View source for 2008 IGT Project Week Nonrigid MR-ULS Registration Algorithms for Neurosurgery, Prostate MRgFUS and Brachytherapy

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Team: Sandy Wells, Tina Kapur, Matt Toews, Ben Schwartz, Steve Haker, Michel Audette, Andinet E, Ziv Yanivm Jay, John Onofrey, Raul San Jose

[[Media:2008_IGT_Project_Week_Registration.ppt|Powerpoint Presentation]]

Goals:
A round table discussion of issues relating to multimodal (MR/CT-US) registration for image-guided therapy.  This will include:
#Definition of relevant research issues
#Visual Inspection of data sets brought by participants
#Discussion of clinical requirements for the three focus applications: Neurosurgery, Prostate MRgFUS, and Prostate Brachytherapy, Image Guided Endoscopy/Laproscropy
#Where available, identification of particular algorithms for each of the focus applicatons

Non-exhaustive List of Issues for Discussion
#Goals of Non-Rigid MR-US Registration?
#*Use coarse, cost-effective inter-operative US imagery to update detailed preoperative MR imager, to enhance visualization during therapy.
#Requirements
#*Clinical requirements: registration precision?
#*Is MR-US registration necessary?
#State-of-the-art
#*Existing systems?
#*Real-time?
#*Accuracy?
#Image Registration
#*MR-US similarity measurement: mutual information, correlation ratio?
#*Transforms: rigid, deformable? Outlier detection?
#*3DMR-2DUS slices? 3DMR-3DUS? 3DMR-3DUS reconstuction?
#*Initialialization: 3D tracking of US probe?
#*Freehand US?
#*Robust?
#Updating Pre-operative Imagery
#*What information is required? Rigid/non-rigid deformation? Resolution?
#*Interpolation?
#Challenges
#*Poor US image quality, occlusion, resection, poor visibility of anatomy
#*Computational complexity
#Data
#*Phantom data?
#*Data sharing for benchmarking?
#Approach-based path planning
#*Neurosurgical guidance can/should integrate knowledge of surgical approach: frontal, occipital, pterional, transnasal...
#* Use knowledge of _specific_ critical tissues & likely eloquent areas in path planning
#* Curvilinear neurosurgical path planning.