DocumentCode :
2111828
Title :
Distributed PACS using distributed file system with hierarchical meta data servers
Author :
Hiroyasu, Tomoyuki ; Minamitani, Yasushi ; Miki, M. ; Yokouchi, Hisatake ; Yoshimi, Masato
Author_Institution :
Dept. of Life & Med. Sci., Doshisha Univ., Kyotanabe, Japan
fYear :
2012
fDate :
Aug. 28 2012-Sept. 1 2012
Firstpage :
5891
Lastpage :
5894
Abstract :
In this research, we propose a new distributed PACS (Picture Archiving and Communication Systems) which is available to integrate several PACSs that exist in each medical institution. The conventional PACS controls DICOM file into one data-base. On the other hand, in the proposed system, DICOM file is separated into meta data and image data and those are stored individually. Using this mechanism, since file is not always accessed the entire data, some operations such as finding files, changing titles, and so on can be performed in high-speed. At the same time, as distributed file system is utilized, accessing image files can also achieve high-speed access and high fault tolerant. The introduced system has a more significant point. That is the simplicity to integrate several PACSs. In the proposed system, only the meta data servers are integrated and integrated system can be constructed. This system also has the scalability of file access with along to the number of file numbers and file sizes. On the other hand, because meta-data server is integrated, the meta data server is the weakness of this system. To solve this defect, hieratical meta data servers are introduced. Because of this mechanism, not only fault - tolerant ability is increased but scalability of file access is also increased. To discuss the proposed system, the prototype system using Gfarm was implemented. For evaluating the implemented system, file search operating time of Gfarm and NFS were compared.
Keywords :
PACS; distributed databases; information retrieval; meta data; software fault tolerance; DICOM file; Gfarm; distributed PACS; distributed file system; fault-tolerant ability; file search operating time; hierarchical meta data servers; image data; image file access; medical institution; picture archiving-and-communication systems; DICOM; Hospitals; Medical diagnostic imaging; Picture archiving and communication systems; Servers; XML; Information Storage and Retrieval; Programming Languages; Radiology Information Systems; Systems Integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
ISSN :
1557-170X
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/EMBC.2012.6347334
Filename :
6347334
Link To Document :
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