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Weasis is a free/libre, cross-platform DICOM viewer (standalone and web-based) with a modular architecture used in hospitals, health networks, multicenter trials, and by patients. It integrates with PACS, RIS, HIS, or EHR systems and runs on Windows, Linux, and macOS, delivering high-performance medical imaging renderings via OpenCV with a responsive, high-DPI UI. It supports a wide range of DICOM types and imaging tools, including import/export (DICOM, ZIP, DICOMWeb), measurements and annotations, 3D/volume rendering and MPR, as well as specialized viewers and modules such as DICOM RT, SR, AU, and Dicomizer.
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Healthcare AI Triage and Imaging Software →Where AI ranks Weasis