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Smart. Easy. Fast.
RadiAnt is a PACS DICOM viewer for medical images
designed to provide you with a unique experience.
With its intuitive interface and unrivaled performance,
you'll never look back.
"Very good software. Very good job. I dreamed a so good and powerful software on Windows. Go on your project."
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Did you know? RadiAnt DICOM Viewer has been named researchers' tool of choice in more than 4100 scientific papers.
Learn how to cite RadiAnt in academic publications. We offer significant discounts for authors.
RadiAnt DICOM Viewer 2024.1 BETA
February 12, 2024
RadiAnt DICOM Viewer 2024.1 BETA
The most recent beta version of RadiAnt introduces the highly anticipated DICOM anonymization feature. This feature enables the seamless removal of personal-identifying information from DICOM files, allowing for the secure sharing of files without the concern of sensitive data leaks to unauthorized parties. Users can also enjoy the convenience of customizing and saving anonymization templates for swift and efficient use.
RadiAnt DICOM Viewer 2023.1
April 23, 2023
RadiAnt DICOM Viewer 2023.1
Our newest version, 2023.1, features various improvements and bug fixes. For more information, please see the changelog. In addition, we have introduced two new features: Length Ratio and Ellipsoid Volume Calculation.
Multiple RadiAnt PCs with Orthanc PACS
September 21, 2022
Multiple RadiAnt PCs with Orthanc PACS
In our recent tutorial we show how to install Orthanc PACS server on a linux machine and configure two Windows PCs with RadiAnt DICOM Viewer installed, so that DICOM studies can be uploaded to the PACS server from one PC, and then retrieved on the second PC.

The video is available at
Special Discount for Journal Article Authors
August 12, 2022
Special Discount for Journal Article Authors
Have you published an article mentioning RadiAnt in a scientific journal?
You may qualify for a special price for our software!

Mentioning "RadiAnt DICOM Viewer" in a published article entitles you to a one-year plan for 1 EUR. Including our website link, "," in the article gives you the right to purchase a two-year plan for 1 EUR.

Read more about this offer.
Free subscription plans for legacy license owners
June 15, 2022
Free subscription plans for legacy license owners
Did the maintenance for your legacy license expire, but you still would like to use the newest versions of RadiAnt DICOM Viewer? If so, this offer might be interesting for you.

You can convert your legacy license to a new subscription plan free of charge and enjoy all the new features and improvements. If your maintenance expired less than one year ago, you will get a 3-year plan free of charge (111 EUR saved for each converted license). Older licenses will get you 2-year or 1-year plans.

Just log in to My Licenses portal to find out more details and take advantage of this offer.
2 days ago by Radman
3D Preset Modification
1 week ago by
Color Lookup Tables
1 week ago by
Dicomweb standard integration
1 week ago by Ptilu60
Multiple formats of DICOM files supported

Supports multiple DICOM file types

The software has the capability to open and display studies obtained from different imaging modalities:

  • Digital Radiography (CR, DX)
  • Mammography (MG)
  • Computed Tomography (CT)
  • Magnetic Resonance (MR)
  • Positron Emission Tomography PET-CT (PT)
  • Ultrasonography (US)
  • Digital Angiography (XA)
  • Gamma Camera, Nuclear Medicine (NM)
  • Secondary Pictures and Scanned Images (SC)
  • Structured Reports (SR)

Many types of DICOM images are supported:
  • Monochromatic (e.g. CR, CT, MR) and color (e.g. US, 3D reconstructions)
  • Static images (e.g. CR, MG, CT) and dynamic sequences (e.g. XA, US)
  • Uncompressed and compressed (RLE, JPEG Lossy, JPEG Lossless, JPEG 2000)

Basic tools for manipulation of images

All the necessary tools close at hand

RadiAnt DICOM Viewer provides the following basic tools for the manipulation and measurement of images:

  • Fluid zooming and panning
  • Brightness and contrast adjustments, negative mode
  • Preset window settings for Computed Tomography (lung, bone, etc.)
  • Ability to rotate (90, 180 degrees) or flip (horizontal and vertical) images
  • Segment length
  • Mean, minimum and maximum parameter values (e.g. density in Hounsfield Units in Computed Tomography) within circle/ellipse and its area
  • Angle value (normal and Cobb angle)
  • Pen tool for freehand drawing

Lightning fast performance

Quick as lightning

RadiAnt DICOM Viewer was designed to use resources as efficiently as possible. It can make use of a multiprocessor and multicore system with large amounts of gigabytes of RAM, but will also run on an old single-core machine with only 1GB RAM.

A 64-bit version is provided for modern systems to keep all opened images in more than 4GB of memory, if necessary. Asynchronous reading lets you browse and process images while they are still being opened.

All of this is available in one very compact application that has an installer size of just over 7MB.

Browse and compare multiple series of images

Compare different series or studies

Multiple series of one study or several studies can be concurrently opened in the same or different windows for comparison purposes.

Series consisting of images that have been acquired in the same plane (e.g. Computed Tomography series before and after administration of the contrast medium) are automatically synchronized by default.

Cross-reference lines are displayed for better correlation of the anatomy when browsing series with different image planes (e.g. Magnetic Resonance study).

PACS client feature for searching and retrieving studies

Search and download studies from PACS locations

The PACS (Picture Archiving and Communication System) client feature lets RadiAnt DICOM Viewer query and retrieve studies from other PACS hosts.

Supported service class users/providers are: C-ECHO SCU, C-ECHO SCP, C-FIND SCU, C-MOVE-SCU, C-STORE-SCP.

Received DICOM files can be stored in a temporary folder and deleted when RadiAnt closes, or they can be saved in the local database.

Local archive

Local archive

The local archive feature allows you to import DICOM studies from CD/DVD discs, USB flash drives, local and network folders or PACS servers, and store them on your local hard drive so that they can be easily accessed at a later date.

The local archive can be helpful in situations in which the original media is no longer available, or you would like to open the study without the need to repeatedly retrieve it from a PACS server.

You can also access the database to organize and quickly find studies in your collection of DICOM files that are stored on the hard drive.

Export DICOM files to BMP, JPEG, WMV

Export DICOM files to images and movies

Create visually stunning presentations and professional publications - RadiAnt DICOM Viewer can export DICOM files to JPEG (compressed) or BMP (uncompressed bitmap) images and WMV (Windows Media Video) movies.

One image, an entire series or all opened images can be exported simultaneously.

Displayed images can be quickly copied to the Windows clipboard using the CTRL+C shortcut and can be quickly and easily pasted into Word or PowerPoint documents.

2D and 3D Multi-planar reconstructions (MPR)

Multiplanar reconstructions

The MPR tool provided within RadiAnt DICOM Viewer can be used to reconstruct images in orthogonal planes (coronal, sagittal, axial or oblique, depending on what the base image plane is). This can help to create a new perception of the anatomy that was not possible to visualize using the base images alone.

The reconstruction process is extremely fast: a coronal series can be created from more than 2000 axial CT slices in approximately three seconds (on a modern Intel Core i7 system).

3D Volume Rendering (VR)

3D volume rendering

The 3D VR (volume rendering) tool lets you visualize large volumes of data generated by modern CT/MR scanners in three dimensional space. The different aspects of the data set can be interactively explored in the 3D VR window.

This tool lets you rotate the volume, change zoom level and position, adjust color and opacity, measure length and show hidden structures by cutting off the unwanted parts of the volume with the scalpel tool. The image is rendered progressively to maintain fluid operations even on slower machines.

PET-CT image fusion

PET-CT image fusion

Overlay a color-mapped PET image onto a CT scan to obtain anatomical references for regions with increased FDG (fluorodeoxyglucose) uptake values.

Use the ellipse tool to measure maximum, minimum and average values of SUVbw (Standardized Uptake Value calculated using body weight) in a specified area.

Image fusion can also be applied to other imaging modalities, such as Magnetic Resonance, e.g. DWI images can be fused with T1 or T2-weighted scans.

Digital Subtraction Angiography (DSA)

Digital Subtraction Angiography

The Digital Subtraction Angiography (DSA) technique can be applied to a fluoroscopy series (XA) to allow you to visualize blood vessels better.

The pre-contrast image (so-called mask) is subtracted from the subsequent images in which the arteries/veins are filled with the contrast media and, thus, the bony or dense soft-tissue areas are removed from the final image.

The auto pixel-shift feature lets you automatically correct the alignment of the mask and the live image simply by selecting the area of interest.

Time-intensity curves (TIC)

Time-intensity curves

RadiAnt DICOM Viewer lets you visualize the lesions' enhancement behavior (e.g. in Breast MRI) by plotting time-intensity curves (TICs).

Different types of curves can be obtained: Ia - straight (the signal intensity continues to increase over the entire dynamic period) / Ib - curved (the time-signal intensity curve is flattened in the late postcontrast period), II - plateau (the signal intensity plateaus in the intermediate and late postcontrast periods) or III - washout (the signal intensity decreases (washes out) in the intermediate postcontrast period).

Support for multitouch features on Windows 10

Multi-touch support

If you have a Windows 8 or Windows 10 touch-enabled device, you might find that gestures (motions that you make with one, two or more fingers) are easier to use than a mouse or keyboard. RadiAnt DICOM Viewer enables users to make use of the array of multi-touch gestures:

  • Touch the image with one finger and move it to browse through images of the displayed series.
  • To zoom in or out, touch two points on the image, and then move your fingers away from or toward each other. Drag the image with two fingers to move it and show invisible parts of zoomed image.
  • You can change the window settings (brightness/contrast) by touching the image with three fingers and moving them up/down (brightness) or left/right (contrast).

Multilingual interface - community translations

Multilingual interface

Thanks to our community, RadiAnt DICOM Viewer interface has been translated into over 20 languages so far:

  • Arabic, Brazilian Portuguese, Bulgarian, Chinese, Czech, Danish, Dutch/Flemish, French, German, Greek, Hungarian, Indonesian, Italian, Polish, Portuguese, Russian, Serbian, Slovak, Spanish, Swedish, Turkish.

Our online tool makes it easy to edit the current translations and create new ones.

RadiAnt DICOM Viewer CD/DVD Viewer


Do you know how frustrating it can be to endlessly wait for a CD with the DICOM study to open?
Does your viewer require the installation of additional components before the images can actually be viewed?

Try the RadiAnt DICOM Viewer CD/DVD autorun package! It is extremely fast, runs from CD/DVD media without installation on Windows 7, Windows 8, Windows 8.1, Windows 10 and Windows 11 systems and does not have any additional software or programming requirements (e.g. .NET, Java).

If the user’s operating system permits, the 64-bit version is opened for better efficiency. On older machines the 32-bit version is used. Approximately just 6MB of overhead data is added to the media.

The logo image displayed after opening the application is fully customizable and can be used to show your company information to your clients.