O artigo científico em anexo fez uma comparação excelente entre todos os aplicativos visualizadores de imagens médicas gratuitos disponíveis, de todos os sistemas operacionais (Linux, Windows e Mac). A conclusão final é que o OsiriX é o melhor de todos, o único que oferece todas as ferramentas pesquisadas. O artigo é muito interessante. Artigo completo disponível para assinantes.
O site http://www.idoimaging.com/  possui a lista completa desses visualizadores.
 
Open source software in a practical approach for post processing of radiologic images.
Valeri G1, Mazza FA, Maggi S, Aramini D, La Riccia L, Mazzoni G, Giovagnoni A.
Abstract
PURPOSE:
The purpose of this paper is to evaluate the use of open source software (OSS) to process DICOM images.
MATERIALS AND METHODS:
We selected 23 programs for Windows and 20 programs for Mac from 150 possible OSS programs including DICOM viewers and various tools (converters, DICOM header editors, etc.). The programs selected all meet the basic requirements such as free availability, stand-alone application, presence of graphical user interface, ease of installation and advanced features beyond simple display monitor. Capabilities of data import, data export, metadata, 2D viewer, 3D viewer, support platform and usability of each selected program were evaluated on a scale ranging from 1 to 10 points.
RESULTS:
Twelve programs received a score higher than or equal to eight. Among them, five obtained a score of 9: 3D Slicer, MedINRIA, MITK 3M3, VolView, VR Render; while OsiriX received 10.
CONCLUSIONS:
OsiriX appears to be the only program able to perform all the operations taken into consideration, similar to a workstation equipped with proprietary software, allowing the analysis and interpretation of images in a simple and intuitive way. OsiriX is a DICOM PACS workstation for medical imaging and software for image processing for medical research, functional imaging, 3D imaging, confocal microscopy and molecular imaging. This application is also a good tool for teaching activities because it facilitates the attainment of learning objectives among students and other specialists.
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