Enhanced Viewport Dialog for Multimodality Fusion

The viewport dialog has been completely reimagined, transforming from a basic segmentation controller into a comprehensive multimodality data fusion and overlay management system. Users can now seamlessly integrate and view multiple datasets such as PET over CT or RT Dose overlays in a single viewport.

Interactive controls for opacity and blending allow you to fine-tune how datasets appear together, simplifying overlay management and accelerating multimodality imaging workflows. Whether you're comparing functional and anatomical data or reviewing dose distributions alongside imaging studies, these tools provide clearer visual insights.

Dedicated Lung Ultrasound Mode

OHIF now offers a specialized lung 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.

DICOM Labelmap Segmentations IOD Support

OHIF Viewer 3.11 now supports the new DICOM Label Map Segmentation standard, revolutionizing how we handle large, non-overlapping segmentations. This implementation makes segmentations load significantly faster, use less memory, and handle bigger datasets more efficiently.

This feature complements existing DICOM segmentation formats, adding a high-performance option while maintaining full backward compatibility with traditional segmentation objects.

Radiation Therapy Dose Overlay

Full support for RT Dose visualization is now available, 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.

Users can 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 the flexibility needed to tailor views to specific clinical requirements.

SCOORD3D Support for 3D Coordinate Annotations

OHIF Viewer now supports SCOORD3D, enabling import and export of annotations with 3D coordinates that are not bound to a specific image plane. This allows for representing measurements, points, and shapes in true volumetric space, providing more flexible and accurate annotations across multi-planar views.

This highly requested community feature enables working with DICOM SR objects containing 3D spatial coordinates, making it possible to create and share annotations that maintain their accuracy across different viewing orientations. We're grateful to the Freie Universität Berlin team for their contribution to this functionality.

Advanced Multi-planar Visualization for RT Structure Sets

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.

This update provides seamless integration into oncology workflows, significantly boosting spatial accuracy and overall utility for clinicians and researchers working with radiation therapy planning and review.