Method and apparatus for distributed data archiving

• US 7,277,903 B2
• Filed: 08/02/2001
• Issued: 10/02/2007
• Est. Priority Date: 08/29/2000
• Status: Expired due to Fees

• Current Assignee: Agfa Healthcare Corporation (Agfa-Gevaert N.V.)
• Original Assignee: Heartlab Incorporated (Agfa-Gevaert N.V.)
• Inventors: Petrocelli, Robert R.
• Primary Examiner(s): HWANG, JOON H
• Application Number:
  US09/920,973
• Publication Number:
  US 20020046215A1
• Time in Patent Office: 2,252 Days
• Field of Search: 707 1- 10, 707100-1041, 707200-206, 705 2- 4
• US Class Current: 1/1
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

An archive system is provided for long term storage of large amounts of data that is particularly suited for multi-year storage of medical data such as cardiac images, patient demographics and reports. One or more digital versatile disks (DVDs) may be employed as the storage media. In the archival process, all of the data for a particular patient, procedure or study is stored and uniquely identified within one DVD. Each DVD may have an executable program stored thereon for independently accessing the archived data from the selected DVD. Before the DVD is recorded, the data to be archived is segmented into a plurality of information groups where each group is based on data for the particular patient, procedure or study. Then, the DVD is reviewed to determine whether a sufficient amount of storage space is present to ensure that the information group will be entirely stored within one DVD.

Claims

1. A method for distributed data archiving, comprising the steps of:

accessing patient medical data from at least one external source;

segmenting the patient medical data into a plurality of information groups with each information group corresponding to information about a particular patient;

providing a data archiving system comprised of a plurality of archival storage media;

storing each information group onto an archival storage media, said information groups being stored on said archival storage media with each information group having an identification, the identification being unique from all other information groups stored within said archival storage media and all other archival storage media, enabling said information groups to be independently accessed, within or without the data archiving system in which the information groups were created, and each information group being stored entirely only on one of said plurality of archival storage media by the following steps;

determining an available storage capacity of the storage medium,

comparing the available storage capacity of the storage medium to the information group that is to be stored,

recording the information group on the selected storage medium only if a size of the information group is smaller than the available storage capacity of the storage medium, and

selecting another storage medium if the size of the information group is larger than the available storage capacity of the storage medium;

encoding a unique identifier on said one of said plurality of archival storage media to uniquely identify the storage medium from all other storage media, said encoding step including recording an index file having at least an identifier, a data program, and a self-contained database file for each of said information groups on said one of said plurality of archival storage media, wherein the database file recorded on the archival storage media contains information describing clinical procedures of the patient medical data stored on the archival storage media, and wherein the database file is implemented by Digital Image Communications for Medicine; and

independently accessing said one of said plurality of archival storage media at a site other than said data archiving system by reading said index file.

2. A method according to claim 1, wherein said archival storage media comprise digital versatile disks (DVDs).

3. A method according to claim 1, wherein said information groups comprise meta-data and image data.

4. A method according to claim 3, wherein each of said archival storage media comprises an embedded image player for viewing the images.

5. A method according to claim 3, wherein each of said archival storage media comprises an application for interpreting the meta-data.

6. A method according to claim 1, further comprising the step of creating an executable program on each of said archival storage media for retrieving said information groups stored thereon.

7. A method according to claim 1, further comprising the step of recording said information groups on said archival storage media as near-line and off-line storage.

8. A method according to claim 1, wherein a first subset of said archival storage media is provided as on-line storage.

9. A method according to claim 8, wherein said on-line storage comprises a hard disk.

10. A method according to claim 1, wherein a second subset of said archival storage media is provided as near-line storage.

11. A method according to claim 10, wherein said near-line storage comprises a jukebox storage for providing sequentially selectable access to at least one archival storage media.

12. A method according to claim 1, wherein a third subset of said archival storage media is provided as off-line storage.

13. A method according to claim 12, wherein said off-line storage comprises shelf storage for said archival storage media.

14. A method according to claim 1 including independently accessing said one of said plurality of archival storage media by accessing the archival storage media at a clinical imaging station allowing a review of archived images outside of the data archiving system in which the archival storage media was originally created.

15. A method according to claim 1 including encoding an index file that also has an image player.

16. A method according to claim 15 wherein the database file holds all of meta-data required to completely describe a procedure or study stored on the archival storage media.

17. A method according to claim 1 wherein the identifier comprises a volume label.

18. A method according to claim 1, wherein the database file further contains patient demographic information relevant to the clinical procedures recorded on the archival storage media.

19. A distributed data archiving system, comprising:

a user interface for controlling the system, said user interface including a processor for receiving patient medical data from a plurality of external sources and segmenting the patient medical data into a plurality of information groups; and

a memory storage comprised of a plurality of separate archival storage media for storing information groups with each information group corresponding to information about a particular patient, each information group being stored entirely only on one of said plurality of archival storage media by determining an available storage capacity of the storage medium, comparing the available storage capacity of the storage medium to the information group that is to be stored, recording the information group on the selected storage medium only if a size of the information group is smaller than the available storage capacity of the storage medium, and selecting another storage medium if the size of the information group is larger than the available storage capacity of the storage medium,

each archival storage media comprising;

     1) a group information identification, the group information identification being unique from all other information groups stored within said archival storage media and all other archival storage media;

     2) a unique identifier to uniquely identify the archival storage media from all other archival storage media; and

     3) an index file having a data program and a self-contained database file, for each of said information groups, containing information describing clinical procedures of the information groups stored on the archival storage media, said information groups are independently accessed, within or without the data archiving system in which the information groups were created, wherein the database file is implemented by Digital Image Communications for Medicine, and wherein the archival storage media is independently accessed at a site other than said data archiving system by reading said index file.

20. A distributed data archiving system according to claim 19, wherein said user interface comprises a personal computer.

21. A distributed data archiving system according to claim 19, wherein said external sources comprises a workstation.

22. A distributed data archiving system according to claim 19, wherein said external sources comprises a network compatible device.

23. A distributed data archiving system according to claim 19, wherein said memory storage comprises on-line, near-line, and off-line storage media.

24. A distributed data archiving system according to claim 23, wherein said on-line storage media comprises a hard disk.

25. A distributed data archiving system according to claim 23, wherein said on-line storage media comprises a redundant array of independent disks.

26. A distributed data archiving system according to claim 23, wherein said near line storage media comprises a jukebox storage for providing sequentially selectable access to said archival storage media.

27. A distributed data archiving system according to claim 23, wherein said off-line storage media comprises shelf storage for said archival storage media.

28. A distributed data archiving system according to claim 23, further comprising a media recorder for recording said information groups on said archival storage media as near-line and off-line archival storage media.

29. A distributed data archiving system according to claim 19, wherein said user interface creates an executable program for retrieving said information groups stored on said archival storage media and stores said executable program on said archival storage media.

30. A distributed data archiving system according to claim 19, wherein said archival storage media comprise digital versatile disks (DVDs).

31. A distributed data archiving system according to claim 19 wherein the same information group is stored on more than one storage medium having a different unique identifier associated with each.

32. A distributed data archiving system according to claim 19, wherein the database file further contains patient demographic information relevant to the clinical procedures recorded on the archival storage media.