@inproceedings{9af80266d7f747b09a90ba64d2e74989,
title = "Tissue-Volume Preserving Deformable Image Registration for 4DCT Pulmonary Images",
abstract = "We propose a 4D (three spatial dimensions plus time) tissue-volume preserving non-rigid image registration algorithm for pulmonary 4D computed tomography (4DCT) data sets to provide relevant information for radiation therapy and estimate pulmonary ventilation. The sum of squared tissue volume difference (SSTVD) similarity cost takes into account the CT intensity changes of spatially corresponding voxels, which is caused by the variations of fraction of tissue within voxels throughout the respiratory cycle. The proposed 4D SSTVD registration scheme considers the entire dynamic 4D data set simultaneously, using both spatial and temporal information. We employed a uniform 4D cubic B-spline parametrization of the transform and a temporally extended linear elasticity regularization of deformation field to ensure temporal smoothness and thus biological plausibility of estimated deformation. We used a multiresolution multi-grid registration framework with limitedmemory Broyden Fletcher Goldfarb Shanno (L-BFGS) optimization procedure for rapid convergence and limited memory consumption. We conducted experiments using synthetic 2D+t images and clinical 4DCT pulmonary data sets and evaluated accuracy and temporal smoothness of the proposed method via manually annotated landmarks.",
keywords = "4D image registration, Groupwise image registration, Mass preservation, Radiation therapy, Sum of squared tissue volume difference, Temporal smoothness, Treatment planning",
author = "Bowen Zhao and Christensen, {Gary E.} and Song, {Joo Hyun} and Yue Pan and Gerard, {Sarah E.} and Reinhardt, {Joseph M.} and Kaifang Du and Taylor Patton and Bayouth, {John M.} and Hugo, {Geoffrey D.}",
note = "Funding Information: This work is supported in part by National Cancer Institute of the National Institute of Health (NIH) under award numbers R01CA166703 and R01CA166119. Publisher Copyright: {\textcopyright} 2016 IEEE.; 29th IEEE Conference on Computer Vision and Pattern Recognition Workshops, CVPRW 2016 ; Conference date: 26-06-2016 Through 01-07-2016",
year = "2016",
month = dec,
day = "16",
doi = "10.1109/CVPRW.2016.67",
language = "English",
series = "IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops",
publisher = "IEEE Computer Society",
pages = "481--489",
booktitle = "Proceedings - 29th IEEE Conference on Computer Vision and Pattern Recognition Workshops, CVPRW 2016",
}