CS 493 Project Definition

• The project assignment is a simplified version of the Integrating Healthcare Enterprise (IHE) Cross-Enterprise Document Sharing (XDS) Profile

• Web site: http://www.ihe.net/Technical_Framework/• A number of simplifying assumption is made and a few

corners cut to make this a viable class project• Goal of the project is to be able to do the following:

– Ability to build a distributed solution using web services infrastructure

– Ability to build RELIABLE distributed systems– Ability to build distributed solutions that utilizes both

synchronous and asynchronous messages

IHE Cross-Enterprise Document Sharing (XDS) Profile

• Ability for a source of clinical documents to register and store documents in a repository

• Ability for a consumer of clinical documents to query registry and retrieve documents from a repository

Website: Volume 1: (ITI TF-1): Integration ProfilesVolume 2: (ITI TF-2): Transactions

Number of simplifying and not so simple assumptions

• One patient identifier domain • Few (two to three) document sources• One registry – but in this project will call

for replicated registry to increase reliability and availability

• Only look at some of the key required transactions and completely ignore optional transactions defined in this integration profile

Actors

Document Source Producer and Publisher of documents

Document Consumer Queries registries and retrieves documents from repositories

Document Registry Maintains metadata about each registered document

Document Repository Maintains persistent storage of documents and assigns URI for document retrieval

Patient Identity Source Provider of unique patient ids (such as a registration system)

Actors and Transactions

Document Consumer Query Registry

Retrieve Document

Document Source Provide and register document set

Document Repository Provide and register document set

Register document set

Retrieve Document

Document Registry Register Document Set

Query Registry

Patient Identity Feed

Patient Identity Source Patient Identity Feed

IHE XDS Scheme

Patient Identity Source

Document Registry

Document RepositoryDocument Source

Document Consumer

Patient IdentityFeed [ITI-8]

RegisterDocument Set [ITI-14]

ProvideDocument Set [ITI-15]

RetrieveDocument [ITI-17]

Query Registry [ITI-16]

Ignore for the purposeof the project

Project Implementation Configuration

Document Source+

Document Repository

Document Registry

Document Consumer

Document Source+

Document Repository

Relevant SectionsVolume I• 10 Cross-Enterprise Document Sharing (XDS), pg 69-96

provides background informationVolume II• 3.14 Register Document Set pg 86-127

– {Ignore the following sections: • 3.14.4.1.2.3.4 , • 3.14.4.1.2.3.5, • 3.14.4.1.2.5, • 3.14.4.1.2.9, • 3.14.4.1.2.10, • 3.14.4.1.2.15 }

• 3.15.4.1.2.3.1.1 General structure and header, pg 131• 3.16 Query Registry pg 139-144.• 3.17 Retrieve Document pg 159-163

General Requirements

• Documents that needs to be submitted: can be one of:– CDA documents {I will provide samples}– PDF or Word documents– Must simulate sample clinical data

• Document Metadata that needs to be captured– Patient Id– Service start and stop time– Document Creation time– Document Class Code and Display Name– Healthcare Facility Type Code and Display Name– Availability Status– Document Unique Id

• Registry Implementation– Should use replication to improve reliability

Project Teams

• You can do it alone

• You can do it in a team of two or three

• Project scope will be scaled up and down based on whether it is a team or not.

Project Timeline

• March 9th

– Sequence Diagrams, Requirements that are going to be addressed & Preliminary Design – 6 Pts

• March 23rd – Design Documents – Class diagrams – 6 Pts

• April 6th – First demonstration – Submission of documents to

registry – 9 Pts

• April 27th – Project Final demonstration – Full scenario – 9 Pts