A motion estimation and compensation algorithm for 4D CBCT of the abdomen

Seongjin Yoon; Alexander Katsevich; Michael Frenkel; Peter Munro; Pascal Paysan; Dieter Seghers; Adam Strzelecki

doi:10.1117/12.2534879

28 May 2019 A motion estimation and compensation algorithm for 4D CBCT of the abdomen

Seongjin Yoon, Alexander Katsevich, Michael Frenkel, Peter Munro, Pascal Paysan, Dieter Seghers, Adam Strzelecki

Proceedings Volume 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine; 110720E (2019) https://doi.org/10.1117/12.2534879
Event: Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 2019, Philadelphia, United States

Abstract

We propose an algorithm for periodic motion estimation and compensation in the case of a slowly rotating gantry, e.g., as is the case in cone beam CT. The main target application is abdomen imaging, which is quite challenging because of the absence of high-contrast features. The algorithm is based on minimizing a cost functional, which consists of the data fidelity term, the optical flow constraint term, and regularization terms. To find the appropriate solution we change the constraint strength and regularization strength parameters during the minimization. Results of experiments with simulated and clinical data demonstrate promising performance.

Citation Download Citation

Seongjin Yoon, Alexander Katsevich, Michael Frenkel, Peter Munro, Pascal Paysan, Dieter Seghers, and Adam Strzelecki "A motion estimation and compensation algorithm for 4D CBCT of the abdomen", Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110720E (28 May 2019); https://doi.org/10.1117/12.2534879

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