Computation of unmeasured third-generation VCT views from measured views.
We compute unmeasured cone-beam projections from projections measured by a third-generation helical volumetric computed tomography system by solving a characteristic problem for an ultrahyperbolic differential equation [John (1938)]. By working in the Fourier domain, we convert the second-order PDE into a family of first-order ordinary differential equations. A simple first-order integration is used to solve the ODEs.
Patch
Sarah K
SK
Applied Science Lab, GE Medical Systems, Milwaukee, WI 53201, USA. sarah.patch@med.ge.com
D000465:Algorithms; D003198:Computer Simulation; D005583:Fourier Analysis; D021621:Imaging, Three-Dimensional / Q000379:methods*; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000379:methods*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D036542:Tomography, Spiral Computed / Q000295:instrumentation / Q000379:methods*