Launch Weasis

Demo with multiple DICOM Samples

This page shows a list of DICOM samples for testing viewer capabilities.

Naming convention

  • Patient name starting with “TEST^” and then the general test purpose. “TEST-i18n-” prefix is for internationalization test.
  • In study description: general test description
  • In series description: test description

The demo server is on a free cloud system, so sometimes it requires to launch two times the viewer because the server has to wake up (is turned “idle” after a period of inactivity).

How to launch Weasis

To display the DICOM samples on this page, you need a recent version of Java installed on your system.

Two possible ways of launching Weasis when clicking on Launch button:

  1. Download JNLP will download a jnlp file on most browsers. The file needs to be executed (double-click on the file) from the download folder.
  2. JNLP Protocol will open directly Weasis with the new jnlp protocol (needs a jnlp handler)

    Registration of jnlp handler is available in Oracle Java Runtime installer from JRE 8_111 and in the Java 9 installer:

    • On Windows, it works out of the box.
    • On Mac OS X, it could be necessary to run once Java Webstart to register the jnlp handler at /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/
    • On Linux, a configuration is required.

Internationalized characters

Should display: charset samples

Pixel depth (from 9-bit to 16-bit)

Should always render the same image.


Photometric Interpretation

Pixel Spacing

Select the view and press ’d’ to draw a line.

Pixel Padding Value

Show or hide pixel padding from the “Display” right pane.

Non-square pixels

Stretch or shrink the image according to the “pixel spacing” or “pixel aspect ratio” field.


Show or hide from the “Display” right panel.

Modality LUT

Should always render the same image.


Can be changed in the “Image Tool” right panel.


Show or hide from the “Display” right panel.


Open by the default PDF viewer of the operating system.

DICOM video

Open by the default viewer (associated to the video mime type) of the operating system.

DICOM Audio (AU)

Open by the embedded Java Audio Player.

DICOM floating point pixel data

DICOM Structured Report (SR)

DICOM Presentation State (PR, GSPS)

Click on the right icon over the image to select the Presentation State. Show or hide graphics layers from the “Display” right panel. See How to build DICOM PR.

DICOM Key Object Selection (KO)

Click on the right icon over the image to select the Key Object Selection. See How to build and export DICOM KO.