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Proceedings Paper

DICOM implementation on online tape library storage system
Author(s): Darmadi Komo; Hailei L. Dai; David Elghammer; Betty A. Levine; Seong Ki Mun
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Paper Abstract

The main purpose of this project is to implement a Digital Image and Communications (DICOM) compliant online tape library system over the Internet. Once finished, the system will be used to store medical exams generated from U.S. ARMY Mobile ARMY Surgical Hospital (MASH) in Tuzla, Bosnia. A modified UC Davis implementation of DICOM storage class is used for this project. DICOM storage class user and provider are implemented as the system's interface to the Internet. The DICOM software provides flexible configuration options such as types of modalities and trusted remote DICOM hosts. Metadata is extracted from each exam and indexed in a relational database for query and retrieve purposes. The medical images are stored inside the Wolfcreek-9360 tape library system from StorageTek Corporation. The tape library system has nearline access to more than 1000 tapes. Each tape has a capacity of 800 megabytes making the total nearline tape access of around 1 terabyte. The tape library uses the Application Storage Manager (ASM) which provides cost-effective file management, storage, archival, and retrieval services. ASM automatically and transparently copies files from expensive magnetic disk to less expensive nearline tape library, and restores the files back when they are needed. The ASM also provides a crash recovery tool, which enable an entire file system restore in a short time. A graphical user interface (GUI) function is used to view the contents of the storage systems. This GUI also allows user to retrieve the stored exams and send the exams to anywhere on the Internet using DICOM protocols. With the integration of different components of the system, we have implemented a high capacity online tape library storage system that is flexible and easy to use. Using tape as an alternative storage media as opposed to the magnetic disk has the great potential of cost savings in terms of dollars per megabyte of storage. As this system matures, the Hospital Information Systems/Radiology Information Systems (HIS/RIS) or other components can be developed potentially as interfaces to the outside world thus widen the usage of the tape library system.

Paper Details

Date Published: 13 July 1998
PDF: 5 pages
Proc. SPIE 3339, Medical Imaging 1998: PACS Design and Evaluation: Engineering and Clinical Issues, (13 July 1998); doi: 10.1117/12.319759
Show Author Affiliations
Darmadi Komo, Georgetown Univ. Medical Ctr. (United States)
Hailei L. Dai, Georgetown Univ. Medical Ctr. (United States)
David Elghammer, Storage Technology Corp. (United States)
Betty A. Levine, Georgetown Univ. Medical Ctr. (United States)
Seong Ki Mun, Georgetown Univ. Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 3339:
Medical Imaging 1998: PACS Design and Evaluation: Engineering and Clinical Issues
Steven C. Horii M.D.; G. James Blaine, Editor(s)

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