Weasis DICOM medical viewer

A free/libre DICOM viewer

Weasis is a multipurpose standalone and web-based DICOM viewer with a highly modular architecture . It is a very popular clinical viewer used in healthcare by hospitals, health networks, multicenter research trials, and patients.

Weasis DICOM viewer is cross-platform, free/libre and open source software (FLOSS ), multi-language and allows a flexible integration to PACS, RIS, HIS or PHR . This multi-platform DICOM viewer runs with several processor architectures on Windows, Linux, and Mac OS (see the packages available for download ). It allows high-quality renderings with high performance through the OpenCV library.

Since version 4, it has a responsive user interface linked to the operating system options and works well on high-resolution screens.

It has been designed to meet several expectations of clinical information systems and their future evolution regarding medical imaging: providing web-based access to radiological images, as well as covering a considerable number of DICOM types and offering multimedia capabilities.

Here are the main features:

  • 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 with different calibration, support of HiDPI (High Dots Per Inch) monitors, full-screen mode
  • Multiplanar reconstructions and Maximum Intensity Projection
  • Display Structured Reports
  • Display and search into all DICOM attributes
  • Display cross-lines
  • Measurement and annotation tools
  • Region statistics of pixels (Min, Max, Mean, StDev, Skewness, Kurtosis, Entropy)
  • Histogram of modality values
  • SUV measurement
  • DICOM Send (storeSCU and STOW-RS)
  • DICOM Query/Retrieve (C-GET, C-MOVE and WADO-URI) and DICOMWeb (QUERY and RETRIEVE)
  • 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, generate new UIDs, transcoding, TIFF, JPEG, PNG…)
  • Magnifier glass with advanced display options
  • Native and DICOM printing
  • Read DICOM image containing float or double data (Parametric Map)
  • DICOM ECG Viewer
  • Dicomizer module to convert standard images into DICOM

Weasis can display the content of most DICOM files with a high level of implementation of the DICOM standard.

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Documentation website

This current documentation has been statically generated with Hugo with a simple command: hugo – source code is available at GitHub .