Three-dimensional reconstruction of high contrast objects using C-arm image intensifier projection data

Comput Med Imaging Graph. Nov-Dec 1999;23(6):311-21. doi: 10.1016/s0895-6111(99)00028-2.

Abstract

The reconstruction of three-dimensional (3D) objects from 2D X-ray cone-beam projections using a circular source path is most commonly done with an algorithm according to Feldkamp et al. [Feldkamp LA, Davis LC, Kress JW. Practical cone-beam algorithms. J Opt Soc Am A 1984;6:612-619]. An adaptation of this so-called Feldkamp method to cone-beam projections acquired with a C-arm system is presented here. In a phantom study, reconstruction results obtained along real source-detector trajectories of a C-arm system are compared to reconstruction results obtained from projections acquired from a full-circular trajectory and from one consisting of two full orthogonal circles, which fulfills Tuy's sufficiency condition. The straightforward application of Feldkamp's method adapted to projection data obtained with a C-arm system illustrates the 3D imaging potential of image intensifier based cone-beam computed tomography. Reconstruction results from projection data of different patients acquired with a motorized C-arm system such as vessel structures filled with contrast agent and bones are presented.

MeSH terms

  • Algorithms*
  • Angiography / methods
  • Cerebral Arteries / diagnostic imaging*
  • Cervical Vertebrae / diagnostic imaging*
  • Computer Simulation
  • Contrast Media
  • Elbow Joint / diagnostic imaging*
  • Humans
  • Image Processing, Computer-Assisted / methods*
  • Models, Anatomic
  • Phantoms, Imaging
  • Rotation
  • Tomography, X-Ray Computed / methods

Substances

  • Contrast Media