Four-dimensional non-rigid cardiac motion estimation

Qiulin Tang; Jochen Cammin; Somesh Srivastava; Katsuyuki Taguchi

doi:10.1117/12.911099

24 February 2012 Four-dimensional non-rigid cardiac motion estimation

Qiulin Tang, Jochen Cammin, Somesh Srivastava, Katsuyuki Taguchi

Proceedings Volume 8314, Medical Imaging 2012: Image Processing; 831454 (2012) https://doi.org/10.1117/12.911099
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

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.

Citation Download Citation

Qiulin Tang, Jochen Cammin, Somesh Srivastava, and Katsuyuki Taguchi "Four-dimensional non-rigid cardiac motion estimation", Proc. SPIE 8314, Medical Imaging 2012: Image Processing, 831454 (24 February 2012); https://doi.org/10.1117/12.911099

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