Window / Level
Left-click and drag on any viewport: horizontal drag changes window width (contrast), vertical drag changes window level (brightness). Try the presets above for common tissue windows.
Scroll
Use your mouse wheel over a viewport to step through slices.
MPR
The three views are reconstructed from the same volume. Moving through one plane updates the crosshair reference lines on the others.
Measurements
Select Length, Angle, ROI, Ellipse, or Arrow from the toolbar, then click and drag on a viewport to annotate. Values are computed in real-world units (mm / mm²) using the DICOM pixel spacing.
Compare
Use "Add Sequence" to import another series or study without losing what's loaded, then click "Compare" and pick two series from the panel to view them side by side, each with independent window/level, zoom and scroll.