Open Interactive Studio on a larger screen

Click-to-segment is a precision task — small targets, exact include/exclude clicks, and a three-pane view. It works best on a desktop or tablet. Open this page there to start annotating.

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Interactive Studio

Click to segment Research use only

Build each structure by clicking — left-click to include, right-click to exclude — then refine the contour with the brush tools.

Load a scan

Drop a scan or DICOM folder here

A NIfTI (.nii.gz) or a whole DICOM folder/series

.nii.gzDICOM folder

WL Center —

WL Width —

Opacity 55%

Axial

Slice—

Coronal

Slice—

Sagittal

Slice—

Pick a structure on the left, then click in any pane. Scroll or ↑/↓ to change slice · Shift+click to sync panes · ? for shortcuts.

Keyboard & mouse

Left-clickInclude (with the Click tool) / paint (with the Brush) Right-clickExclude (Click tool) / erase (Brush) Shift+clickProbe a voxel & sync the other two panes CClick-to-segment tool (left include · right exclude) P / XBrush / Eraser (manual edit) Scroll / ↑ ↓Change slice in the selected pane 1 / 2 / 3Select Axial / Coronal / Sagittal Ctrl+ZUndo last action (active structure) Ctrl+Shift+ZRedo NNew structure EscClose fullscreen / clear crosshair