Smart Scrollbar

Navigating large image series just got easier. The new Smart Scrollbar highlights which images in a series have finished loading, so you always know how much is ready to view at a glance.

By default, scrolling moves smoothly through the images that are already loaded, meaning less time spent waiting on images that are still downloading — with the ability to jump to any slice with a click. It's especially handy for large studies or slower connections, giving you a more responsive experience and a clear visual sense of loading progress.

Learn more about the Smart Scrollbar component and see details on how to customize it.

New Study List

OHIF now ships with an all-new Study List out of the box. It improves quality of life with easier study preview and launch capabilities, while retaining all of the customization and flexibility of the previous version.

Check it out in our public demo and see our documentation to learn more.

Appearance Themes & UI-next Component Library

We've completed the migration of all OHIF viewer components to the UI-next library. The new library features a modern UI, better support for adaptive and mobile environments, and a simple preview function that lets you see a component in action before building with it.

OHIF now also supports dynamic theming of viewer components, including a theme previewer with many default and custom options. See the Colors & Theming page for guidance, or see how to enable the Appearance dialog.

Labelmap Segmentation

Following community feedback, we've revamped the one-click segmentation tool to greatly improve performance and usability. The tool now detects and applies region borders on PET with greater accuracy and less delay during calculation.

The resulting ROI can be presented as a preview or automatically accepted for seamless editing with other labelmap segmentation tools.

We've also improved labelmap segmentation and fixed bugs across the board, resulting in a smoother, less resource-intensive experience overall.

Cornerstone 5.0

Cornerstone3D has received a major overhaul focused on improved performance and ease of use across the board. Some of the highlights include:

• Redesigned viewport architecture: a new GenericViewport base with explicit, per-data-type render paths (planar CPU/GPU, video, ECG, whole-slide imaging, and 3D volume), cleanly separating camera state, viewport presentation, and data presentation.
• New data-type support & rendering features: a dedicated ECG viewport for DICOM waveforms, volume cropping, configurable 3D sampling distance, render stats, and image smoothing/sharpening for stack and volume viewports.
• Upgraded core foundation: bumped to vtk.js 34.x, a new single-source metadata module, and a toolchain migration from yarn/bun to pnpm.
• Guided upgrade path: codemods ship in the 5.x registry (including a generic-viewport transform) to automate much of the migration from 4.x.