Visualization Challenges: Specific Medical Needs and General Problems

Elizabeth Bullitt

University of North Carolina Chapel Hill

http://casilab.med.unc.edu/

Visualization Challenges

1) Handling multidimensional data with preservation of 3D (4D) geography/anatomy (also large data)

2) Deformation and changes over time (also curved surfaces)

3) Visualization of likely error (segmentation errors; two surfaces)

4) Interaction with environments (TIPS)

Elizabeth Bullitt MD, University of North Carolina-CH

Background: Statistical analysis of vessel shape

Axial Lateral Frontal

Elizabeth Bullitt MD, University of North Carolina-CH

Statistical Analysis of Vessel Shapes

GENERAL PROBLEM: a) How display multi-valued vectors with preservation of 3D anatomical information? b) Huge data

Elizabeth Bullitt MD, University of North Carolina-CH

2. Intraoperative Deformation

1. How map initial set of images to the patient whose anatomy deforms over time?

2. Requires not new visualization methods; better algorithms for tracking, fast segmentation, and deformable mapping.

3. GENERAL PROBLEMS: Visualizing and cross-mapping time-varying data, arbitrary surfaces

Elizabeth Bullitt MD, University of North Carolina-CH

3. Displaying Error: Example Segmentation Errors

Displaying Two Surfaces

GENERAL PROBLEM: How to display likely error?

4. Interaction. Example: TIPS

1. Thread a catheter through a vascular network to reach a target.

2. Open a clogged vessel, plug an abnormal vessel, or deliver targeted therapy through a vascular network.

3. Explosive procedural growth

Projection Overlap

3D-DSA and segmented vessels. There is significant projection overlap from all angles of view.

TIPS: 3D Stereo Display

GENERAL PROBLEM: How interact more effectively with environment? Point of view? Haptic? Sound? Evaluations. FLAT, 2D DISPLAYS MAY NO LONGER BE SUFFICIENT

The time is right!

http://www.bartleby.com/107/ Gray’s Atlas of Anatomy