Home < 2007 December Slicer IGT Programming

Introduction

Sponsored by
NA-MIC
NCIGT
IGT program of CIMIT
NAC

This is a working meeting for research groups with funding to work on the IGT extensions of the NA-MIC kit. There will be a follow up meeting during the NA-MIC AHM in SLC.

Dates.Location.Hotels

Date: December 12-14, 2007

SPL at 1249 Boylston Street, Boston MA. (Directions)

Area hotels: Boston_Hotels

Goal

Continued discussion of Slicer IGT infrastructure, applications, and timelines
Introduce each team's effort in Slicer in the context of IGT
active funding&future submissions
on-going technical development
find unmet needs
find how we can share the work
Learning IGSK-Slicer
Interface to scanners

Agenda

Wednesday, December 12

Theme: Where are we?

12noon: lunch
12:55pm: Welcome (Ron Kikinis)
1-2pm:
- Slicer: overview of architecture, current status, and future plans (Pieper, Hata)
  - History
  - Clinical applications
  - transition from 2.6 to 3
  - resource
  - Slicer Core + Loadable Modules
- IGSTK
  - Architecture Overview (Ibanez)
  - Current status, and future plans (Cheng) Refactoring Design Discussion
  - IGSTK has time stamping for tracker and event.
  - Monitors to ensure the minimal latency between display and data acquisition (possible take away from IGSTK to Slicer).
  - works on FLTK, Qt

215-330pm: Setting goals for meeting: Each IGT group present what they want to achieve at this meeting.
- 2:30-3:00pm - NCIGT CIGL Stoll and Demo
  - Issues for Slicer

Move toward multi-process model, keep idea of GPU capability in mind for future
online/unsupervised segmentation, online/fast registration (almost like tracking); can trade some accuracy for speed
flexibility in registration techniques - data collection is not perfectly constrained (patient positions vary, image quality varies, fiducials sometimes/not) - tools for anatomy-based registration

- 3:00-3:15 - NA-MIC Collaborator Georgetown Cleary/Yaniv
- 3:15-3:30 - NA-MIC DBP Queens/JHU Gobbi/Csoma/Kazanzides
3:30pm-3:45pm: Review of today's progress
- Did you find what the others are doing with Slicer?

Adjourn

4-6pm (optional) demonstration of Slicer for control and display of MRI scanner (prostate module) @Advanced MRI center, 221 Longwood
- See slicer-MRI demo

Thursday, December 13

Morning

Theme: Where are we?

9:00am breakfast, start work

9-10:00am Demos:

Hata (Tracking at BWH)
Freudling (Pieper) (Volume rendering)

1000-10:30am Demonstrations

- Robot-assisted neurosurgery with Slicer (Kazanzides)
- Robot connected to Slicer via Robot control unit (with Real time OS)
- Slicer CT coords != Stealthstation CT coords
- Needs rasToIjk matrix from xml file
- Inter-computer communication

Slicer 3 IGT update

10:30am: Identifying the unmet needs

(At this point, representatives from each site should start thinking which part of the unment needs they can take primary responsibility, and take home as homework.)

Queens: NA-MIC DBP
JHU: BRP
BWH: NCIGT etc.
Georgetown: Liver RF
Kitware-BWH

Identify the unique needs in IGT
Identify commonality among the projects
which one is to be covered by actively funded project?

Identity and prioritize unmet needs
Find commonality among the needs, consolidate if necessary
Identify 2x three focus groups for afternoon

Plug-in mechanism

Plug-in mechanism / Modules

Currently we use CMake + Slicer3
Compile vs. Run-time -> run-time is current choice for Steve
Slicer Base version 3.0
Binary distributed againg Base version
Firefox extension
How do you balance testing and flexibility.
Version control necessary
which is module

effort underway in NA-MIC/NAC
Be ready by XXXXXX.

Module/function dependency

Tracker I/O (BWH Hata)
- Tracker On/Off
Real-Image I/O (BWH Hata)
- Video capturing
- Simple loading image
- Imager control for each modality
  - MRI (NCIGT Tokuda)

Image re-slicing based on tracker (BWH Hata Liu)

GUI configuration control (XXX)

Human interface control
- Foot pedal (BWH Liu)

Stereo
Output to outside display

Logging replay and saving
- IGSTK has fast version
- MRML scene recorder (Georgetown)

Module/function dependency

Features	Base	Module
Visualization	MRML, Arbitary ViewPoint (Pre-defined)	Liver RF
Filtering	None	Command Line Module
IGT	Intra-op Image I/O	Liver RF
Registration	Transform Display, Edit and Save/Resotre	Calculae Transforms, Resample Data
Segmentation	Label Maps, Parcellated Surface	Segmentation Algorighms
Quantification	Label, Image, Volume Statistics; Numpy access to MRML	Applications in Python or MATLAB
Real-time Integration	VTK Rendering, KWWidgets framework, Tracker Support (as Transforms)	Direct Manipulation of the MRL Scene; 2D/3D Widgets; Device Interface
Diffusion Imaging	DWI, DTI, Fiber Bundles	Tractography, Clustering, Atlases
Application	Bundles of Modules in Distribution: Registration Editor, some Filters	Customized Extensions, Domain specific code, optimized Interface

12:00-1pm First round of break out session

(topics to be decided in the morning session)

Report template

http://wiki.na-mic.org/Wiki/index.php/2007_December_Slicer_IGT_Programming:report-template

Reports

December 12-14, 2007, Slicer IGT Programming - IGSTK Slicer Integration

1pm: lunch

Afternoon

1:30-2:30pm Discussion continues

Events / Data transfer

- Data/communication/event...
  - Data Workflow I/O
  - ticking and latency management
  - Threads to read-in tracker info
  - Special DICOM and PACS
  - Priority control of events? -> Event Manager
  - Realtime needs
  - Inter-communication mechanism to/from Slicer

- - Socket mechanism in SlicerDaemon
  - Steve's presentation of small programming sending coords to SlicerDaemon and updating MRML
  - Scenesnapshot can be used as logging. Replay. Crash recovery.

- - State machines may be useful mechanism in Slicer

- - Connection with commercial navigation system
    - MR/T BWH
    - Brainlab
    - Neuromate
    - Medtronics

3-4pm: List 2
- Inter-communication mechanism to/from Slicer
  - Tracker Image
  - Publish subscribe ORB/ACE [Peter]
  - Socket IGSTK [Junichi Patrick]

- Volume rendering
  - Performance and speed continue to be upgraded
  - GPU, fastere volume rendering
  - 4D IGT
  - Real I/O
  - New MRML? Time-series MRML volume?

- (Regulartory approval) (Legal issue/ form / guideline)

4:00 Discussion

- GUI
  - GUI-Workflow (David)
  - David's opening statement from Queens' perspective
  - How can we add additional windows?
  - KWWidgets has workflow mechanism
  - Compacting GUI - necessary
  - Single screen? Two screen setup? Two screen setup to be tried by David
  - KWWidgets Wizard Workflow Powerpoint presentation.

- - Observing events (convenience)

- - Status window is nice
  - short cut
    - pre-defined view point
    - lower left (two complicated)
  - GUI Layout to be stored in MRML (as log)
  - Turning off lower left
  - Status (window) part

- - human interface--
    - Voice
    - configurable GUI using current XML mechanism
      - What's the mechanism for Slicer-IGT

- - Overlay of tools in 2D view of Slicer

5pm: Review day and plan for Friday (Hata)

5:30pm: adjourn

Friday, December 14

9:00am: breakfast, work
9:30-11:00am

Review of the meeting
Discuss how we can continue this effort in what way
- Hands on IGT Week
  - Outreaching to animal research community
  - Training and simulation

Action Items
- NCIGT
- Georgetown
- Kitware
- Queens
- JHU
11:00am-noon: Wrapup/Suggestion to NAC, NCIGT, NAC, and ultimately NIH(Hata)
noon: adjourn and head out to group lunch