XIP™/AVT Project Plans

2012

A report to the caBIG® In-Vivo Imaging Workspace

Lawrence Tarbox, Ph.D..

December 2011

Combined XIP™ / AVT Maintenance

• XIP is an open source environment for rapidly developing medical imaging applications from an extensible set of modular elements and libraries.

• AVT is a set of open source applications developed with the XIP Libraries™, designed to run on an XIP Host™ system that is extended with an AVT-specific database. AVT was designed to facilitate the statistical analysis of data extracted from collections of images, such as data sets gathered during clinical trials.

• The operations and maintenance of both the XIP and the AVT projects have been merged into a single contract with Washington University in St. Louis for this fiscal year.

Major Parts of XIP™

• DICOM Application Hosting APIs

• a method for deploying applications portably

• The XIP Host™

• a research focused DICOM Hosting System for running Hosted Applications, such as those built with XIP™

• XIP Libraries™

• modular components for building applications

• The XIP Builder™ Developer Tool

• a visual/graphical programming tool that helps accelerate XIP™ application development

• Skeletal and Sample Applications

Major Parts of AVT

• AD – the Assessment Database• A database, accessed by the XIP Host™, for organizing

images, AIM objects, etc. for a research project• IA – the Image Annotation Application

• A tool for generating AIM objects incorporating RECIST, WHO, and semi-auto lesion segmentation

• AE – the Algorithm Execution Application• A tool for running an XIP™ scene graph iteratively over a

set of images, driven by AIM objects (e.g. seed points)• MVT – the Measurement Variability Tool

• A tool for performing statistical analysis of multiple measurements made on a collection of data

Principal Goals

• Engage the community via the Knowledge Center

• Encourage and support community discussion about, contributions to and use of XIP and AVT

• Remain Synchronized with other caBIG® projects

• Utilize latest versions of caGrid, Middleware, AIM, NBIA

• Produce at least one new major Release

• Incorporate latest enhancements, bug fixes, etc.

• Sketch out and prototype where possible Future plans

• Focus on supporting QIN through leveraging AVT and other NIH projects, such as 3D Slicer

Engage

• All project planning focused through JIRA

• Bugs, Stories for new requirements, Tasks, everything

• Agile planning (sprints leading to releases) and tracking

• Improve wiki

• Improved set of tutorials, based on live classes

• Reorganization and cleanup

• Consolidate code repositories

• Combine AVT and XIP Host™ repositories

• Mirror XIP Libraries™ repository

• Support Knowledge Center

• Monitor forums and answer questions as needed

• Keep KC web pages up-to-date

eXtensible Imaging Platform Default

XIP Release Board

Synchronize

• Utilize Security Token Service (STS) for XIP Host™ logins

• Update, via Middleware and STS, to caGRID 1.4

• Upgrade connectivity to DICOM, AIM, and NBIA Data Services, testing with their latest releases

• Utilize latest AIM models to generate/parse AIM objects

• Update to the latest IHE Profiles libraries from Open Health Tools for PDQ and XDS (NHIN) access

• Update to latest revision of DICOM Application Hosting (Part 19)

Release

• Multiple minor releases leading to at least one major release by the end of the contract year

• Content determined by Task Review Board

• Current plans include

• Vetted community contributions

• Prioritized fixes to problems reported in JIRA

• Updates to maintain synchronization with other projects

• Selected enhancements as resources permit

• Complete previous year’s work

Previous Year’s Work

• Improve Search Tree Navigation

• Query on demand, select to object level

• Lazy Retrieve and Iterator

• Data retrieval only when app asks for it

• Iterate based on patient, study, series

• PDQ lookup and XDS Retrieve (IHE Profiles)

• Connectivity to MPI, RHIO, HIE, NHIN, etc.

• Steps toward modularized search/retrieve

• Leading toward pluggable search modules

• XIP Host™, XIP Libraries™, and sample applications (now also AVT applications) working on Linux and Mac OS X

XIP User Screen

Future

• Sketch out and prototype how to use 3D Slicer as an image annotation tool for AVT

• Translate between 3D Slicer annotation format and AIM

• Run 3D Slicer as a Hosted Application on XIP Host™

• Store and retrieve 3D Slicer annotations in AD

• Sketch out use scenarios where a representative QIN project could utilize AVT/XIP

• Will be used to drive AVT/XIP requirements planning

• Goal is to increase utilization of AVT/XIP in NCI-sponsored research

We encourage the community to help extend and enhance XIP and AVT, based on their own needs, contributing their changes back to the XIP/AVT code base.