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Brief Update: The latest version of Osirix 3.7.1 is now available as of today!

Please visit http://www.osirix-viewer.com to download it.

From the Source - About OsiriX...

OsiriX is an image processing software dedicated to DICOM images (".dcm" / ".DCM" extension) produced by imaging equipment (MRI, CT, PET, PET-CT, SPECT-CT, Ultrasounds, ...). It is fully compliant with the DICOM standard for image comunication and image file formats. OsiriX is able to receive images transferred by DICOM communication protocol from any PACS or imaging modality (C-STORE SCP/SCU, and Query/Retrieve : C-MOVE SCU/SCP, C-FIND SCU/SCP, C-GET SCU/SCP) .

OsiriX has been specifically designed for navigation and visualization of multimodality and multidimensional images: 2D Viewer, 3D Viewer, 4D Viewer (3D series with temporal dimension, for example: Cardiac-CT) and 5D Viewer (3D series with temporal and functional dimensions, for example: Cardiac-PET-CT). The 3D Viewer offers all modern rendering modes: Multiplanar reconstruction (MPR), Surface Rendering, Volume Rendering and Maximum Intensity Projection (MIP). All these modes support 4D data and are able to produce image fusion between two different series.

OsiriX is at the same time a DICOM PACS workstation for imaging and an image processing softwarefor medical research (radiology and nuclear imaging), functional imaging, 3D imaging, confocal microscopy and molecular imaging.

OsiriX is available in 32-bit and 64-bit format. The 64-bit version allows you to load an unlimited number of images, exceeding the 4-GB limit of 32-bit applications. The 64-bit version is also fully optimized for Intel multi-cores processors, offering the best performances for 3D renderings.

OsiriX supports a complete plug-ins architecture that allows you to expand the capabilities of OsiriX for your personal needs! This plug-in architecture gives you access to the powerfull Cocoa frameworkwith an easy object-oriented and dynamic language: Objective-C.

Current features

DICOM File Support

  • Read and display all DICOM Files (mono-frame, multi-frames)
  • Read and display the new MRI/CT multi-frame format (5200 group)
  • JPEG Lossy, JPEG Lossless, JPEG2000, RLE
  • Monochrome1, Monochrome2, RGB, YBR, Planar, Palettes, ...
  • Support custom (non-square) Pixel Aspect Ratio
  • 8, 12, 16, 32 bits
  • Write 'SC' (Secondary Capture) DICOM Files from any 2D/3D reconstructions
  • Read and display all DICOM Meta-Data
  • Read AND Write DICOM CD/DVD (DICOMDIR support)
  • Export DICOM Files to TIFF, JPEG, Quicktime, RAW, DICOM, PACS

DICOM Network Support

  • Send studies (C-STORE SCU, DICOM Send)
  • Receive studies (C-STORE SCP, DICOM Listener)
  • C-FIND SCU, C-MOVE SCU (Query and Retrieve studies from/to a PACS workstation)
  • C-FIND SCP, C-MOVE SCP (Use OsiriX as a DICOM PACS server)
  • C-GET SCU/SCP, support for dynamic IP transfers

Non-DICOM Files Support

  • LSM files from Zeiss (8, 16, 32 bits) (Confocal Microscopy)
  • BioRadPIC files (8, 16, 32 bits) (Confocal Microscopy)
  • TIFF (8, 12, 16, 32 bits), multi-pages
  • ANALYZE (8, 12, 16, 32 bits)
  • PNG, JPEG, PDF (multi-pages), Quicktime, AVI, MPEG, MPEG4

2D Viewer

  • Customizable Toolbars
  • Bicubic Interpolation
  • Thick Slab for multi-slices CT and MRI (Mean, MIP, Volume Rendering)
  • ROIs: Polygons, Circles, Pencil, Rectangles, Point, ...
  • Multi-Buttons and Scroll-wheel mouses supported
  • Custom CLUT (Color Look-Up Tables)
  • Custom 3x3 and 5x5 Convolution Filters (Bone filters, ...)
  • 4D Viewer for Cardiac-CT and other temporal series
  • Image Fusion for PET-CT exams with adjustable blending percentage
  • Image subtraction for XA
  • Plugins support for external functions

3D Post-Processing

  • MPR (Multiplanar Reconstruction) with Thick Slab (Mean, MIP, Volume Rendering)
  • Curved-MPR
  • MIP (Maximum Intensity Projection)
  • Volume Rendering
  • Surface Rendering
  • Stereo Vision with Red/Blue glasses
  • Export any 3D images to Quicktime, Quicktime VR, TIFF, JPEG
  • All 3D viewers support 'Image Fusion' for PET-CT exams and '4D mode' for Cardiac-CT.


  • Universal application, compiled for Intel and PowerPC processors
  • Multi-threaded for multi-processors and multi-core processors support
  • Asyncronous reading
  • OpenGL for 2D Viewer and all 3D Viewers
  • Graphic board accelerated, with 3D texture mapping support
  • Available in 32-bit and 64-bit

Expansion & Scientific Research

  • OsiriX supports a complete dynamic plugins architecture
  • Access pixels directly in 32-bits float for B&W images or ARGB values for color images
  • Create and manage windows
  • Access the entire Cocoa framework
  • Create and manage OpenGL views
  • Faster than IDL, Easier than ImageJ !

Based on Open-Source components

  • Cocoa (OpenStep, GNUStep, NextStep)
  • VTK (Visualization Toolkit)
  • ITK (Insight Toolkit)
  • PixelMed (David Clunie)
  • Papyrus 3.0 (Digital Imaging Unit)
  • DICOM Offis
  • OpenGL
  • LibTIFF
  • Jasper
  • LibJPEG

Using Osirix to generate DICOM CD-Roms

Are you planning to generate DICOM CD-Roms for your institution or your radiology department?
Did you know you can install OsiriX Lite as a stand-alone DICOM viewer in a DICOM CD-Rom?

Simply copy the OsiriX application at the top level of the CD-Rom (at the same level of the DICOMDIR file). When a user, double-click on it, OsiriX will automatically display DICOM files of the CD-ROM!

It's fast, convenient and free!

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