workflow Steps. This innovative mode combines 3D CT and 4D PET data in a 9-viewport layout, facilitating advanced visualization and analysis. Users can now seamlessly browse 4D images, jump to specific frames, and create computed images for analysis, such as sum, subtraction, or averaging frames, all within a streamlined workflow. 

This project was made possible through the generous funding support of Washington University in St. Louis and Dr. Kooresh Shoghi.

Try the 4D Visualization Mode
Watch full video
Unlock Deeper Insights from Your Ultrasound Data

Get more from your ultrasound data with enhanced region of interest (ROI) metadata support. Our annotation tools now utilize this valuable information to provide accurate analysis and spacing insights. Make the most of your ultrasound data, effortlessly. Try it here.
Advanced Tools

Enhance your image analysis with our new set of advanced tools in OHIF viewer's segmentation tools. Experience unparalleled precision with:
  • Spline tools featuring various basis function supports
  • Freehand ROI annotation tools for flexible marking
  • Livewire, with magnetic snapping to edges for effortless tracing
  • Dynamic threshold tool, adapting the threshold to mouse position for optimal thresholding
  • Advanced magnify tool, a movable probe offering variable zoom levels and real-time annotation visibility
Streamline your workflow and unlock new insights with these cutting-edge tools. Try them here.
Watch full video
Efficient Labeling with Auto-Complete Suggestions

Streamline measurement labeling with our intuitive auto-complete feature, contributed by Flywheel with support from Gates Ventures. Predefine labels and let OHIF prompt users to select from suggested options. As users type, the system filters the list, making it easy to find the right label and save valuable time.

OHIF + eContour: Elevating Radiotherapy Planning with Advanced Visualization

We are delighted to announce the acceptance of our set-aside funding proposal for a strategic collaboration with eContour, a widely used radiation therapy treatment planning software platform. eContour provides image-based contouring guidelines and has been adopted by over 45,000 radiation oncology professionals across 128 countries, including approximately half of the radiation oncologists in the United States.

This collaborative effort aims to leverage the OHIF viewer's sophisticated visualization and manipulation tools through the Cornerstone3D library to offer enhanced 3D contour rendering, multi-modality image support, and other advanced features for eContour cases. This will provide a more comprehensive understanding of the treatment area while complementing the existing eContour viewer experience.

This strategic partnership addresses the needs of software users by enhancing standards-compliant data exchange and fostering interoperability between the OHIF Viewer and eContour platforms. By integrating their capabilities, it substantially increases the utility and adoption of both solutions within the research community, significantly broadening the application of OHIF and Cornerstone technologies across various platforms.

DICOM Conformance Statement 

Get access to our new DICOM Conformance Statement, now available for download. This comprehensive guide provides a detailed breakdown of OHIF Viewer's DICOM capabilities, including supported services, Information Object Definitions (IODs), and transfer syntaxes. Special thanks to Radical Imaging for making this valuable resource available to the public.
View the statement
Updated OHIF Viewer Roadmap
Read the Roadmap
Other Viewer Updates

Optimizing resizing of the viewports 

Enjoy a smoother experience with our improved viewport resizing. We have eliminated the lag that occurred when collapsing UI panels, making it faster and more pleasant to resize images within viewports.

Introducing the Revamped Toolbar

Experience a completely revamped toolbar, redesigned from the ground up. Our new architecture simplifies the process of adding buttons and tools, eliminating the need for hacks and workarounds.

The toolbar is now reactive to the active viewport, disabling irrelevant tools until the corresponding viewport is selected. Additionally, our new Toolbox component allows you to place custom buttons anywhere, from panels to pop-up modals. Learn more in our comprehensive migration guides and explore the full potential of our revamped toolbar.
Other Important Developments

Over the last several months there have been significant developments in our Cornerstone 3D library. While much of this new functionality is now available in Cornerstone, we will be rolling these out as integrated OHIF features over the coming year.

Accelerate Image Rendering with HTJ2K

Experience the power of progressive image rendering with HTJ2K, enabling rapid loading and refinement of image quality. With HTJ2K, load and render images extremely quickly, with the quality improving as more data arrives. We have integrated HTJ2K into Cornerstone3D paving the way for faster image loading and rendering. Try it here.

Introducing the Advanced Video Viewport

We're excited to introduce our new video viewport, designed for advanced imaging workflows. This innovative feature supports HTML5 video streams, enabling precise frame-by-frame analysis and longitudinal video annotations. Try it here.

Key features include:
  • Playback control with frame-by-frame navigation
  • Zoom and pan capabilities
  • Advanced annotation tools, including all tools currently available for the basic viewport
  • Customizable metadata for each frame
  • Dynamic adjustments for color balance, brightness, and contrast
  • Advanced contour and labelmap segmentation rendering and editing tools

Interpolation for ROI Tools

Automatically generate contours between slices with our advanced interpolation feature. Draw a contour on one slice, and another on a lower slice, and Cornerstone3D will create interpolated contours on the in-between slices. This saves you time, allowing you to focus on editing and refining your contours, and easily propagate changes to associated contours with a single edit. In the Livewire tool, the interpolated contours will even snap to the edges of the image. 

StackViewport Lablemap Segmentation

We've expanded labelmap capabilities beyond volume viewports. You can now create, render, and edit labelmaps on stack viewports as well. This feature bridges the gap between 2D and 3D segmentation workflows, making it easier to segment 3D volumes. Additionally, we've added utility functions to simplify conversions between 2D and 3D segmentation representations. Try it here.

Contour Segmentation Tools

Easily define and visualize regions of interest (ROIs) with our intuitive contour segmentation tool. Configure rendering options to display contours, filled regions, or both, and adjust color, opacity, and line styles to suit your needs. Seamlessly interact with your contours across all viewports, and utilize advanced features like hole drawing and region removal/appending to refine your segmentations. Try it here.

Simplifying Web Worker Usage

Simplify your development workflow with our new intuitive Web Worker API. Easily offload tasks to separate threads, ensuring seamless performance and responsiveness. Our API abstracts away the complexity of Web Workers, allowing you to focus on writing code. 

As you see, exciting work is happening in the Cornerstone3D, and it needs to be integrated into OHIF Viewer. We welcome collaboration and contributions to speed up the process. 
Community Spotlight: MIDRC

The Medical Imaging Data Resource Center (MIDRC) is an open data and open-source platform using the OHIF viewer, offering researchers and medical professionals’ access to a diverse range of imaging data and resources and features in the field of medical imaging. MIDRC is a collaborative effort initiated in 2020 to tackle the global COVID-19 crisis. Funded by the National Institute of Biomedical Imaging and Bioengineering (NIBIB) and hosted at the University of Chicago and powered by the Gen3 platform, MIDRC is co-led by the American College of Radiology® (ACR®), the Radiological Society of North America (RSNA), and the American Association of Physicists in Medicine (AAPM). MIDRC is also now funded by ARPA-H and NAIRR as it pivots to oncology and other diseases/conditions continuing to contribute to the nation’s AI ecosystem.
View the Showcase
Notable Contributions 

Our open-source projects thrive due to the collaborative spirit of our community. In addition to features developed in joint collaborations mentioned above, we would like to express our gratitude for the following notable contributions:
  • Gradient Health: We would like to extend our huge thanks to Gradient Health (@Ouwen) for contributing a highly requested script to generate DICOM JSON metadata.
  • NCI Imaging Data Commons: The NCI Imaging Data Commons team added a new data source for merging series-level data sources and resolved an issue with excessive loading times for large studies.
  • Pixilib Team: The Pixilib team contributed two new features: a configurable viewport interaction mode and a CircleROIStartEndThresholdTool with a new pointsInVolume statistic.
In Case You Missed It 
  • Check out NVIDIA's Vista-3D, a 3D imaging tool for segmenting and annotating human bodies. It uses Cornerstone3D for visualization.
  • Radical Imaging has released FlexView Diagnostic, its FDA cleared viewer-as-a-service based on OHIF v3.
  • Check out the talk by Dr. Gordon J. Harris, exploring the challenges and successes of translating healthcare technologies from academia to real-world use.
  • NCI Imaging Data Commons (IDC) has been using OHIF Viewer since its inception. Recently, IDC team added integration of the IDC Portal with the OHIF v3 viewer as part of the gradual phase out of OHIF v2 that served IDC well for the past 4 years. Some of the highlights of the recent IDC release v18 that you can enjoy thanks to OHIF v3 are the ability to visualize Visible Human Dataset cryosection stacks (see one such example here) and TotalSegmentator analysis results for the NLST collection (example here). If you are interested in following updates for new data releases or features, or have questions about IDC and their use of OHIF, join the IDC user forum!

Stay Connected

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.

Join Us: OHIF Office Hours

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,
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