3D-3D Registration of partial capitate bones using spin-images

Ryan Breighner, David R. Holmes, Shuai Leng, Kai Nan An, Cynthia McCollough, Kristin Zhao

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

It is often necessary to register partial objects in medical imaging. Due to limited field of view (FOV), the entirety of an object cannot always be imaged. This study presents a novel application of an existing registration algorithm to this problem. The spin-image algorithm [1] creates pose-invariant representations of global shape with respect to individual mesh vertices. These 'spin-images,' are then compared for two different poses of the same object to establish correspondences and subsequently determine relative orientation of the poses. In this study, the spin-image algorithm is applied to 4DCT-derived capitate bone surfaces to assess the relative accuracy of registration with various amounts of geometry excluded. The limited longitudinal coverage under the 4DCT technique (38.4mm, [2]), results in partial views of the capitate when imaging wrist motions. This study assesses the ability of the spin-image algorithm to register partial bone surfaces by artificially restricting the capitate geometry available for registration. Under IRB approval, standard static CT and 4DCT scans were obtained on a patient. The capitate was segmented from the static CT and one phase of 4DCT in which the whole bone was available. Spin-image registration was performed between the static and 4DCT. Distal portions of the 4DCT capitate (10-70%) were then progressively removed and registration was repeated. Registration accuracy was evaluated by angular errors and the percentage of sub-resolution fitting. It was determined that 60% of the distal capitate could be omitted without appreciable effect on registration accuracy using the spin-image algorithm (angular error < 1.5 degree, sub-resolution fitting > 98.4%).

原文English
主出版物標題Medical Imaging 2013
主出版物子標題Image-Guided Procedures, Robotic Interventions, and Modeling
DOIs
出版狀態Published - 2013
事件Medical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling - Lake Buena Vista, FL, United States
持續時間: 2013 2月 122013 2月 14

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
8671
ISSN(列印)0277-786X

Conference

ConferenceMedical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling
國家/地區United States
城市Lake Buena Vista, FL
期間13-02-1213-02-14

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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