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.
Related Software
| Medical Imaging Software | |
|---|---|
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| Weasis | Multipurpose standalone and web-based DICOM viewer |
| OHIF Viewer | Browser-based medical imaging viewer |
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| MITK | Medical Imaging Interaction Toolkit |
| Starviewer | Medical imaging software fully compliant with the DICOM standard |
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| DicomBrowser | Inspect and edit DICOM header fields, and DICOM viewer |
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| openDICOM.NET | DICOM library project |
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| Ginkgo CADx | Advanced DICOM viewer and dicomizer with conversion functionality |
Read our verdict in the software roundup.
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