Fiducial marker-based correction for involuntary motion in weight-bearing C-arm CT scanning of knees. Part I. Numerical model-based optimization

• Published in: Medical physics (Lancaster) Vol. 40; no. 9; pp. 091905 - n/a
• Main Authors: Choi, Jang-Hwan, Fahrig, Rebecca, Keil, Andreas, Besier, Thor F., Pal, Saikat, McWalter, Emily J., Beaupré, Gary S., Maier, Andreas
• Format: Journal Article
• Language: English
• Published: United States American Association of Physicists in Medicine 01.09.2013
• Subjects: affine transforms; Analysis of motion; biomechanics; biomedical optical imaging; Computed tomography; Computerised tomographs; computerised tomography; Cone beam computed tomography; C‐arm cone‐beam CT; deformation; Digital computing or data processing equipment or methods, specially adapted for specific applications; fiducial marker; Fiducial Markers; Humans; Image data processing or generation, in general; Image Processing, Computer-Assisted - standards; Image quality; Interpolation; Knee - diagnostic imaging; Knee - physiology; Medical image artifacts; medical image processing; Medical image quality; Medical image reconstruction; Medical imaging; motion artifacts; motion compensation; Movement; Movement and locomotion; numerical analysis; Numerical optimization; optimisation; phantoms; Phantoms, Imaging; physiological models; Radiation Imaging Physics; skin; Tissues; Tomography, X-Ray Computed - instrumentation; Visual imaging; Weight-Bearing; weight‐bearing knee; XCAT; fiducial marker; weight-bearing knee; motion artifacts; XCAT; C-arm cone-beam CT

Purpose: Human subjects in standing positions are apt to show much more involuntary motion than in supine positions. The authors aimed to simulate a complicated realistic lower body movement using the four-dimensional (4D) digital extended cardiac-torso (XCAT) phantom. The authors also investigated...