title: Fast and robust 3D ultrasound registration--block and game theoretic matching.
abstract: Real-time 3D US has potential for image guidance in minimally invasive liver interventions. However, motion caused by patient breathing makes it hard to visualize a localized area, and to maintain alignment with pre-operative information. In this work we develop a fast affine registration framework to compensate in real-time for liver motion/displacement due to breathing. The affine registration of two consecutive ultrasound volumes in time is performed using block-matching. For a set of evenly distributed points in one volume and their correspondences in the other volume, we propose a robust outlier rejection method to reject false matches. The inliers are then used to determine the affine transformation. The approach is evaluated on 13 4D ultrasound sequences acquired from 8 subjects. For 91 pairs of 3D ultrasound volumes selected from these sequences, a mean registration error of 1.8mm is achieved. A graphics processing unit (GPU) implementation runs the 3D US registration at 8 Hz.
authors.affiliation: Dept. of Radiology, Erasmus MC, Rotterdam, The Netherlands; Dept. of Medical Informatics, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Jyotirmoy
authors.initials: J
authors.lastname: Banerjee
authors.affiliation: Dept. of Radiology, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Camiel
authors.initials: C
authors.lastname: Klink
authors.affiliation: Dept. of Medical Informatics, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Edward D
authors.initials: ED
authors.lastname: Peters
authors.affiliation: Dept. of Radiology, Erasmus MC, Rotterdam, The Netherlands; Dept. of Medical Informatics, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Wiro J
authors.initials: WJ
authors.lastname: Niessen
authors.affiliation: Dept. of Radiology, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Adriaan
authors.initials: A
authors.lastname: Moelker
authors.affiliation: Dept. of Radiology, Erasmus MC, Rotterdam, The Netherlands; Dept. of Medical Informatics, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: Theo
authors.initials: T
authors.lastname: van Walsum
mesh_terms: D003199:Computer Systems; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008099:Liver / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000379:methods*
keywords: Liver; Real-time; Registration; Ultrasound