Navigation and cine

2D stack navigation

• Scroll the mouse wheel, drag on a slider, or use on-screen stack controls in the Navigate Transform (depending on build) to move along the slice direction.
• Window/level is separate: see Window, level, and LUT.

Use case: long CT—fast scroll in lung window, stop at abnormality, then narrow scroll for exact slice of maximal diameter.

Use case: many MR series: ensure the right series is in the active viewport (click it) before you scroll, so the wheel targets the study you are thinking about.

Cine (playback)

• Cine plays temporal or through-plane sequences. Enable cine from the viewer toolbar, then use play/pause and rate (UI controls) as exposed.

Use case: cardiac CT cine of the heart, or dynamic sequences where a quick visual sweep beats manual scrolling.

Use case: check for motion in a long acquisition—cine can reveal respiration or swallow artifacts better than a single static slice.

Tip: cine is not a substitute for frame timing metrics on a dedicated cardiac workstation, but for triage in Xenrad you can at least see motion and timing at a high level when the DICOM is present.

3D and MPR tools

• When a viewport is volume-capable, the Navigate group exposes 3D and MPR tools such as crosshairs and 3D rotation (icons vary). Volume-only features show as disabled for pure 2D stacks.

Use case: CTA, rotate the 3D volume to see stent–vessel relationships; use MPR to drop a coronal reformat through a tortuous vessel.

Use case: measure or orient before segmenting; see Segmentation.

Keyboard shortcut reminders

• h / z — Pan / Zoom (swap away from a measurement or window tool when you are done)
• 1 / 2 — quick 1x1 and 2x2 when you switch between full-screen and comparison
• r — reset after aggressive zoom
• f — fullscreen to declutter a single pane
• l — start Length for a quick on-the-fly size check

Related

• Viewports and layouts — pick the layout before cine; some layouts only run cine in one pane.
• Measurements and annotations — if you use l for a length, you are in a measurement path.