2013 Project Week:US IGT

Key Investigators

• Matthew Toews, BWH - Harvard Medical School
• William Wells, BWH - Harvard Medical School
• Stephen Aylward, Kitware
• Tamas Ungi, Queens University

Project Description

Objective

• Develop a system to use calibrated, tracked ultrasound (US) to intra-operatively track and visualize pre-operatively defined neurosurgical targets.
• Challenges: 2D-3D registration, intra-operative deformation and missing tissue, inter-modal image registration.

Approach, Plan

• Data preparation: US image and probe tracking information (PLUS system).
• Code development: pre-op to intra-op image matching using local image features.

Progress

Developed and tested code for:

• Input of PLUS US data
• Computation of local feature correspondences between different US sweeps

Result

Example result: Correspondences computed between different US sweeps, PLUS kidney data