Horos Software !!top!! -

Horos Software: The Complete Guide to the Open-Source DICOM Viewer

Method B: Query/Retrieve (PACS)

For hospitals/clinics only.

1. Click the Query/Retrieve button (looks like a magnifying glass over a server) in the toolbar.
2. Select the PACS server from the dropdown.
3. Search by Patient Name, ID, or Date.
4. Select the study and click Retrieve.

Core features

• DICOM import/export and PACS connectivity (DICOM C-STORE, C-FIND, C-MOVE)
• Multiplanar reconstruction (MPR) and 3D volume rendering
• Measurement tools: distance, angle, ROI-based HU/attenuation, area/volume
• Advanced display: window/level presets, synchronized series scrolling, cine playback
• Annotation, bookmarks, and report export (PDF/images)
• Plugin architecture and scripting support for extensions
• Patient study database with indexing and search
• Support for multiple monitors and Retina displays

Installation & getting started (brief)

• Download the latest Horos release for macOS from the official Horos distribution site or trusted repository.
• Install and grant required permissions (disk access, network) on macOS.
• Import DICOM files or configure PACS connection (AE Title, host, port).
• Open a study, use presets or customize window/level, perform measurements, and export reports/screenshots.

Horos vs. Other DICOM Viewers

How does Horos stack up against the competition? Let’s compare. horos software

| Feature | Horos (Free) | Horos MD (Paid) | OsiriX (Proprietary) | RadiAnt (Windows) | 3D Slicer (Free/Cross-platform) | | :--- | :--- | :--- | :--- | :--- | :--- | | Platform | macOS only | macOS only | macOS only | Windows only | Win/Mac/Linux | | Price | Free | ~$500-1,500 | $600-5,000+ | $199+ | Free | | FDA 510(k) Cleared | No | Yes | Yes | Yes | No | | 3D Volume Rendering | Yes | Yes | Yes | Limited | Advanced | | PACS Connectivity | Yes | Yes | Yes | Yes | Via plugins | | Anonymization | Built-in | Built-in | Paid add-on | External scripts | Built-in | | Plugin Support | Free plugins | Free + commercial | Extensive (pay) | No | Python-based | Horos Software: The Complete Guide to the Open-Source

Key takeaway: For clinical diagnosis requiring FDA clearance, you need Horos MD or OsiriX. For research and education, the free Horos is unmatched. Click the Query/Retrieve button (looks like a magnifying

Limitations (The Fine Print)

While fantastic, Horos is not perfect for every scenario:

1. Mac Only: It requires macOS. No Windows or Linux version.
2. No FDA 510(k) Clearance: Horos states explicitly on its website that it is not FDA-cleared for primary diagnosis in the US. It is intended for research, vet, and educational use.
3. Slower Updates: Being open-source, development is slower than commercial giants like InteleViewer or GE’s AW Suite.