@inproceedings{b9b81f3283404b0b9a5ed176c5db728a,
title = "Four-dimensional non-rigid cardiac motion estimation",
abstract = "Electrocardiogram-gated cardiac CT reconstruction methods have been developed to reduce motion artifacts; however, projection data used in reconstruction are limited to those within gating time windows, resulting in large image noise. Motion compensated image reconstruction is capable of fully utilizing all projection data if a motion vector field is known. In this work, we propose a non-rigid four-dimensional image-based motion estimation method which uses a nested conjugated gradient method to minimize a cost function. The proposed method is implemented on GPU using CUDA, and its performance was verified with patient data.",
keywords = "Conjugate gradient, MVF, Motion estimation",
author = "Qiulin Tang and Jochen Cammin and Somesh Srivastava and Katsuyuki Taguchi",
year = "2012",
doi = "10.1117/12.911099",
language = "English (US)",
isbn = "9780819489630",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
booktitle = "Medical Imaging 2012",
note = "Medical Imaging 2012: Image Processing ; Conference date: 06-02-2012 Through 09-02-2012",
}