endoscopy

Orthotropic Thin Shell Elasticity Estimation for Surface Registration

Elastic physical models have been widely used to regularize deformations in different medical object registration tasks. Traditional approaches usually assume uniform isotropic tissue elasticity (a constant regularization weight) across the whole …

The Endoscopogram: A 3D Model Reconstructed from Endoscopic Video Frames

Endoscopy enables high resolution visualization of tissue texture and is a critical step in many clinical workflows, including diagnosis and treatment planning for cancers in the nasopharynx. However, an endoscopic video does not provide 3D spatial …

Surface Registration in the Presence of Missing Patches and Topology Change

The fusion between an endoscopic movie and a CT poses a special surface registration problem. The surface extracted from CT is complete and accurate, whereas the surface extracted from endoscopy suffers from serious missing patches and topology …

Geometric-Feature-Based Spectral Graph Matching in Pharyngeal Surface Registration

Fusion between an endoscopic movie and a CT can aid specifying the tumor target volume for radiotherapy. That requires a deformable pharyngeal surface registration between a 3D endoscope reconstruction and a CT segmentation. In this paper, we propose …