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| | Hello OHIF community! We’re excited to bring you OHIF v3.11, with new features supporting radiation therapy, ultrasound, and many other improvements. Let’s take a look at the changes! |
| Viewport Overlay for Fusion and More |
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| OHIF v3.11 introduces a major upgrade to the viewport dialog, expanding it from basic segmentation control to full-featured multimodality data fusion and overlay management. Users can now integrate and view datasets such as PET over CT or RT Dose in a single viewport, with interactive controls for opacity and blending to fine-tune how they appear together. These tools simplify overlay management, speed up multimodality imaging and radiation therapy workflows, and give you clearer visual insights, whether you’re comparing functional and anatomical data or reviewing dose distributions alongside imaging studies. |
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| The OHIF Viewer now offers a dedicated ultrasound mode for precise annotation and analysis of pleural and B-lines, essential markers in lung ultrasound imaging. Users can draw and manage lines directly on ultrasound frames, toggle overlays for clearer visualization, and automatically calculate pleura percentage for each annotated frame. Special thanks to Dr. Tina Kapur and the team at Brigham and Women’s Hospital for making this project possible through the NIH grant R01EB035679: An AI-Assisted Strategy for Monitoring Pulmonary Congestion in Acute Heart Failure Patients in Emergency Settings (Tina Kapur, Andrew Goldsmith, Peter Pang, Akshay Desai). |
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| For a long time, OHIF Viewer has supported importing and exporting DICOM SR objects. One of the most requested features from the community has been the ability to work with SCOORD3D, which enables import and export of annotations with 3D coordinates that are not bound to a specific image plane. This makes it possible to represent measurements, points, and shapes in true volumetric space, allowing for more flexible and accurate annotations across multi-planar views. We’re happy to share that SCOORD3D support is now available, thanks to a contribution from the Freie Universität Berlin team.
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| | Support for DICOM Labelmap Segmentations IOD |
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| OHIF Viewer now supports the new DICOM Label Map Segmentation standard, making large, non-overlapping segmentations load much faster, use less memory, and handle bigger datasets more efficiently. This feature complements existing DICOM segmentation formats, adding a faster option while keeping full compatibility. In addition, we have introduced a new tool that, when enabled, shows segment labels when hovering the mouse over a segment’s edge. |
| | Radiation Therapy Dose Overlay |
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| | The latest version of the viewer introduces full support for RT Dose visualization, allowing users to overlay RT Dose data directly onto imaging modalities such as CT and MR scans. This integration enables more accurate assessment and improved planning in radiation therapy workflows, allowing users to seamlessly view DICOM RT Dose objects within the same viewport as anatomical images. The feature supports adjustable visualization settings, including transparency, color mapping, and dose thresholds, providing users with the flexibility needed to tailor views to clinical needs. |
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| Advanced Multi-planar Visualization for Radiation Therapy Structure Sets |
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| OHIF now supports projecting RT Structure Set (RTSS) contours in orientations beyond their original acquisition plane. Using separate-thread processing, the viewer reconstructs and displays contours in different views without affecting UI performance. The update supports seamless integration into your workflows, boosting spatial accuracy and overall utility for clinicians and researchers. |
| | | | | The OHIF team and community contributors have been hard at work expanding test coverage for the Viewer and Cornerstone3D. Since the last major release earlier this year, we’ve added 39 new tests covering areas such as tiled rendering, MPR, stack-to-volume fusion, statistical validation of ROI threshold measurements, annotation tools, segmentation workflows, multi-modal displays, TMTV reporting, and worklist UI. If you or your team would like to take part in testing, feel free to send us a message. Special thanks to Quantitative Imaging for Personalized Cancer Medicine, University Health Network, Toronto for their ongoing contribution to OHIF test coverage. |
| | | Freie Universität Berlin – Contributed the Cornerstone3D volume cropper example and related changes, plus DICOM-compliant save/load for annotation comments (labels) and their positions. On the CS3D side, they added save/load support for MPR annotations. New Lantern – Delivered support for viewports on large screens and an improved rendering engine enabling better performance Imaging Data Commons (IDC) – Added mouse-hover segment display functionality. FlexView Team – Provided multiple fixes across both Cornerstone and OHIF. Centaur Labs – Contributed the group history feature
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| OHIF v3.12 will introduce a major upgrade to contour segmentation with a dedicated panel that clearly separates contour tools from labelmap tools, enabling easy switching and a cleaner, more intuitive workflow. The release adds spline-based segmentation, freehand drawing, livewire tracing, and a sculpture-style tool for precise shape adjustments, along with new capabilities for smoothing, merging, simplifying, and cleaning up contours. Logical operations such as add, remove, duplicate, and hole-based segmentation will further streamline complex editing and composite shape creation, making contour workflows more powerful and efficient. |
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| | OHIF Office Hours are held every other Tuesday at 11 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, OHIF Team
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