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Electron beam computed tomographic scanner system with helical or tilted target, collimator, and detector components to eliminate cone beam error and to scan continuously moving objects

  • US 6,735,271 B1
  • Filed: 11/28/2000
  • Issued: 05/11/2004
  • Est. Priority Date: 11/28/2000
  • Status: Expired due to Fees
First Claim
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1. In a scanning electron beam computed tomographic system in which an electron beam is scanned across a target with a constant velocity to emit a fan beam of X-rays some of which X-rays may pass through an area defined by a reconstruction radius and having an object therein to be detected by a detector array, a method of eliminating cone beam error, comprising the following steps:

  • (a) configuring and disposing said target and said detector array such that active regions of said target and said detector array are always diametrically opposite from each other;

    wherein step (a) includes providing a planar target and a planar detector array and tilting said target and said detector array relative to a transverse axis that may include a vertical axis of said system to approximate a true helix configuration.

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