Viewport

Overview

The viewport is the means through which readers interpret and interact with DICOM data. Users can:

  • Apply discrete and continuous actions to the viewports as explained in the toolbar page
  • Assign series to a viewport by selecting it or dragging from the sidebar as explained in the sidebar page
  • Interact directly with the viewport through mouse, touchpad, and scrollbar controls as explained below

Each viewport displays information and controls in four corners (when info overlay is enabled):

  • Top right: Series name and patient name
  • Bottom right: Frame scrollbar with frame count
  • Bottom left: Display parameters: window width/level, zoom level, pan, signal intensity (if enabled).
  • Top left: Viewport action buttons: DICOM metadata popup, screenshot, cine, MIP, clear annotations, opacity/grayscale mode

Interactions

The viewport supports various interaction methods for navigating and manipulating DICOM images. Each interaction impacts the viewport differently depending on the current mode (2D or 3D).

Mouse Scroll

Navigates through a series' frames in 2D or zooms in/out in 3D mode.

Touch Pad Two Finger Scroll

Navigates through a series' frames in 2D or zooms in/out in 3D mode.

Touch Pad Pinch

Zooms in/out of the viewport.

Click Drag the Series Scrollbar

Navigates through a series' frames by clicking and dragging the scrollbar located in the bottom right corner of the viewport.

Up/Down Arrow Keys

Navigates through a series' frames using the keyboard arrow keys.

DICOM Metadata

Displays detailed DICOM metadata information for the current series. The information popup appears when the button is clicked, showing patient information, study details, series parameters, and image acquisition settings.

Screenshot Viewport

Captures a WebP image of the viewport without the information overlay. The screenshot includes annotations and cross reference lines if present, and is copied to the clipboard for pasting into other applications like report generation or chart notes.

Cine

Plays or pauses automated playthrough of the series. Once played once on a viewport, a frame rate adjustable scrollbar appears, allowing you to control the playback speed of the cine sequence.

MIP

Maximum Intensity Projection (MIP) displays the highest intensity values along a projection path through the volume, creating a 2D representation that highlights the brightest structures in the series.

Clear Annotations

Clears all annotations on the current frame of the viewport. All other annotations on other frames in that series remain intact.

Opacity/Grayscale Mode

Appears in the bottom right of 3D mode and allows users to have more granular control over the transfer function for 3D rendering. This feature is designed for highly advanced users who need precise control over opacity and grayscale mapping in 3D volume renderings.