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 Gastro-esophageal 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

• 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

Extraction of skin surface

Conversion to VTK volume format

Model Rendering

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