Weasis – multipurpose standalone and web-based DICOM viewer

Weasis is a multipurpose standalone and web-based DICOM viewer with a highly modular architecture. It’s available as a desktop applicatoin or as a web-based application.

It’s used in healthcare by hospitals, health networks, multicenter research trials, and patients. It allows high-quality renderings with high performance through the OpenCV library.

The software allows a flexible integration to PACS, RIS, HIS or PHR.

Features include:

  • Connect to any PACS via a web portal or as an XDS-I consumer in an IHE (Integrating the Healthcare Enterprise) environment.
  • Can be configured with very low memory footprint.
  • DICOM Send (storeSCU and STOW RS).
  • DICOM Query/Retrieve (C-GET, C-MOVE and WADO).
  • Dicomizer module (allow importing standard images and convert them in DICOM).
  • API for building custom plug-ins.
  • Logging available in the Java console or from Weasis log files.
  • Internationalization support.

Viewer features include:

  • Display all kinds of DICOM files (including multi-frame, enhanced, MPEG-2, MPEG-4, MIME Encapsulation, SR, PR, KOS, AU, RT and ECG).
  • Viewer for common image formats (TIFF, BMP, GIF, JPEG, PNG, RAS, HDR, and PNM).
  • Image manipulation (pan, zoom, windowing, presets, rotation, flip, scroll, crosshair, filtering…).
  • Layouts for comparing series or studies.
  • Advanced series synchronization options.
  • Display Presentation States (GSPS) and Key Object Selection.
  • Create key images (Key Object Selection object) by selection.
  • Support of Modality LUTs, VOI LUTs, and Presentation LUTs (even non-linear).
  • Support of several screens and full-screen mode.
  • Multiplanar reconstructions and Maximum Intensity Projection.
  • Display Structured Reports.
  • Display cross-lines.
  • Measurement and annotation tools.
  • Region statistics of pixels (Min, Max, Mean, StDev).
  • SUV measurement.
  • Save measurements and annotations in DICOM PR or XML file.
  • Import CD/DVD and local DICOM files.
  • Export DICOM with several options (DICOMDIR, ZIP, ISO image file with Weasis, TIFF, JPEG, PNG…).
  • Magnifier glass.
  • Native and DICOM printing.
  • Read DICOM image containing float or double data (Parametric Map).
  • DICOM ECG Viewer.

Website: weasis.org
Support: GitHub Code Repository
Developer: Nicolas Roduit
License: Eclipse Public License


Weasis is written in Java. Learn Java with our recommended free books and free tutorials.

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