2015 Summer Project Week:SlicerTAVI

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  Projects List

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Background

• Trans-catheter aortic valve implantation/replacement (TAVI/TAVR)
• Treatment for aortic stenosis (further information)
• Current treatment is sutureless valve inflation (balloon or nitinol) using fluoroscopy/angiography guidance
• Interesting Article About Aortic Valve Disease TAVR on NYT published during Project Week

Proposed research

• We are interested in investigating the use of magnetically tracked ultrasound image guidance for procedure guidance

Key Investigators

• Adam Rankin, Robarts Research Institute, Western University (University of Western Ontario)
• Dr. Terry Peters, supervisor, RRI, UWO
• Dr. Gabor Fichtinger, supervisor, Perk Lab, Queen's University
• Robert Owen, BK

Project Description

Objective

• Continue work on TAVI workflow in a series of Slicer modules
• Module to guide valve holder tool to aortic annulus (depth analysis, tool orientation analysis, etc...)
• Module to facilitate ideal bi-plane orientation from tracked 3D data
• Current source available at (SlicerTAVI)

Questions

• 3D probe calibration (possible rigid transformation from 2D calibration)
• Magnetic tracking in OR not necessarily feasible
• Cardiac surgeons involved express reluctance to give up fluoro (suprise...) so possible generate synthetic fluoro pre-op CT and intra-op US

Approach, Plan

• Develop phase 1 module with magnetic tracking to show feasibility of magnetic solution
• Phase 2 module might include image based tracking, US emitter based tracking, or other solutions suggested by intelligent and good-looking Slicer community

Progress

• Modules already started, basic workflow implemented, lots of details remain to be implemented
• First core pull request with absolutely nothing to do with SlicerTAVI!
  • https://github.com/Slicer/Slicer/pull/294/commits