ohif-viewer/platform/docs/versioned_docs/version-3.11/migration-guide/3p8-to-3p9/6-RTSTRUCT.md

id	title	sidebar_position	summary
6-rtstruct	RTSTRUCT	6	Migration guide for RT Structure Set rendering in OHIF 3.9, explaining the transition from VTK-based rendering to SVG-based rendering for improved stability and speed while maintaining stack viewports instead of converting to volume viewports.

RTStructure Set has transitioned from VTK actors to SVG.

We have transitioned from VTK-based rendering to SVG-based rendering for RTStructure Set contours. This change should not require any modifications to your codebase. We anticipate improved stability and speed in our contour rendering.

As a result of this update, viewports rendering RTStructure Sets will no longer convert to volume viewports. Instead, they will remain as stack viewports.

Read more in Pull Requests:

• https://github.com/OHIF/Viewers/pull/4074
• https://github.com/OHIF/Viewers/pull/4157