Weasis is a free medical DICOM viewer used in healthcare by hospitals, health networks, multicenter research trials, and patients.

⚠️ Security: Weasis is not affected by CVE-2021-44228 as it does not use log4j but a simple OSGI logger.

Release History

Build Weasis

The master branch contains Weasis 4.x.x which requires Java 17+.

Old branches are:

Flexible integration with PACS, RIS, HIS or PHR (see integration documentation)
Desktop distribution (Windows, macOS, and Linux)
Responsive user interface working well on high DPI screens
Web access through weasis protocol
Multi-language support
Configuration of preferences on server-side and client-side
API for building custom plug-ins
DICOM Send (storeSCU and STOW-RS)
DICOM Query/Retrieve (C-GET, C-MOVE and WADO-URI) and DICOMWeb (QUERY and RETRIEVE)
Dicomizer module to convert standard images into DICOM
Embedded DICOM viewer in CD/DVD or other portable media

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
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