Contour based respiratory motion analysis for free breathing CT.

Journal Article (Journal Article)

We propose a method to quantify superior-inferior (SI) motion of a rigid target using the 3D contour from free-breathing CT (FBCT). The technique utilizes similarity between 2D contours (Jaccard Index) and a population based density function for probability of motion amplitude, and is applicable both when the static target shape is and is not known beforehand. Simulations and phantom measurements showed that motion reconstruction is often feasible, with decreasing accuracy as discrepancy is introduced between assumed and actual static shape. When no static shape is used the analysis is most robust for slow scanning speeds relative to the motion period.

Full Text

Duke Authors

Cited Authors

  • Adamson, J; Zhuang, T; Yin, F-F

Published Date

  • October 2011

Published In

Volume / Issue

  • 41 / 10

Start / End Page

  • 908 - 915

PubMed ID

  • 21839991

Electronic International Standard Serial Number (EISSN)

  • 1879-0534

Digital Object Identifier (DOI)

  • 10.1016/j.compbiomed.2011.08.002


  • eng

Conference Location

  • United States