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Proceedings Paper

A motion estimation and compensation algorithm for 4D CBCT of the abdomen
Author(s): Seongjin Yoon; Alexander Katsevich; Michael Frenkel; Peter Munro; Pascal Paysan; Dieter Seghers; Adam Strzelecki
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Paper 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.

Paper Details

Date Published: 28 May 2019
PDF: 5 pages
Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110720E (28 May 2019); doi: 10.1117/12.2534879
Show Author Affiliations
Seongjin Yoon, iTomography Corp. (United States)
Alexander Katsevich, iTomography Corp. (United States)
Univ. of Central Florida (United States)
Michael Frenkel, iTomography Corp. (United States)
Peter Munro, Varian Medical Systems Imaging Lab. (Switzerland)
Pascal Paysan, Varian Medical Systems Imaging Lab. (Switzerland)
Dieter Seghers, Varian Medical Systems Imaging Lab. (Switzerland)
Adam Strzelecki, Varian Medical Systems Imaging Lab. (Switzerland)


Published in SPIE Proceedings Vol. 11072:
15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Samuel Matej; Scott D. Metzler, Editor(s)

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