The Official RadiAnt DICOM Viewer Blog
RadiAnt DICOM Viewer on macOS High Sierra
by RadiAnt on July 4, 2018
We have refreshed the tutorial showing how to install RadiAnt on Mac computers. This video depicts the installation process on the latest macOS High Sierra systems.

Disclaimer: RadiAnt DICOM Viewer is built and tested specifically for Windows platform. We do not officially support RadiAnt on platforms other than Windows. RadiAnt can technically run on macOS systems using the open-source Wine software, however, some features may not be available or may cause program crashes.

https://www.youtube.com/watch?v=pVtvbuFrtNI
RadiAnt DICOM Viewer 4.6.5
by RadiAnt on June 14, 2018
Our latest public release (4.6.5) brings a few new features and many improvements:
  • GPU acceleration makes a difference in 3D VR/MIP interactions, if your system is configured with a fast Nvidia GPU.
  • 3D Cursor lets you easily identify the same location on multiple 2D series having the same or different image planes.
  • We added some diversity to the 3D VR window - there are several 3D presets available for spicing up your 3D renderings.
  • Finally, you can send studies to RadiAnt from other PACS locations without the need to initiate the download on the client PC.

Our manual was updated to the latest release. So was the template in the translation tool - you can now complete missing items in your translations.

Check the full changelog and download here.
General Data Protection Regulation
by RadiAnt on May 23, 2018
We value your privacy and want you to understand the choices and control you have over your information. Today we're announcing some changes to Medixant's Privacy Policy to comply with the new European Union data regulation (GDPR).

These changes will take effect after May 25, 2018. We kindly ask you to review the updated Privacy Policy. We’ve provided additional details about the information we collect and how we use that information. We’ve also explained your choices and the control you have over your information, and the measures we’ve put in place to keep your information secure.
Volume Rendering Benchmark
by RadiAnt on March 12, 2018
With the new version featuring GPU accelerated volume rendering just around the corner, we would like to take this opportunity to publish some interesting benchmark results.

The difference between CPU and GPU performance, as far as volume rendering is concerned, is remarkable. Just have a look at this chart.

Summing up, a powerful NVIDIA GeForce card (like GTX 1080Ti) will let you enjoy fluid, non-pixelated, full-screen, interactive volume rendering in RadiAnt DICOM Viewer.
3D Cursor in RadiAnt DICOM Viewer 4.5.9 BETA
by RadiAnt on March 5, 2018
Our latest beta version features 3D Cursor, a tool that lets you quickly localize the same structure in different series.

It can be helpful when viewing series either with the same image orientation (e.g., pre and post-contrast CT) or different image orientations (e.g., MR study of the spine with sagittal and axial series).

Visit our forum to read more details about this feature and download the beta version.
RadiAnt DICOM Viewer 4.5.5 BETA with 3D presets
by RadiAnt on February 6, 2018
In the latest beta version we added a new toolbar button in the 3D Viewer window - "3D presets".

Currently there are a few sample presets available, we will add more in future versions. We will also add a possibility to create your own 3D presets.

Read more and download the latest version.
RadiAnt DICOM Viewer 4.5.1 BETA with GPU accelerated VR
by RadiAnt on December 26, 2017
As the year draws to a close, we have one more beta version for you. This one features the long-awaited GPU accelerated 3D Volume Rendering (for NVIDIA graphics cards).

Check out how fluid the interactive VR can be - it is up to 100x faster than before (depending on your CPU/GPU configuration).

Read more and download the new version here.

We would also like to take this opportunity to wish you a Happy New Year!
RadiAnt DICOM Viewer 4.2.1
by RadiAnt on November 29, 2017
Our latest 4.2.1 release brings the C-GET protocol support to RadiAnt DICOM Viewer. This feature will be helpful for those who could not retrieve studies from PACS servers using the C-MOVE protocol for some reason (e.g., firewall, NAT). We have also added custom search presets to save your time while performing frequently used PACS searches. There are also a few minor improvements.

Download the new version here.

The manual has also been updated to the latest version.
RadiAnt DICOM Viewer 4.1.17 BETA
by RadiAnt on November 4, 2017
We continue to improve the PACS client functionality with our next beta version (4.1.17).

C-GET protocol was added to make possible downloading studies from PACS locations when for some reason incoming connections are blocked (firewall, NAT). Custom search presets can be added so that your favorite PACS searches are performed instantaneously.

Check the full changelog and download here.
RadiAnt DICOM Viewer 4.1.5 BETA
by RadiAnt on October 1, 2017
This beta version brings a few improvements to our viewer: quick text search within opened studies, custom search fields in PACS queries, support for radiant:// URL protocol and more.

Check the full changelog and download here.
RadiAnt DICOM Viewer 4.0.2
by RadiAnt on May 19, 2017
We are happy to announce that a new version of RadiAnt DICOM Viewer with the 3D MPR/MIP feature for visualizing volumes in oblique planes and thick slabs is now ready for download!

As always, we will appreciate your feedback.
3D MPR in action
by RadiAnt on May 18, 2017
Check this short video showing how the new 3D MPR feature can be used to visualize the aortic valve. It became possible only with our latest version that allows to reconstruct volumes in arbitrary planes.

https://www.youtube.com/watch?v=CSgp4LANHtU
3D MPR/MIP/MinIP/Avg is here
by RadiAnt on December 20, 2016
As 2016 comes to an end, we have a new beta version for you with another long awaited major feature - 3D MPR viewer. It lets you view the cross-section of the volume in an arbitrary plane. You can also increase the thickness of a slab in MIP (maximum intensity projection), MinIP (minimum intensity projection) and Average modes. It still lacks some UI controls, however, the core functionality is almost there and we'll be very happy if you give it a try!

We also have a maintenance stable release (3.4.2) with some small improvements and bug fixes, you can download it here.

The RadiAnt Team would like to wish you the gift of good cheer this holiday season and may it stay with you throughout the coming year!
RadiAnt DICOM Viewer 3.4.1
by RadiAnt on September 19, 2016
In this new version we have implemented manual series synchronization. Now you are able to synchronize two or more series coming from different studies. This feature can be also useful when patient's position differs within series of the same study.

Additionally, automatic synchronization mode was improved - now it can work for series with similar (but non-parallel) planes forming the dihedral angle up to 5 degrees. This is often the case with the MR studies.

We've enhanced the DICOM tags window, you can search all DICOM elements for a specific text. You can also quickly show the displayed DICOM file in Windows Explorer.

Last but not least, there are a few bug fixes and performance improvements.

Download RadiAnt DICOM Viewer 3.4.1
RadiAnt DICOM Viewer 3.3.5 BETA
by RadiAnt on August 21, 2016
We have a new beta version for you which features manual series synchronization with a separate toolbar button for toggling the synchronization mode. Alternatively, you can use the F5 key.

We also made the thumbnail image generation faster for series located in the same folder (only if the DICOMDIR file is present).

Click for more info.
RadiAnt DICOM Viewer 3.1.10 BETA
by RadiAnt on May 9, 2016
This new beta version brings support for the encapsulated PDF documents and the MPEG-2 and MPEG-4 transfer syntaxes.

There's also a new measurement tool - "Deviation", it can be used to show the horizontal or vertical distance between two points, e.g. the height difference between femoral heads.

Click for more info.
RadiAnt DICOM Viewer 3.1.7 BETA
by RadiAnt on April 29, 2016
This new beta versions brings keyboard customization to RadiAnt. The preferred shortcuts can be also assigned to commands that were previously not associated with any keys, like the split screen presets for example.

There are also some improvements to the PACS client feature - you can search a combination of PACS locations instead of one or all. The check selection list is used for the modalities, too. However, not all servers accept mixed modality searches.

Read more: http://www.radiantviewer.com/dicom-viewer-forum/radiant-dicom-viewer-3-1-5-beta/683
RadiAnt DICOM Viewer 3.0.2
by RadiAnt on April 17, 2016
Here comes the 3D Volume Rendering feature! Download the new version, RadiAnt DICOM Viewer 3.0.2 and enjoy the interactive volume exploring now.

Read more about this cool new tool in our updated manual.

As always, there are some other minor improvements.
RadiAnt DICOM Viewer 2.9.2 BETA
by RadiAnt on March 7, 2016
In this version we added the length measurement tool in the volume rendering window. You can also save the VR image as a JPEG file or copy it to the Windows clipboard. There are also some stability improvements.

Please go to our Beta Program page for more information.
Volume Rendering on Microsoft Surface Pro 4
by RadiAnt on January 29, 2016
We prepared a short video showing how the capabilities (multi-touch and pen support) of Microsoft Surface Pro 4 can make Volume Rendering a breeze, with RadiAnt DICOM Viewer, of course :-) https://www.youtube.com/watch?v=za5i7bX6nV4
RadiAnt DICOM Viewer 2.7.8 BETA
by RadiAnt on December 21, 2015
We would like to wish all our users a Merry Christmas, Happy Holidays or whatever you celebrate in your part of the world and a Happy New Year!

On this occasion we have a small gift for you - the new beta version with a refined Volume Rendering feature. Please check our beta program page for more details: Beta Program.
RadiAnt DICOM Viewer 2.7.4 BETA
by RadiAnt on November 11, 2015
We have another beta version for you today. This time the orientation cube and the camera angles were added to better understand directions in the VR window.

Please go to our Beta Program page for more information.
RadiAnt DICOM Viewer 2.7.1 BETA
by RadiAnt on October 18, 2015
Today we're releasing a new beta version with the Volume Rendering feature and the long-awaited support for SR Documents (Structured Reports).

Please go to our Beta Program page for more information.
RadiAnt DICOM Viewer 2.0.9
by RadiAnt on September 22, 2015
We are happy to announce that the public release version of RadiAnt DICOM Viewer with the PACS client feature is now ready for download!

The list of changes for this version is available here.

As always, we will appreciate your feedback.
RadiAnt DICOM Viewer 2.0.5 RC
by RadiAnt on September 2, 2015
According to the DICOM standard, every conformant PACS host should support the default transfer syntax, which is Implicit VR Little Endian [1.2.840.10008.1.2]. However, thanks to our beta testers we found out that this is not always the case.

Some systems don't respect the default transfer syntax and require others for successful transfers. That's why in the latest release candidate version we've added support for multiple transfer syntaxes in PACS communication: Implicit VR LE, Explicit VR LE, Explicit VR BE, JPEG Lossless, JPEG LS Lossless, JPEG 2000 Lossless, JPEG Baseline, JPEG Extended, JPEG LS Lossy, JPEG 2000 Lossy, RLE.

The preferred transfer syntax can be set for each host. Hopefully this version resolves those rare issues with non-conformant PACS nodes.

See the changlog and download info.
RadiAnt DICOM Viewer ready for Windows 10!
by RadiAnt on June 24, 2015
With Windows 10 just around the corner, we have been testing our viewer using Windows 10 Insider Preview version and can confirm that RadiAnt DICOM Viewer is fully compatible with the new operating system from Microsoft arriving in July.
RadiAnt DICOM Viewer 1.99.39 BETA
by RadiAnt on June 12, 2015
We're happy to announce a new RadiAnt with PACS client BETA version which hopefully will please many of you. Finally, the missing functionality is restored, you can now open several RadiAnt windows concurrently. Each window can be used to open different (or the same) studies. There are still some minor glitches that need to be resolved but a public release version seems to be closer than ever. Check our discussion forum for the full changelog.

Download it here: RadiAnt DICOM Viewer Beta Version

Please keep in mind that RadiAnt BETA versions expire even if a paid license key is installed.
RadiAnt DICOM Viewer 1.99.35 BETA
by RadiAnt on May 27, 2015
This time we have a few fixes in the PACS client BETA version:
  • Fixed rare failure in connection to some PACS devices.
  • Fixed ocassionally interrupted PACS downloads (e.g. with Orthanc PACS server).
  • Fixed bug that caused PACS search window to show duplicate studies.
  • Fixed recently introduced bug that caused some type of CR images to appear in negative.
  • Added optional error logging capability to help resolve communication problems with PACS devices.

Download it here: RadiAnt DICOM Viewer Beta Version

Please keep in mind that RadiAnt BETA versions expire even if a paid license key is installed.
RadiAnt DICOM Viewer 1.99.27 BETA
by RadiAnt on May 10, 2015
We have uploaded another beta version with PACS client functionality. This time fixes and improvements to the export feature were applied. The speed of export in a 32-bit version should increase significantly.

Download it here: RadiAnt DICOM Viewer Beta Version

Please keep in mind that RadiAnt BETA versions expire even if a paid license key is installed.
RadiAnt on Mac
by RadiAnt on April 14, 2015
We've already confirmed that RadiAnt, even though being a native Windows application, can run successfully on Linux. But how about Mac OS X? There's a Mac version of the necessary emulation package, Wine, so why not give it a try...

So we did give it a try. You can watch the result in this short movie: https://www.youtube.com/watch?v=9Tbo7RUTv_4 Spoiler warning! RadiAnt DICOM Viewer can run on Mac computers :-)
RadiAnt on Linux
by RadiAnt on April 11, 2015
RadiAnt was developed only for Windows platform but it appears that it can also run on Linux systems with just a little help from the Wine package.

Although platforms other than Windows are not officially supported, we present a video tutorial how to install RadiAnt DICOM Viewer on Linux (Ubuntu 14.10 Desktop 64-bit).

https://www.youtube.com/watch?v=YiUgMQ-D3Vk
Happy New Year!
by RadiAnt on December 31, 2014
With 2015 here, we have the best wishes for all RadiAnt users and a short video with a preview of a feature that is coming to RadiAnt DICOM Viewer soon. Enjoy!

https://www.youtube.com/watch?v=XVMxbScbeBs
RadiAnt DICOM Viewer 1.99.20 BETA
by RadiAnt on December 22, 2014
This is an updated beta version with PACS client functionality.

The "split series" feature was added to this release. It detects multiple volumes contained in one series (e.g. arterial/venous post-contrast, DWI, cardiac CT multi-phase) and opens them in separate panels. Also, the validity period has been prolonged.

Download it here: RadiAnt DICOM Viewer Beta Version

Please keep in mind that RadiAnt BETA versions expire even if a paid license key is installed.
RadiAnt DICOM Viewer 1.99.19 BETA
by RadiAnt on August 19, 2014
This is an updated beta version with PACS client functionality. There are some small improvements in this release. Also, the validity period has been prolonged.

Download it here: RadiAnt DICOM Viewer Beta Version

Please keep in mind that RadiAnt BETA versions expire even if a paid license key is installed.
RadiAnt DICOM Viewer 1.9.16
by RadiAnt on June 22, 2014
Just in case you missed it - recently we released a new version of RadiAnt DICOM Viewer.

This version (1.9.16) is a maintenance release that brings improved handling of SPECT-CT studies (synchronization, MPR, fusion). There are also other small improvements and fixes.

It is available for download here.
RadiAnt DICOM Viewer 1.99.18 BETA
by RadiAnt on May 22, 2014
This is the moment that many RadiAnt users (including us) waited for. We are proud to announce that the BETA version with PACS client functionality is now available for public download.

So grab it now here and share your comments in our discussion forum.

You can also have a look at this short screencast showing basic configuration, searching and downloading studies from a PACS server.
PACS beta enrollment begins
by RadiAnt on February 26, 2014
Pretty soon we will have a first beta version of RadiAnt DICOM Viewer with Query&Retrieve PACS functionality ready for testing.

Let us know if you want to participate in this closed beta phase, using this form.

Please specify the name(s) of PACS server/workstation/other devices that you will connect to with RadiAnt.
RadiAnt DICOM Viewer 1.9.14
by RadiAnt on January 19, 2014
The latest 1.9.14 version is a maintenance release.

We fixed some issues with the display of pretty rare types of DICOM images (compressed PALETTE COLOR images, a variation of DICOM files with big endian transfer syntax).

Download the new version here.
Merry X-mas!
by RadiAnt on December 21, 2013
We would like to take this opportunity to wish you a joyful holiday season and a happy, healthy and prosperous New Year.

Thank you for choosing RadiAnt DICOM Viewer -- we hope to continue to improve it and to introduce many new features in 2014 and beyond!
RadiAnt DICOM Viewer 1.9.10
by RadiAnt on November 7, 2013
This time we have a few improvements in version 1.9.10:

Download the new version here.
RadiAnt DICOM Viewer 1.9.4
by RadiAnt on September 29, 2013
The latest version – 1.9.4 - introduces two new features:

There are also a few changes to the structure of the CD/DVD version.
And, as usually, a few minor improvements and bug fixes.

Download the new version and check the complete list of changes here.
User manual
by RadiAnt on June 30, 2013
When we started developing RadiAnt DICOM Viewer we had one goal in mind, to keep it as simple as possible. This is probably why we kept on procrastinating on writing a user manual for our software.

Well, that is, until today. Because today we are presenting you a complete user guide which hopefully will help you get the most out of RadiAnt DICOM Viewer.

The manual is available as a searchable online help or a PDF file for downloading and printing.

Enjoy the reading!
RadiAnt DICOM Viewer 1.8.6
by RadiAnt on June 2, 2013
We are happy to announce a new release version of RadiAnt DICOM Viewer - 1.8.6
There are two major new features: multi-touch support for Windows 8 and time-intensity curves. The biggest improvement in our opinion is much faster CD/DVD loading, in certain cases up to 3x faster than in previous versions.

Below you will find a list of new features:
  • Multi-touch support for Windows 8 touch-enabled devices:
  • Use one finger to browse images of the series (or perform other function selected from the toolbar).
  • Use two fingers to pan and zoom (pinch) images.
  • Use three fingers to change window settings (brightness/contrast).
  • Time-Intensity Curve generation (CTRL + SHIFT + E).
  • Export files in DICOM format.
  • Zoom & pan synchronization.
  • Window settings (WW/WL) synchronization.
  • New controls for Cine mode, overlayed at the bottom of the screen when mouse hovers over image.
  • Cine auto start for US and XA series.
  • Edit ROIs:
  • Copy selected ROI (CTRL + C)
  • Copy all ROIs in displayed image (CTRL + SHIFT + C)
  • Paste ROI(s) in the same or in different image (CTRL + V)
  • Duplicate ROI in corresponding series (CTRL + SHIFT + D)
  • Duplicate ROI in all images of the series (SHIFT + ALT + D)
  • Delete ROIs in all visible images (SHIFT + DEL)
  • Open quickly multiple series (F4).
  • Change color scale in fusion images (click color bar).
  • Change fused image opacity (left mouse button down and drag over color bar).
  • Maximize/restore panel (button/double click on image/CTRL + M), you can switch between opened series in maximized panel using TAB.
  • Anonimize all visible patient data (SHIFT + F12).
  • Tools can be assigned to the middle mouse button (with WL/WW adjustment default).
  • Open DICOM folder in RadiAnt using right-click context menu on a folder in windows explorer.
  • Command line parameter -b shows expanded folder tree, lets user choose a subfolder to be scanned for DICOM files.
  • New command-line parameter "-cl" closes all running instances of RadiAnt DICOM Viewer.

Improvements and bug fixes:
  • Significant reduction of CD/DVD loading times (up to 3x faster).
  • Improved multiframe DICOM file reading from CD/DVD.
  • Detection of CD/DVD/Flash removal.
  • Toggle series preview bar visibility (CTRL+SHIFT+F4).
  • Toggle toolbar and status bar visibility (CTRL+SHIFT+F3).
  • Toggle ROI visibility (ALT+F12).
  • Change ROI label font size (CTRL+SHIFT+PLUS/MINUS).
  • Hold SHIFT during ellipse drawing to make it a circle, hold it while drawing a segment to make it horizontal or vertical.
  • Hold CTRL during ellipse drawing to show actual DICOM pixels area (only when image is magnified).
  • Ellipse ROI label shows actual DICOM pixels number used for calculations.
  • Close all panels (SHIFT + F4).
  • Click panel close button with CTRL pressed to clear the panel instead of closing it.
  • Options.xml file (ProgramData/RadiAntViewer folder in Windows7) - change default options (currently only by manual editing).
  • Zoom-to-region mode for zooming tool (available in options.xml).
  • Off-center zooming (retains desired image region visibility during zooming - available in options.xml).
  • Scroll wrapping can be disabled in options.xml file.
  • Added WW/WL presets for modalities other than CT.
  • Status bar shows remaining files during folder scan.
  • Displayed info about lossy compression of DICOM images (left top corner, below series number).
  • CTRL + C copies value to clipboard in DICOM tags window.
  • Improved support for images with VOI LUT defined.
  • Fixed a rare crash caused by images with "RAW" modality.
  • Fixed display of certain US images (e.g. Philips US systems, GE Vivid 7).
  • Fixed default cine rate setting (FPS).
  • Fixed problem with opening zip files that have non-standard characters in a filename.
  • Compatibility with Windows Server 2008 system was improved by removing the dependency on wmvcore.dll library.
  • Other minor features and bug fixes.

Download here
RadiAnt DICOM Viewer 1.7.7 BETA
by RadiAnt on May 1, 2013
RadiAnt is believed to be a speedy DICOM viewer. Well, we tried hard and made it even faster - CD/DVD loading times can be up to about 3 times faster than before. Download our latest beta version and try for yourself!

New features and improvements:
  • Significant reduction of CD/DVD loading times (up to 3x faster).
  • Pet20 color scale.
  • Displayed info about compressed DICOM images (left top corner, below series number).
  • CTRL + C copies value to clipboard in DICOM tags window.
  • Scroll wrapping can be disabled in options.xml file.
  • Detection of CD/DVD/Flash removal - to remedy problems with opening consecutive CDs without restarting RadiAnt.
  • New command-line parameter "-cl" closes all running instances of RadiAnt DICOM Viewer.
  • Further refinements in large multi-frame files handling.
  • Fixed problem with opening zip files that have non-standard characters in a filename.
  • Other small fixes.

Download here
RadiAnt DICOM Viewer 1.5.10 BETA
by RadiAnt on April 6, 2013
Our latest beta version brings these new features and improvements:
  • New controls for CINE, overlayed at the bottom of the screen when mouse hovers over image.
  • Cine auto start for US and XA series.
  • Improved multiframe DICOM file reading from CD/DVD.
  • Toggle series preview bar visibility (CTRL+SHIFT+F4)
  • Toggle toolbar and status bar visibility (CTRL+SHIFT+F3)
  • Toggle ROI visibility (ALT+F12)
  • Change ROI label font size (CTRL+SHIFT+PLUS/MINUS)
  • Fixed patient data anonimization in series preview bar hints.

Download here
RadiAnt DICOM Viewer 1.5.7 BETA
by RadiAnt on March 16, 2013
This time we have a small update:
  • Open quickly multiple series (F4).
  • Close all panels (SHIFT + F4).
  • Open DICOM folder in RadiAnt using right-click context menu on a folder in windows explorer.

Download here
RadiAnt DICOM Viewer 1.5.5 BETA
by RadiAnt on March 1, 2013
We have a new beta version with a few improvements:
  • Tools can be assigned to the middle mouse button (with WL/WW adjustment default).
  • Command line parameter -b shows expanded folder tree, lets user choose a subfolder to be scanned for DICOM files.
  • ROI can be duplicated in all images of the series.
  • Source images with ellipse ROI used for calculations are added to the series with a time-intensity curve.
  • Other minor features and bug fixes.

Download here
RadiAnt DICOM Viewer 1.5.1 BETA
by RadiAnt on January 16, 2013
In this version we have implemented multi-touch support for Windows 8 touch-enabled devices:
  • use one finger to browse images of the series
  • use two fingers to pan and zoom (pinch) images
  • use three fingers to change window settings (brightness/contrast)

Also, compatibility with Windows Server 2008 system was improved by removing the dependency on wmvcore.dll library.

As always, we will appreciate your comments and suggestions!
Download here
RadiAnt DICOM Viewer 1.3.9 BETA
by RadiAnt on November 18, 2012
This time a few new features and improvements:

  • Time-Intensity Curve generation (CTRL + SHIFT + E).
  • Zoom & pan synchronization.
  • Window (WW/WL) synchronization.
  • Synchronization settings in split screen button popup menu.
  • Duplicate ROI in corresponding series (CTRL + SHIFT + D).
  • Delete ROIs in all visible images (SHIFT + DEL).
  • Status bar shows remaining files during folder scan.
  • Change color scale in fusion images (click color bar).
  • Change fused image opacity (left mouse button down and drag over color bar).
  • Maximize/restore panel (button/double click on image/CTRL + M), you can switch between opened series in maximized panel using TAB.
  • Click panel close button with CTRL pressed to clear the panel instead of closing it.
  • Anonimize all visible patient data (SHIFT + F12).
  • Added WW/WL presets for modalities other than CT.
  • Hold CTRL during ellipse drawing to show actual DICOM pixels area (only when image is magnified).
  • Ellipse ROI label shows actual DICOM pixels number used for calculations.
  • Options.xml file (ProgramData/RadiAntViewer folder in Windows7) - change default options (currently only by manual editing).
  • Zoom-to-region mode for zooming tool (available in options.xml).
  • Off-center zooming (retains desired image region visibility during zooming - available in options.xml).
  • Other minor improvements and bug fixes.

We will appreciate your comments and suggestions!
Download here
RadiAnt DICOM Viewer 1.1.8 released
by RadiAnt on September 4, 2012
Improvements and bug fixes:

  • Better support for the new enhanced multi-frame DICOM CT and MR files - measurements, default window parameters, auto synchronization, cross reference lines, MPR and image fusion.
  • SD (standard deviation) calculation in ellipse ROI.
  • Fixed issue with ellipse ROI calculations in fusion MPR (coronal and sagittal) images.
  • Faster DICOM load and export times.
  • Better memory management.
RadiAnt DICOM Viewer 1.1.3 BETA
by RadiAnt on August 15, 2012
This version features better support for the new enhanced multi-frame DICOM CT and MR files - measurements, default window parameters, auto synchronization, cross reference lines, MPR and fusion should now work properly.

We also improved significantly performance of a 32-bit version while reading and exporting large number of DICOM files (an export performed on our >100000 files database was 5 times faster than in 1.0.4 version).

One small addition is SD calculation in ellipse ROI.

Download here: RadiAnt DICOM Viewer Beta Version
RadiAnt DICOM Viewer ready for Windows 8!
by RadiAnt on August 9, 2012
With Windows 8 just around the corner, we have been testing our viewer using Windows 8 Release Preview version and can confirm that RadiAnt DICOM Viewer is fully compatible with the new operating system from Microsoft arriving in October.

Once Windows 8 tablets are available to customers, we will update RadiAnt DICOM Viewer to fully utilize multi-touch gestures. Only tablets with Intel CPUs (Microsoft Surface Pro, Lenovo ThinkPad Tablet 2, etc.) will be supported because RadiAnt is a Desktop Application and cannot run on ARM devices.
RadiAntViewer.com gets a major redesign
by RadiAnt on May 9, 2012
We have been working for a few weeks on a refreshed version of our website. Yesterday we pushed it live.

We hope that you will like it, along with our new ant :-) Your feedback is greatly appreciated.
RadiAnt DICOM Viewer 1.0.4 released
by RadiAnt on April 30, 2012
New features:

  • Multiplanar reconstructions.
  • PET-CT fusion (other types of images can be also fused, e.g. DWI and conventional MRI sequences).
  • Screen splitting with a predefined column/row number (drag and drop series thumbnail images into viewports).
  • DICOM tags inspection window.
  • Angle measurement.
  • Cobb angle measurement.

Improvements and bug fixes:

  • The autorun package for CD/DVD contains both 32 and 64 bit versions.
  • More keyboard shortcuts (series navigation - Home/End, tool selection - C/B/M/W/Z).
  • Middle mouse button adjusts window level/width.
  • Auto synchronization on/off switch.
  • Display cross-reference lines on/off switch.
  • Ellipse tool shows minimum and maximum values in covered area.
  • ROIs drawn with an outline for better visibility on brighter backgrounds.
  • Movable ROI text labels.
  • More zoom presets added - 200, 400 and 800%.
  • The installer supports silent setup mode.
  • Crash reporting tool.
  • Improved look of certain dialog windows when using non-standard DPI settings.
  • Support for PALETTE COLOR DICOM images.
  • Improved support for JPEG DICOM images.
  • Other minor features and many bug fixes.
RadiAnt DICOM Viewer 1.0.4 Release Candidate
by RadiAnt on April 14, 2012
Finally, a release candidate version is here!
We will appreciate if you download it and try the features we have developed since the 0.50 version:
  • Multiplanar reconstructions.
  • PET-CT fusion (other types of images can be also fused, e.g. DWI and conventional MRI sequences).
  • Screen splitting with a predefined column/row number (drag and drop series thumbnail images into viewports).
  • DICOM tags inspection window.
  • Angle measurement.
  • Cobb angle measurement.
  • Other minor features and many bug fixes.
RadiAnt DICOM Viewer Development Update
by RadiAnt on March 20, 2012
We're getting close to the 1.0 Release Candidate version. Yesterday we published the 0.99 beta release, available for download here. This beta version is valid for the next 3 months.

The following major features were added since the 0.50 version:
  • Multiplanar reconstructions.
  • PET-CT fusion (other types of images can be also fused, e.g. DWI and conventional MRI sequences).
  • Screen splitting with a predefined column/row number (drag and drop series thumbnail images into viewports).
  • DICOM tags inspection window.
  • Angle measurement.
  • Cobb angle measurement.

Other minor features and bug fixes will be detailed in the public Release Candidate version.
As always, your feedback is most welcome!
RadiAnt DICOM Viewer Development Update
by RadiAnt on December 20, 2011
It's been over three months since we released last official version of RadiAnt. We developed two major features during this time. You can watch preview videos on youtube:

1) Multiplanar reconstructions: www.youtube.com/watch?v=Eq_k_hOVqXw
2) PET-CT fusion (other types of images can be also fused, e.g. DWI and conventional MRI sequences): www.youtube.com/watch?v=PAJvP4EHHi4

The beta version is scheduled for late January/early February.
RadiAnt DICOM Viewer 0.50 released
by RadiAnt on September 2, 2011
New features:
  • Export to movie files (WMV).
  • Export all opened series at once.
  • Support for DICOM overlays.
  • Show/hide annotations using button or shortcut (F12).

Improvements and bug fixes:
  • Faster image operations (zooming, panning) and lowered memory usage, especially with larger (CR, DX, MG) images.
  • Date and time formatted using local system settings.
  • Zooming using Ctrl + Mouse Wheel.
  • Menu items for adding images to the thumblist without clearing it.
  • DMZ files (zipped DICOMs) association with RadiAnt.
  • ZIP files can be opened from Explorer using right click and "Open with" menu item.
  • Improved CINE display efficiency (interface was freezing with multiple cine runs at the same time).
  • Improved drag and drop (zip files, drop on the RadiAnt icon).
  • Improved patient sorting in the thumblist.
  • Improved drawing of certain types of images (e.g. dose reports).
  • Improved color images display.
RadiAnt DICOM Viewer 0.40 released
by RadiAnt on June 30, 2011
New features:
  • Image transformations: rotation and flips.
  • Drag and drop DICOM files, folders, zip archives into the RadiAnt window.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.36 released
RadiAnt Online Store launched
by RadiAnt on June 5, 2011
RadiAnt DICOM Viewer 0.36 improvements and bug fixes:
  • Certain color images weren't displayed properly.
  • During export with disabled annotations there were still rulers and direction overlays on images.
  • Holding SHIFT while opening folder for scanning prevents RadiAnt from clearing thumbnails of previously opened series.
  • New About window shows license details.
  • Installer detects running RadiAnt and automatically terminates process so no reboot is necessary.
  • Other minor improvements and bug fixes.

We've been receiving inquiries about RadiAnt commercial licensing for some time. This is why we launched RadiAnt Online Store. If you would like to use RadiAnt in a commercial setting, we invite you to https://store.radiantviewer.com
RadiAnt DICOM Viewer 0.35 released
by RadiAnt on March 19, 2011
New features:
  • Loading DICOM files directly from compressed ZIP archive.
  • Pencil tool (e.g. to highlight a region during presentation).
  • New language - Hungarian (translation by Kozák Zsolt).

Improvements and bug fixes:
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.30 released
by RadiAnt on February 5, 2011
New features:
  • Multiple series viewing support (hold Ctrl key and click a thumbnail to open desired series in new panel).
  • Auto series synchronization.
  • Cross reference lines.
  • Negative mode (F11).
  • Full screen mode (press F to toggle between window and full screen mode).
  • Darker, subdued interface - to help you focus on images.
  • New languages - now there are 15 translations available: Brazilian Portuguese, Bulgarian, Chinese, Czech, Danish, Dutch/Flemish, French, German, Italian, Polish, Russian, Serbo-Croatian, Spanish, Swedish, Turkish.

Improvements and bug fixes:
  • Improved DICOM engine and memory management - even 32-bit version can open multiple series totalling over 10000 images .
  • Angiographic angles (LAO, RAO, CRA, CAU) and patient's sex displayed in annotations.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.19 released
by RadiAnt on August 7, 2010
New features:
  • New languages: French (Philippe SCHÄCK), Dutch/Flemish (Patrick Cleys), Russian (Farabef - radiographia.ru). Updated: Italian (Sebastiano Amato). Thank you!
  • Select and open specific DICOM files (Ctrl + O).
  • Association with *.DCM files (double click DICOM file to open it in the viewer).
  • Command-line arguments (-d and -f) support (radiantviewer.exe -d folder1 folder2 folder3 etc. and -f file1 file2 file3 etc.) to open specified files/folder after startup.
  • Optional company logo/info image in license window (CD/DVD version).
  • Automatic update checking (optional).
  • Installer with unicode support.
  • New page with options in the installer - association with *.dcm files, automatic updates, shortcuts.
  • Binary files (exe, dll) are now digitally signed using Microsoft Authenticode certificate.

Improvements and bug fixes:
  • Improved support for JPEG compressed DICOM files.
  • Improved memory management.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.18 released
by RadiAnt on June 26, 2010
New features:
  • Multilingual support (English, German, Italian and Polish languages included in setup).
  • Online translation creator available.
  • TAB key shows/hides annotations.
  • Slice location and thickness for CT and MR modalities.
  • Ctrl + C copies displayed image to clipboard.
  • Main window size and position is remembered and restored at startup.

Improvements and bug fixes:
  • Improved compatibility with certain types of dicom files.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.17 released
by RadiAnt on May 15, 2010
New features:
  • Ellipse tool for mean value (density) and area measurement.

Improvements and bug fixes:
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.16 released
by RadiAnt on April 19, 2010
New features:
  • Export DICOM images to JPEG and BMP files.

Improvements and bug fixes:
  • Cine FPS adjustment.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.15 released
by RadiAnt on March 26, 2010
Improvements and bug fixes:
  • The installer requests admin privileges (UAC prevented setup from writing to Program Files folder).
  • In certain situations black stripe appeared at the bottom of the viewport.
  • Corrected issues with image downsampling.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.14 released
by RadiAnt on March 16, 2010
Improvements and bug fixes:
  • New shortcuts: CTRL + DEL (deletes all measurements in current image) and CTRL + SHIFT + DEL (deletes all measurements in current series).
  • Window preset name is displayed next to window level and length.
  • New toolbar icons.
  • Thumbnails and toolbar were not redrawn sometimes.
  • Annotations drawing corrected.
  • Other minor improvements and bug fixes.
Website improvements
by RadiAnt on March 12, 2010
Compatibility with older browsers (IE5.5, IE6.0, IE7.0) was enhanced.
RadiAnt DICOM Viewer 0.13 released
by RadiAnt on March 9, 2010
Improvements and bug fixes:
  • Refinements in image thumbnails (improved legibility in Windows XP).
  • Cine button not working properly.
  • Other minor improvements and bug fixes.
RadiAnt DICOM Viewer 0.12 released
by RadiAnt on March 7, 2010
New features:
  • CD/DVD/Flash standalone version available
  • "About RadiAnt DICOM Viewer" window
New website look
by RadiAnt on March 5, 2010
We took some time to redesign RadiAnt DICOM Viewer homepage. Hopefully the new layout is easier to navigate and looks better than previous, temporary design. A simple manual was also added (currently it contains keyboard shortcuts list).
RadiAnt DICOM Viewer 0.11 released
by RadiAnt on March 3, 2010
Improvements and bug fixes:
  • After setting zoom to 100% significant performance decrease with large images was experienced.
  • Other minor improvements and bug fixes.