A Novel Volume CT With X-Ray on a Trough-Like Surface and Point Detectors on Circle-Plus-Arc Curve

Abstract

A novel imaging mode of cone-beam volume CT is proposed in this paper. It adopts a raster scanning x-ray source on a trough-like surface, and a group of point detectors distributing on a large circle plus an orthogonal arc. Through a single rotation of the trough-like surface, a full set of projection data can be acquired and an accurate 3D image can be reconstructed. This paper describes the shape and dimension of the trough-like x-ray source and the configuration of detectors in detail, proves that this structure is satisfied with the completeness condition, and gives a reconstruction algorithm of 3-D image adapting to this structure. Computer simulations show that this structure could achieve optimal result in meeting the following requirements: minimum time of rotation, less Compton scatter, and fast image reconstruction speed while keeping the completeness condition to be realized.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA412227

Entities

People

  • Haowei Xu
  • T. G. Zhuang

Organizations

  • Shanghai Jiao Tong University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Biomedical Engineering
  • Computational Complexity
  • Computer Simulations
  • Coordinate Systems
  • Detection
  • Detectors
  • Engineering
  • Equations
  • Geometry
  • Image Reconstruction
  • Orbits
  • Rotation
  • Simulations
  • Three Dimensional
  • X Rays
  • X-Ray Computed Tomography

Fields of Study

  • Physics

Readers

  • Aerospace Propulsion Engineering.
  • Computer Vision.
  • Image Processing and Computer Vision.