Difference between revisions of "Radiology Image Sharing Roadmap"
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| colspan="6" align="center" style="background:#dddddd" | '''"Distributed" Network''' | | colspan="6" align="center" style="background:#dddddd" | '''"Distributed" Network''' | ||
|- | |- | ||
− | | XDS-I | + | | XDS-I Retrieval (Consumer-Registry-Repository-Source) |
| Query (SOAP) | | Query (SOAP) | ||
| Query | | Query | ||
| Pull (C-Store/WADO) | | Pull (C-Store/WADO) | ||
| none | | none | ||
+ | | | ||
+ | |- | ||
+ | | XDS-I Submission (Source-Repository-Registry) | ||
+ | | Sink (SOAP) | ||
+ | | Keep | ||
+ | | Sink (SOAP) | ||
+ | | re-publish manifest | ||
| | | | ||
|- | |- |
Revision as of 08:25, 17 October 2008
Basically we should identify:
- the use cases we think we need to support
- the current tools we have
We can then see
- the gaps (missing tools) we should develop
- the overlaps (redundant tools) we should retire (hopefully none)
The Aspects of Image Sharing is an attempt to think about the key pieces in the use cases that are addressed by the tools.
<WARNING: Half-baked sketch follows>
Aspects of Image Sharing
Image Sharing should address Awareness, Selection and Access of image data.
There are different viable approaches to each of those three aspects of sharing.
Awareness
Knowing there are images that might be of use.
- Sink Approach - depend on systems to push potentially useful images.
- Notification Approach - depend on systems to tell you about the existence of potentially useful images.
- Query Approach - ask systems what images are available
- Subscribe Approach - sort of a cross between Query and Notification
Selection
Choosing images to make use of.
- Query Approach - evaluate/select based on image details returned in the query
- Notification Approach - see above; trust other system to have selected appropriately
- Keep-or-Toss Approach - get all potential images, evaluate directly and toss unneeded ones
Access
Getting the images.
- Sink Approach - see above
- Pull Approach - retrieve selected images
Update
How you know about updates to images you have copies of.
- Notification Approach
- New Copy?
Transport
How the images are conveyed
- Network vs Media
- Synchronous vs Asynchronous
- Whole vs Incremental
Different approaches have advantages and disadvantages depending on many factors such as network bandwidth, local storage capacity, image persistence times, immediacy of access needs, quality of image metadata, dependence on new software/systems, configuration/maintenance overhead, security needs, privacy needs, etc., etc., etc.
Do we need to elabourate whether access is direct from the source, or indirect through an intermediary (sync issues)?
Do we need to elabourate whether access is synchronous/immediate, or asynchronous/delayed?
What do we have to work with
DICOM Mechanisms
- C-Store
- push across a typical network
- Retrieve
- pull across a network, basically a C-Store invoked by the receiver
- Part 10 - Files
- almost by definition push, asynchronous
- profiled for a large variety of media: CD, DVD, USB, ZIP, Email, FTP
- with/without compression
- includes a MIME type
- Supplement 119 - Instance and Frame Level Retrieve
- Part 18 - WADO - Web Access to Persistent DICOM Objects
- HTTP based pull across the web
- WG-10 Web Services
- NADO - Notification of Availability of DICOM Objects
- QIDO - Query by ID for DICOM Objects
- Supplement 118 - Application Hosting
- includes mechanisms for accessing objects
- File based or abstract model
- (DICOM Print)
- Push to hardcopy
Current Image Sharing Profiles
Profile | Notification | Selection | Access | Update | Transport |
---|---|---|---|---|---|
"Local" Network | |||||
SWF (Mod-PACS) | Sink (C-Store) | Keep | Sink (C-Store) | PIR | |
SWF (PACS-Disp) | Query (C-Find) | Query (C-Find) | Pull (C-Store) | none | |
ARI | Query? | Query (C-Find) | Pull (C-Store) | none | |
TCE (PACS-Dest) | Sink (KIN Tag) | Keep-or-Toss | Sink (C-Store) | none | |
MAWF | |||||
Sneakernet | |||||
PDI/IRWF | Sink | Keep-or-Toss | Sink (CD) | none | |
"Distributed" Network | |||||
XDS-I Retrieval (Consumer-Registry-Repository-Source) | Query (SOAP) | Query | Pull (C-Store/WADO) | none | |
XDS-I Submission (Source-Repository-Registry) | Sink (SOAP) | Keep | Sink (SOAP) | re-publish manifest | |
Proposed Additions | |||||
XDS-I.b | Query (MTOM) | Query | Pull (C-Store/WADO) | none | |
PDI+ | Sink | Keep-or-Toss | Sink (CD/DVD/USB) | none | |
XCA-I | ? | ? | ? | ? | |
Image Management | ? | ? | ? | Delete/Update/Replace | |
Federated Storage | ? | ? | ? | ? |
- Other Referencing
- KIN
- CPI, PGP
- Image Fusion