Transcript Development of a 3D Stomach Model for Surgical Planning Qaiser Chaudry, Todd H.

Development of a 3D Stomach Model
for Surgical Planning
Qaiser Chaudry, Todd H. Stokes, Richard Moffitt, Syed H. Raza, Jorge v.
Rogel, Jin Young Hong, Gabriel Wardi, Michelle Lightfoot, Mark Wulkan
MD, Yan Xu and May D. Wang
Introduction
• Infant/baby Gastroesophageal reflux disease
(GERD)
• CTscans – low resolution,
disconnected 2D information
Introduction
• Visible Human Project
– 4096 x 2700 pixels images (0.33mm pixel resolution)
– 1mm axial spacing
– 1871 high resolution images.
http://www.madsci.org/~lynn/VH/transverse.html
Introduction
Sequence of Presentation
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Introduction
Development of VH stomach model
Development of CT based stomach model
Model registration and issues
Local registration / morphing
Results
Conclusion
Development of VH stomach model
Segmentation
VTK workflow for creation and
interactivity with stomach model
Segmented
images of
stomach walls
Conversion to
VTK volume
format
Model
Rendering
Extraction of
skin surface
Model Interactor
Data collection
using interactor
interface
3D Model and its refinement
3D Model and its refinement
Segmented Infant Stomach
Infant stomach
Registration
Point and Shoot method for points pickup
Issues with Rigid Registration
Multiple Object registeration
Local registration with surface
normal based morphing
Different cases
Comparison
Flash back
Virtual surgery and planning