Weasis DICOM Viewer Tutorials

Weasis provides the tools to visualize and analyze images obtained from medical imaging equipment according to the DICOM standard. This free DICOM viewer is used by healthcare professionals, researchers and patients.

If you are new to Weasis, it is recommended to read this page to understand the main elements of the interface.

The tutorials are organized by topics and can be read independently. If a DICOM term is new to you, the glossary defines the ones used here — MPR, MIP, SUV, SEG, SR, RT objects, DICOMweb, window and level.

• GUI Overview

  Find your way around the Weasis window: what to set before starting, language and regional settings, theme and scaling, and where the other viewers are.

• DICOM Import

  Open DICOM data from any local source — files and folders, a DICOM CD or DVD, a ZIP archive — from the file explorer, the Weasis menu or a command.

• DICOMweb Configuration

  Configure a DICOMweb node for query (QIDO-RS), retrieve (WADO-RS) and store (STOW-RS), with the settings known to work for common providers.

• Docking

  Rearrange the interface by docking, undocking, splitting and pinning the central views and the tool panels.

• DICOM Export

  Export a selection as DICOM to a folder, a ZIP archive or a DICOMDIR, and save the view currently displayed as an ordinary picture file.

• DICOM Explorer

  Browse the patient, study and series tree of everything loaded in Weasis, and control what each series shows.

• DICOM 2D Viewer

  Read a stack of DICOM images: viewport layouts, toolbars, window level, zoom and pan, cine playback, and the preferences each view remembers.

• View Synchronization

  Synchronize views manually or automatically: the frame of reference they share, the synchronization modes, and the scope each one applies to.

• 3D Cursor

  Point at the same anatomical location in every open series and reconstruction at once, in 2D views and in MPR, with the 3D cursor.

• MPR Viewer

  Build axial, coronal, sagittal and oblique reconstructions from a volume, drive them with the crosshair, keep the planes synchronized, and measure across them.

• Curved MPR Viewer

  How to build a panoramic view and cross-sectional slices along a curve (Curved MPR / CPR), typically from a dental CBCT

• MIP Viewer

  Activate Maximum Intensity Projection in the 2D viewer and set the options that control the projection.

• Image Fusion

  How to overlay a PET or SPECT series on a CT/MR base (PET/CT fusion) and read SUV statistics

• DICOM 3D Viewer

  Display volume data in 3D: hardware requirements, rendering presets, the MPR crosshair cut mode, and synchronization with the 2D views.

• DICOM ECG Viewer

  Read electrocardiography waveforms stored as DICOM: display format and zoom, lead and cursor information, amplitude and time readings.

• DICOM SR Viewer

  Read DICOM Structured Reports: the report header, the content tree, and the measurements and image references it carries.

• DICOM Audio Player

  Play DICOM audio waveforms, control playback and volume, and export the audio track to a standard file.

• Draw & Measure

  Draw and measure on images: the drawing tools, the values each one reports, and the preferences that control how they look and behave.

• DICOM RT

  Display radiotherapy data: RT Structure Set contours, isodose lines from the RT Dose, and the dose-volume histogram chart.

• DICOM Attributes

  Open the DICOM attributes of an image or a series, search for a specific tag or value, and compare attributes between series.

• Lookup Tables (LUT)

  How color, VOI and presentation lookup tables are applied, how windowing and rendering interact, and how to use window/level presets.

• Build DICOM KO and PR

  Create and export DICOM Key Object Selection to flag key images, and Grayscale Softcopy Presentation States to keep window level, annotations and layout.

• DICOM SEG

  Display DICOM Segmentation objects over their source images, read the information of each region, and tell which series can carry a segmentation.

• AI DICOM Objects

  Display what an AI framework sends back as DICOM: derived images, segmentation overlays, structured reports and documents.

• Zoom

  Zoom controls and presets, real-world size display, and the magnifying lens with its own set of controls.

• Histogram

  Display the histogram of the real image values and of the output LUT, and adjust how it is computed and drawn.

• Print

  Print a selection of images to an ordinary printer or to a DICOM printer, choosing the layout and the print mode.

• Image Orientation

  How orientation is labelled for human (BIPED) and veterinary (QUADRUPED) imaging, and how it carries over to multiplanar reconstruction.

• Third-party Launcher

  Create a launcher that starts another application from Weasis and hands it the current selection.

• Spatial Calibration

  Set or correct the pixel spacing of an image or a whole series, so that distance and area measurements read in real-world units.

• Styles and themes

  Apply another theme to the interface, scale it for high-resolution displays, and adjust how viewer elements look.

• Language & Regional Settings

  Switch the interface language and regional settings from the user interface, or set the default locale for a whole deployment.

• Logging

  Find the log folder, tell the types of log file apart, configure the rolling log, and raise the trace level when reporting a problem.

• Proxy server

  Reach a PACS or a DICOMweb server through an HTTP proxy, configured from the user interface or from the launch parameters.

• Dicomizer

  Turn ordinary image files into DICOM objects with the Dicomizer, publish them to an archive, and launch it from another application.