RadiAnt DICOM Viewer alternatives for Windows
RadiAnt is a capable, inexpensive Windows DICOM viewer. People look for an alternative for three reasons: they need to run a viewer on PCs they do not control, they work in a cath lab and need cardiology measurements, or they want something free. This page compares the realistic options on those three axes, with the vendors’ own listed prices, and says plainly where RadiAnt remains the better pick.
By the Hirovix product team · Published 4 Oct 2026 · Facts checked against the sources listed at the end
Why people look for an alternative
- Portability. RadiAnt must be installed and, per its developers, is not designed to run from a USB drive on a PC without admin rights.
- Cardiology. RadiAnt plays XA cine and has a DSA tool, but does not offer a calibrated QCA toolset for percent diameter stenosis, TIMI frame counting, AHA segment tagging or pre/post-PCI comparison.
- Cost or licensing model. Its subscription or multi-year licence is per PC; a clinician who moves between sites needs a licence on each, or a viewer that moves with them.
- Platform. There is no Mac or Linux version; that question is covered separately on our Horos for Windows page, from the other direction.
The alternatives, compared
Listed prices and the portability facts are taken from each vendor’s own site on the date shown.
| Viewer | Listed price | Portable | Cine XA | Cardiology QCA tools | Best for |
|---|---|---|---|---|---|
| RadiAnt (Medixant) | €5/month, €39/year, €179 for 5 years per licence | No (vendor statement) | Yes | No | One PC you control; fast general radiology |
| MicroDicom | $99 perpetual plus $19.80/year maintenance; free for non-commercial use; CD/DVD/USB edition $349.99 | Partial: a ZIP build runs without an installer on PCs that allow it | Yes | No | Budget general viewer; now with 3D MPR/VR |
| Weasis (open source) | Free | Yes: portable archive, no admin rights needed (vendor FAQ) | Yes | No | Free general radiology viewer that travels |
| Browser viewers (PostDICOM and others) | Subscriptions; PostDICOM lists €79 to €499 per month | Nothing to install, but needs internet and an upload of the study | Varies | No | Sharing studies with people who have internet and permission to upload |
| SoftDicom (viewer on SSD) | Listed at $799, $899 and $999 per drive by capacity | Yes | Vendor site lists general viewing | Not advertised as a QCA toolset | General portable viewing on an SSD |
| PortaDICOM (Hirovix) | PortaDICOM pricing: one licence per 2 TB SSD, per-site licensing available; contact us for current pricing and a free demo on your own study. | Yes | Yes, with adjustable frame rate and look-ahead cache | Yes: calibrated % stenosis, TIMI count, AHA segments, pre/post-PCI compare (review-grade) | Cardiologists and clinicians who work across PCs and sites |
Feature columns describe what each vendor advertises; we did not bench-test every product. Follow the source links and verify against your own studies before buying anything, including ours.
If you need "RadiAnt, but portable"
Weasis is the honest free answer for general radiology, and it is the one RadiAnt’s own staff suggest. If your work is cardiology, or you want your case library to travel with the viewer and a licence the hospital can account for, PortaDICOM is built for that: a 2 TB SSD with the viewer, a searchable library of every case you import, the cine XA codecs, and the calibrated cardiology toolset, running with no install and no admin rights.
If you need "RadiAnt, but free"
Weasis for a full-featured open-source viewer, or MicroDicom under its non-commercial licence if your use qualifies. Both are installed or ZIP-run viewers aimed at general radiology; neither offers cardiology QCA measurements.
When to stay with RadiAnt
A single Windows PC you control, admin rights, general radiology work and a tight budget: RadiAnt does that job well and cheaply. Switch only if one of the three reasons above is real for you.
FAQ
What is the best free alternative to RadiAnt?
Weasis. It is open source, actively developed, supports cine, and publishes a portable build that runs without admin rights. MicroDicom is free for non-commercial use only.
Which alternative works on a locked-down hospital PC?
A genuinely portable viewer: Weasis (free, general radiology) or PortaDICOM (SSD-based, with cardiology tools and a travelling case library). Installed viewers and most browser viewers do not.
Is there a RadiAnt alternative for the cath lab?
For review work, PortaDICOM: cine XA playback plus calibrated % diameter stenosis, TIMI frame count, AHA segments and pre/post-PCI comparison. For diagnostic QCA reporting you need the lab’s regulated workstation package.
Does any of these run on a Mac?
Weasis is cross-platform. RadiAnt, MicroDicom and PortaDICOM are Windows; PortaDICOM has macOS and Linux builds on its roadmap.
Related guides and comparisons
- ComparisonPortable RadiAnt, or RadiAnt without admin rights: what actually works
- ComparisonMicroDicom alternatives
- ComparisonHoros for Windows: there is no PC version, so what do you use?
- ComparisonWeasis vs PortaDICOM
- ComparisonBrowser viewer, installed viewer, or a viewer on an SSD?
- GuideHow to open a DICOM CD on a Windows PC
Sources
Third-party facts on this page were checked on the date shown at the top. Vendors change prices and features; verify before you buy.
See PortaDICOM on your own scans
A free demo on one of your studies is the fastest way to know it fits — no install, no obligation.