Labelmap Assist

Quickly extend an existing segmentation to the next / previous slice using the Segment Anything (SAM) model. After propagation, you can fine-tune the result with other tools in the segmentation suite.

Prompt-Based Segmentation

Guide segmentation by placing include or exclude markers. The AI uses these hints to generate precise regions, helping speed up the process while keeping you in control.

These tools are designed to make segmentation faster and more efficient. Performance depends on your machine's hardware, so results may vary based on available resources. Let us know how they work for you.

One Click GPU-Accelerated 3D Segmentation

We are enhancing our segmentation suite with a new WebGPU-accelerated 3D grow cut tool. It runs entirely in the browser, detects segmentable regions in a single interaction, and provides real-time visual feedback for precise selection. To the best of our knowledge, it's the first ever WebGPU implementation of the GrowCut algorithm in the world!

Brush Preview & Border Hover for Segments

We have added many improved quality of life and utility functions to the segmentation suite. First, the user may now create a segmentation in preview mode. The preview can be accepted, edited, or rejected. This tool can be combined with manual tools such as the brush, or integrated into automated workflows to allow opportunity for human verification of results.

We have added the ability to highlight a segment when hovering on the border, making it easier to interact with data containing large amounts of segments or many small regions of interest.

Undo & Redo Any Viewport Action

A highly requested feature is now arriving! Now any action in the viewport can be undone or redone with a simple button click or hotkey press. This includes segmentation tools, measurements, and other user inputted overlays in a viewport.

View Detailed Segment Statistics

With 3.10, segment statistics are now automatically calculated and updated as you draw or modify segmentations. For each segment, OHIF computes values like volume, min/max voxel intensity, centroid location, and advanced PET-specific metrics such as SUVpeak. All processing runs smoothly in the background via Web Workers—no lag, no frozen UI. This was one of the most requested features, and it's designed to just work without getting in your way.

Generate Bidirectional Measurement for Segments

This new tool will automatically detect and create a bidirectional measurement in the largest area of a segment. This tool searches across all slices to find the largest bidirectional measurement, calculates it, and adds it directly to the viewport.

Automatic Labelmap Slice Interpolation

We have added a new labelmap interpolation utility that fills in skipped slices between segmentations automatically. It uses morphological priors to generate smooth, consistent results across any plane. The process runs in the background, so you can keep working without interruption.

Component Library & Migration

We have made significant improvements to our UI component library with a focus on improved access, better functionality, and reduced implementation time. Our components have been repolished and migrated to a new library - @ohif/ui-next. This library improves the organization and presentation of UI components, including an interactive showcase that demonstrates components in action without needing to build the viewer. This allows users to make more informed choices and spend less time during OHIF implementation. The viewer section is now fully migrated to our new library—no legacy components remain. Next up: migrating the worklist.