WARF: P03161US

Improved CT Image Reconstruction Method for Use with 1-D Detector Arrays


Guang-Hong Chen

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing an improved algorithm for reconstructing CT images.
OVERVIEWThe introduction of 2-D detector arrays significantly improved the diagnostic potential of computed tomography (CT). However, accurate and efficient image construction from the data provided by these detectors has been challenging.
THE INVENTIONA UW–Madison researcher has developed an improved algorithm for reconstructing CT images from scans performed with a fan beam source and a 1-D detector array. A major advantage of this algorithm is that, unlike those employed by most commercially available CT systems, images can be accurately reconstructed by using fan beam data acquired from a scanning path with angular coverage less than the standard 180+ fan angle. This feature improves the temporal resolution of fan beam CT cardiac imaging. The algorithm contains a filtered back projection (FBP) structure that allows the use of fast Fourier transform (FFT) to accelerate the image reconstruction process. It also acquires the data needed to image a region of interest with shorter scan paths than are required by previous algorithms involving FBP, potentially lowering the X-ray dosage associated with CT scanning.
  • CT image reconstruction
  • Better suited to 2-D CT image reconstruction than previous techniques
  • By reducing scan times, promises to lessen patient exposure to X-ray radiation, a feature that is particularly advantageous in pediatric imaging and cardiac imaging
  • Allows the use of parallel processing to speed the image reconstruction process
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For current licensing status, please contact Jeanine Burmania at or 608-960-9846.
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