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RadiAnt DICOM Viewer - Version History
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RadiAnt DICOM Viewer 2024.1
built on April 5, 2024
New features:
  • Anonymize DICOM files (add-on package).
  • Rectangle/square ROI tool.

Improvements and bug fixes:
  • Browse to the previous/next group of series when viewing multiple series side by side (Alt + Left/Right arrow).
  • Export studies from a local archive to another one.
  • 3D MPR and 3D VR windows keep their position / full screen state / layout after restart.
  • Date/time tags defined in the overlay.xml file are formatted according to the local system settings.
  • Improved import of add-on extensions.
  • Added support for High-Throughput JPEG 2000 transfer syntax.
  • Added optional CP950 and CP936 Windows character sets (they can be defined in the options.xml file).
  • "Hide patient data" removes also patient birthday from the series preview bar.
  • Ultrasound length measurements are now consistent with other modalities (precision and unit).
  • Improved search in the DICOM tags window.
  • DICOM dictionary updated to 2023d.
  • Fixed issues with zoom & pan reset while browsing tomosynthesis series.
  • Fixed issue with disappearing measurements after switching series in 2D viewer.
  • Fixed window adjustment for certain RGB images not fully compliant with DICOM standard.
  • Fixed missing length measurements for some obscure DICOM images.
  • Fixed rare case of a broken association with a PACS server.
  • Fixed rare crash caused by incorrect JPEG DICOM images.
  • Fixed occasional crashes when sending DICOM images to PACS.

RadiAnt DICOM Viewer 2023.1
built on March 29, 2023
New features:
  • Length ratio calculation.
  • Ellipsoid / bullet volume calculation.
  • Added option to color and/or pin specific items to top in the DICOM tags window.

Improvements and bug fixes:
  • Search local archive using multiple keywords (separated by |).
  • Added option to append birth date to patient name in the PACS search window (e.g., NAME|YYYYMMDD or NAME|YYMMDD or NAME|YYYY).
  • Added support for certain DICOM files not fully compliant with the standard.
  • Added support for some uncommon DICOM images with JPEG 2000 encoding.
  • Added support for Windows-1251 code page in PACS search queries and results.
  • Added option to force a specific character set when displaying PACS search results.
  • Added option to replace non-ASCII characters with wildcards in PACS search queries.

RadiAnt DICOM Viewer 2022.1.1
built on August 17, 2022
Improvements and bug fixes:
  • Added support for certain US images encoded with JPEG YBR.
  • Fixed rare activation issue.

RadiAnt DICOM Viewer 2022.1
built on July 23, 2022
Improvements and bug fixes:
  • Image position, zoom, rotation and flip is restored when switching series.
  • Added support for long file paths.
  • Added support for certain DICOM images not fully compliant with the standard.
  • Improved distraction free mode.
  • Fixed rare activation failure.
  • Other small improvements and bug fixes.

RadiAnt DICOM Viewer 2021.2.2
built on January 19, 2022
Improvements and bug fixes:
  • Added support for certain DICOM images not fully compliant with the standard.
  • Fixed rare issues with distorted 3D reconstructions and measurements for certain DICOM files not fully compliant with the standard.

RadiAnt DICOM Viewer 2021.2
built on October 24, 2021
New features:
  • Distraction free mode (Alt + Shift + Enter).

Improvements and bug fixes:
  • Added support for certain DICOM images not fully compliant with the standard.
  • Added support for DICOM images with pixel data stored in 32-bit cells.
  • Improved naming of folders when exporting all series (added patient ID, changed date formatting).
  • Fixed display for certain US images with JPEG YBR compression.
  • Fixed rare issues with activation on non-standard systems.
  • Added option to create a keyboard shortcut for the "import zip to database" function.
  • Added shortcuts for deleting multiple ROIs in 3D MPR window (Ctrl + Del, Shift + Del).
  • Changed shortcut for refreshing PACS series to Ctrl + F5.

RadiAnt DICOM Viewer 2021.1
built on June 27, 2021
New features:
  • Send studies to PACS (add-on package).
  • CSV export in the local archive.

Improvements and bug fixes:
  • Added option to open quickly a series via context menu.
  • Added option to draw horizontal or vertical segments when using angle or Cobb angle tools while holding Shift.
  • Added option to hide DICOM overlays.
  • Added F5 shortcut to refresh the list of series in the PACS search window.
  • Added command line flag to show viewer in full screen mode (e.g. -wp 0 0 800 600 2)
  • Added option to set custom directions for WL/WW adjustments in options.xml.
  • For DICOM files with imager pixel spacing defined (e.g., CR/DX/XA), magnification factor is used for length measurements whenever possible. The length measurement's background color will turn blue if a radiographic magnification factor is applied (whereas for measurements at the detector plane, the color is purple).
  • Fixed issues with not fully DICOM compliant tomosynthesis images (Hologic).
  • Fixed issues with searching PACS by dates.
  • Fixed rare issue (white lines) with images having lossless JPEG compression.
  • Fixed WW/WL setting for certain images with VOI LUT defined.
  • Fixed issues with certain PALETTE COLOR images compressed with JPEG2000 lossless codec.
  • Removed support for Windows XP and Vista systems.

RadiAnt DICOM Viewer 2020.2.3
built on December 28, 2020
Improvements and bug fixes:
  • Improved "Split series" function for multi-sequence MR series.
  • Fixed rare issue with trial activation.

RadiAnt DICOM Viewer 2020.2.2
built on November 26, 2020
Improvements and bug fixes:
  • Fixed issue with study downloads via C-GET protocol.
  • Fixed issue with trial activation.
  • Fixed rare issue with the local archive when new imports might cause files of older studies be overwritten.

RadiAnt DICOM Viewer 2020.2
built on July 19, 2020
New features:
  • DSA mode (digital subtraction angiography) - auto and manual pixel-shift, split mask, magic mask.
  • Search and download specific image series from PACS locations.
  • Set custom window (WL/WW or Min/Max) with the option to use SUVbw units for PET images.
  • Custom window presets in 2D, 3D MPR and 3D VR viewers.

Improvements and bug fixes:
  • Added window presets (WL/WW) in 3D MPR mode.
  • Improved responsiveness during WW/WL adjustment for high resolution images (mammography, etc.)
  • Series miniature images are updated after loading to better represent series.
  • Improved performance when loading large number of series into viewer.
  • Improved performance when importing studies from PACS to a database located on a slow media (e.g., USB flash).
  • Fixed issue when after loading a series, an image other than the first one was shown.
  • Fixed occasional hangs in the database window during PACS downloads.
  • Fixed issues with radiant:// URL protocol.
  • Fixed STL export for certain volumes.
  • Added option to search and download via command-line multiple studies from PACS locations using tags other than StudyUID.
  • Other performance and stability improvements.

RadiAnt DICOM Viewer 2020.1.1
built on April 29, 2020
Improvements and bug fixes:
  • Performance and stability improvements.

RadiAnt DICOM Viewer 2020.1
built on March 9, 2020
New features:
  • Closed polygon tool - area, perimeter (2D, 3D MPR).
  • Open polygon tool - length (2D, 3D MPR).
  • Arrow tool (2D, 3D MPR, 3D VR).
  • Ellipse tool - area, min, max, avg (3D MPR).
  • Angle measurement tool (3D MPR).
  • Native 64-bit ARM version for Windows 10 on ARM platform (e.g., Microsoft Surface Pro X, Samsung Galaxy Book S, Lenovo Yoga 5G).

Improvements and bug fixes:
  • SUVbw measurements in 2D and 3D MPR viewers (no fusion required).
  • Stored last export settings.
  • Added option to show destination folder in Explorer after export.
  • Added option to import studies opened directly in the viewer to database.
  • Added option to export specific image series from the local database.
  • Added option to delete specific image series in the local database.
  • Added info about the displayed image series to the title bar text.
  • Added option to drop the 3D snapshots file onto the VR window to load it.
  • Added Ctrl+F1 shortcut to show the About box.
  • Improved rendering of structured reporting (SR) documents in the viewport - page breaks for longer content, XML/HTML tag stripping.
  • Custom character encoding can be set for SR documents in options.xml.
  • Changed version numbering scheme (YYYY.X.Z - YYYY: year of the public release, X: feature release number, Z: bugfix release number).
  • Added support for TIC generation for MR studies with multi-frame DICOM files.
  • Fixed PACS search presets button for Wine-based installations.
  • Fixed occasional crash during VR movie export.
  • Updated DICOM dictionary to 2020a.
  • New mouse button indicators (back and forward buttons added).
  • ESC deletes the unfinished measurement.

RadiAnt DICOM Viewer 5.5.1
built on December 13, 2019
Improvements and bug fixes:
  • Fixed issue with opening multiple viewer windows when in full screen mode.

RadiAnt DICOM Viewer 5.5.0
built on October 21, 2019
New features:
  • 3D snapshots for 3D VR views.
  • 3D VR movie creator (quick movies and 3D snapshot based videos).
  • Unlimited scalpel undo/redo in the 3D VR window.
  • Image filters (sharpen, smooth, edge...).

Improvements and bug fixes:
  • Improved fluidity in the 3D VR and MPR windows on NVIDIA GPUs (progressive rendering).
  • Added option to hide annotations and the orientation cube in the 3D VR window.
  • Added option to set the quality of rendering during interactions in the 3D VR and MPR windows (the Settings button).
  • Added support for extended mouse buttons (the forward button for ROIs / the back button for panning).
  • Added option to select multiple folders when opening/importing DICOM files.
  • Added option to disable horizontal mouse wheel (via options.xml).
  • Added option to configure viewer window position in options.xml.
  • Added option to export movies in MP4 format from 2D viewer.
  • Added support for certain not fully conformant JPEG compressed DICOM files.
  • Added Ctrl+Alt mouse modifier for 2D roll in VR window.
  • Added option set resolution during STL export.
  • Fixed STL export for large volumes.
  • Fixed several bugs causing crashes and hangs.

RadiAnt DICOM Viewer 5.0.2
built on September 18, 2019
Improvements and bug fixes:
  • Fixed several bugs causing crashes and memory leaks.

RadiAnt DICOM Viewer 5.0.1
built on June 29, 2019
Improvements and bug fixes:
  • Fixed TIC generation for studies acquired on certain scanners.

RadiAnt DICOM Viewer 5.0.0
built on April 25, 2019
New features:
  • Local archive - import DICOM studies from CD/DVD discs, USB flash drives, local and network folders or PACS servers, and store them on your computer in RadiAnt database.
  • Export 3D models to STL files.
  • Added support for password protected ZIP files (ZIP 2.0, AES-128, AES-192, AES-256).
  • Added the "Save RAW value" option in the DICOM tags window.

Improvements and bug fixes:
  • Improved mouse wheel behavior for precision devices (e.g., Surface Precision Mouse).
  • Changed the maximum split screen layout to 5x5.
  • Changed: the location overlay now shows the position of the center of frame for images with non-orthogonal orientation.
  • Added support for overlays with non-zero origin.
  • Added support for per-frame overlays in multi-frame DICOM files.
  • Added option to launch structured reporting documents in the external web browser (Ctrl + Enter).
  • Added option to display a logo image in the HTML SR documents (via options.xml).
  • Added support for SUV calculations in studies acquired with Siemens Biograph PET-CT.
  • Added support for TIC generation in studies acquired with Toshiba Vantage MRI.
  • Fixed several bugs causing crashes and memory leaks.
  • Other performance improvements.

RadiAnt DICOM Viewer 4.6.9
built on October 25, 2018
Improvements and bug fixes:
  • Added support for large volumes (>2GB) in 3D VR and MPR (64-bit version).
  • Improved support for breast tomosynthesis images (DBT).
  • Improved support for files that are not fully compliant with the DICOM standard.
  • Improved support for ultrasound images retrieved from Synapse PACS.
  • Fixed occasional crashing issues.

RadiAnt DICOM Viewer 4.6.5
built on May 23, 2018
New features:
  • GPU accelerated Volume Rendering and 3D MPR (MIP/MinIP/Avg) for NVIDIA graphics cards (available only in 64-bit version).
  • 3D presets (angio, airways, bones and skin, MIP, etc.) in the 3D Viewer window.
  • 3D cursor tool in the 2D Viewer window.

Improvements and bug fixes:
  • Added option to display studies pushed from PACS locations.
  • Added query timeout option for PACS connections.
  • Added configurable key modifiers and mouse button combinations for all tools.
  • Added option to disable/enable shading in the 3D VR
  • Added shortcut for hiding toolbar in the 3D VR and the 3D MPR windows (Ctrl + Alt + F3).
  • Added support for changing series with mouse wheel (horizontal scroll).
  • Added modality column to the "Open multiple series" window
  • Improved command line PACS integration - multiple studies/series/images can be downloaded with a single command.
  • Fixed image fusion for non-standard (non-orthogonal) orientations.
  • Fixed occasional crash when exporting WMV videos.
  • Fixed rare issue with transfer syntax negotiation with PACS servers.
  • Fixed crash when opening DICOM files with certain LUT Descriptor.
  • Fixed: some endemic DICOM files with certain private tags could not be opened.
  • Added support for not fully compliant DICOM JPEG files.

RadiAnt DICOM Viewer 4.2.1
built on November 19, 2017
New features:
  • C-GET protocol support for retrieving studies from PACS locations.
  • PACS search custom presets.

Improvements and bug fixes:
  • Fixed display of certain RGB lossy JPEG DICOM images.
  • Character set used in searches, wildcards and carets can be configured for each PACS location.
  • Warning message is displayed if Windows Firewall blocks PACS connections.
  • Added "Custom date" option to the PACS search window.
  • Configurable units and precision for length measurements (options.xml).
  • Added option to display a mark in the middle of a segment (options.xml).
  • Added option to display a mark in the center of an ellipse (options.xml).
  • Configuration files moved from AppData\Local to AppData\Roaming folder.

RadiAnt DICOM Viewer 4.1.6
built on October 1, 2017
Improvements and bug fixes:
  • Added quick search in the "Open series" window (F4) - comes handy when browsing a large collection of studies.
  • Added custom PACS search fields (via options.xml).
  • Added automatic online activation via command line: radcmd.exe -activateonline SERIALNUMBER.
  • Added support for radiant:// URL protocol (RadiAnt can be launched from a web browser and perform certain actions by clicking a link).
  • Added support for DICOM Deflated Little Endian Transfer Syntax (Explicit VR) (1.2.840.10008.
  • Improved series sorting in the "Open series" window (F4).
  • Improved VR/3D MPR support for multi-frame series.
  • Improved default WW/WL calculation for multi-frame images.
  • DICOM dictionary updated to 2017d.
  • Fixed: RGB images with incorrect WW/WL were not displayed properly.
  • Fixed: rare type of JPEG compressed images could not be opened.
  • Optimized memory management.

RadiAnt DICOM Viewer 4.0.3
built on June 10, 2017
New features:
  • 3D oblique MPR (Multiplanar Reconstruction) with MIP/MinIP/Avg modes (Maximum Intensity Projection / Minimum Intensity Projection / Average)

Improvements and bug fixes:
  • Images from non-volumetric series (CR, DX, MG, US, XA, etc.) can be split into separate panels
  • Setup improvements - installation is now possible for accounts without administrator privileges
  • New license activation system
  • Improved support for certain palette color DICOM images (US Philips)
  • Improved support for series of images without StudyUID or SOPInstanceUID
  • Improved support for certain files not fully compliant with the DICOM standard
  • Default DICOM character set can be overridden in the options.xml file
  • Language xml files are now checked for incorrect format specifiers
  • Added -fl command line parameter for loading DICOM files listed in a text file
  • Fixed silent installation mode
  • Fixed PACS downloads for DICOM MPEG2/4 videos
  • Fixed several bugs causing crashes and memory leaks

RadiAnt DICOM Viewer 3.4.2
built on December 8, 2016
New features:
  • Copy all visible panels to clipboard as one image.

Improvements and bug fixes:
  • Added support for certain type of ultrasound images (Aloka).
  • Added custom split screen setup via command line parameters (e.g. -sp 3 2) or the options.xml file.
  • Fixed: MPEG2/MPEG4 DICOM videos failed to download from PACS locations.
  • Fixed: JPEG compressed images could give linear artifacts in MPR views.
  • Fixed: MPR and VR features were not available for certain type of SPECT images.
  • Fixed window positioning via command line arguments.
  • Other minor improvements.

RadiAnt DICOM Viewer 3.4.1
built on September 13, 2016
New features:
  • Manual series synchronization (slice position, zoom&pan, window settings).
  • Separate toolbar button for changing synchronization mode.
  • New functionalities in the DICOM tags window: search text, copy all items, copy selected item, show DICOM file in explorer.
  • 3D Volume Rendering and 2D MPR now work with CT series acquired with tilted gantry.

Improvements and bug fixes:
  • Improved auto synchronization - non-parallel series with a dihedral angle up to 5 degrees are now synchronized automatically.
  • Fixed: the encapsulated MPEG videos were not opened properly without VLC installed.
  • Quicker series thumbnail generation when multiple series are located in one folder and the DICOMDIR file is present.
  • Other performance improvements.

RadiAnt DICOM Viewer 3.2.3
built on July 23, 2016
Improvements and bug fixes:
  • Sorting mode of studies in the series preview bar can be changed to "newest first" via options.xml file.
  • Fixed: cine loops exported to WMV files had sometimes incorrect frame rate.
  • Fixed: ejecting removable media could cause crash when the "import license" window was shown.

RadiAnt DICOM Viewer 3.2.2
built on June 1, 2016
New features:
  • Support for the encapsulated PDF documents (opened in an external viewer).
  • Support for the MPEG-2 / MPEG-4 DICOM files (opened in an external media player).
  • New measurement tool: Deviation.
  • Keyboard shortcuts customization (drop-down menu from the Help icon).

Improvements and bug fixes:
  • Added support for small values in the ellipse and length measurements.

RadiAnt DICOM Viewer 3.0.2
built on April 11, 2016
New features:
  • 3D Volume Rendering.

Improvements and bug fixes:
  • Added support for extended characters sets in PACS search result list (Chinese, Japanese, etc.)
  • Negative mode can be enabled by default for NM (Nuclear Medicine) images via the options.xml file.
  • Last export destination folder is remembered after closing RadiAnt.
  • Option to accept all presentation contexts during association with a PACS host.
  • Improved stability and efficiency.
  • Fixed: exported files are not overwritten during subsequent exports to the same folder.
  • Fixed: sometimes the PACS host's IP address was not resolved properly and the connection could not be established.
  • Fixed: a bad date in a DICOM file could cause RadiAnt crash.
  • Fixed: a specific type of JPEG LS compressed images was not displayed.

RadiAnt DICOM Viewer 2.2.9
built on December 27, 2015
Improvements and bug fixes:
  • Fixed issue that caused DICOM files retrieved from PACS locations and then exported in DICOM format sometimes could not be opened in other viewers.
  • Fixed issue with measurements showing 0mm in images obtained from Philips Achieva MRI scanner.

RadiAnt DICOM Viewer 2.2.8
built on December 1, 2015
Improvements and bug fixes:
  • Improved support for a specific type of DICOM images (HITACHI MRI).
  • Improved performance and stability.
  • Fixed a bug that sometimes caused incomplete PACS downloads.
  • Fixed a bug that could result in an unsuccessful association with a PACS peer.
  • Fixed a rare crash while scanning for DICOM files.

RadiAnt DICOM Viewer 2.2.5
built on November 18, 2015
Improvements and bug fixes:
  • Improved support for legacy DICOM overlays.
  • Fixed rare crashes on Windows 7 64-bit without SP1.
  • Fixed rare crashes on Windows XP 32-bit with older CPUs.

RadiAnt DICOM Viewer 2.2.4
built on November 13, 2015
Improvements and bug fixes:
  • Improved support for specific DICOM files (Philips Intera MRI, GE Optima MRI).

RadiAnt DICOM Viewer 2.2.3
built on November 1, 2015
New features:
  • Support for the SR (Structured Reporting) Documents.
    Press Enter to display a SR DICOM file in the HTML browser.

Improvements and bug fixes:
  • Improved stability, other small fixes.

RadiAnt DICOM Viewer 2.0.12
built on October 5, 2015
New features:
  • PACS client functionality - search and download studies from PACS servers/workstations/modalities.
  • New integration possibilities - command line parameters for searching and downloading studies from PACS nodes using specified DICOM tags.
  • "Split series" feature detects multiple volumes contained in one series (e.g. arterial/venous post-contrast, DWI, cardiac CT multi-phase) and opens them in separate panels.
  • "Duplicate window" feature (CTRL+SHIFT+N) - opens a new viewer window with the same image series as in the active window.
  • Series from the same study opened in multiple windows can now be synchronized and fused. Also, cross-reference lines are supported across multiple windows.
  • Dedicated window presets for PET modality (0.5, 1, 2.5, 5, 10, 25, 50 and 100 percent of the entire dynamic range of the displayed series).

Improvements and bug fixes:
  • In series consisting of multiple volumes (sequences), MPR is applied to the volume whose frame is currently displayed.
  • Improved display of PET images with small pixel values (especially those without attenuation correction).
  • Improved calculation of the default contrast/brightness values for PET images.
  • Default color look-up table for PET changed to Hot Iron.
  • Fixed MPR and Fusion functionality for special type of PET images (Siemens scanner).
  • Improved export of all opened series.
  • "Exit" menu item in popup menu under "Folder" toolbar button (Ctrl+Alt+F4). If multiple windows are opened, application can be also closed by pressing CTRL key while closing one of the RadiAnt windows.
  • RadiAnt is automatically restarted after new language is chosen or a license key is imported.
  • Enhanced support for compressed images.
  • Fixed display of rare ultrasound images.
  • Fixed drag&drop folder and files to RadiAnt running with admin privileges.
  • Under Windows XP, the Service Pack 3 is now required during setup.
  • Improved stability, lowered memory usage, other small fixes.

RadiAnt DICOM Viewer 1.9.16
built on May 23, 2014
Improvements and bug fixes:
  • Improved support for SPECT-CT studies (synchronization, MPR, fusion).
  • Improved automatic synchronization of series with small difference in patient orientation (e.g. MR).
  • Added support for a rare type of dicom files with little endian implicit transfer syntax.
  • Fixed ocassional crash of the viewer.
  • Other minor improvements.