2016 Summer Project Week/SliceTracker

Key Investigators

• Christian Herz (BWH)
• Peter Behringer (Basler AG)
• Andriy Fedorov (BWH)

Project Description

Slicetracker is a Slicer extension which focuses on tracking the prostate during MR-guided prostate biopsies. It combines registration of the prostate in pre-procedural and intra-procedural images which improves the chance to find the exact same target position in intra-procedural images.

Furthermore a so called z-Frame registration is included for correlating the patient and 3D Slicers coordinate system. For guidance of the needle a template grid with 15x14 holes is placed in front of the z-Frame. The optimal hole is computed for inserting the needle and obtaining the tissue sample.

Objective	Approach and Plan	Progress and Next Steps
Use SliceTracker currently used in shadow mode + collecting feedback from Kemal about usability At least 5 cases in a row which has to run without having any issues, then production use Integration of Z-Frame registration Calculation of template hole and depth to apply for reaching targets	Discussions and feedback about usability and improvements	Discussions about implementing SliceTracker as a Slicelet (this will prevent users from making mistakes/pushing wrong buttons etc.) Next Steps: Will soon run in production mode replacing the "old" Slicer 3 cart As soon as it is in its final state: create extension

Background and References

SliceTracker code: https://github.com/SlicerProstate/SliceTracker

Previous project week resources:

• Winter 2015: http://www.na-mic.org/Wiki/index.php/ProstateNavigation_workflow
• Summer 2015: http://www.na-mic.org/Wiki/index.php/2015_Refinement_Registration_Module
• Winter 2016: http://www.na-mic.org/Wiki/index.php/2016_Winter_Project_Week/Projects/SliceTracker