ETACT - An Innovative Approach to Scintimammography

Abstract

This project investigates the use of a novel approach to scintimammography (SMM) known as emission tuned aperture computed tomography (ETACT). In ETACT, a series of projections of the radionuclide distribution in the breast are acquired with fiducial markers. These data are reconstructed into tomographic slices. The hypothesis of this project is that ETACT will increase the diagnostic accuracy of SMM, and can be applied in a simple and practical manner. We have developed simulation models and have used these tools to investigate aperture size, angular disparity, number of projections, and the effect of attenuation and scatter. Apertures of 3-4 mm were determined to be optimal for ETACT. Smaller angular disparity of the projections led to slightly improved contrast but lower axial resolution.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2002
Accession Number
ADA412775

Entities

People

  • Frederic H. Fahey

Organizations

  • Wake Forest School of Medicine

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Accuracy
  • Cameras
  • Computer Simulations
  • Data Acquisition
  • Detection
  • Detectors
  • Diagnostic Imaging
  • Geometry
  • Health Services
  • Medical Personnel
  • Photographs
  • Prostheses And Implants
  • Simulations
  • Three Dimensional
  • Tomography
  • Two Dimensional
  • X-Ray Computed Tomography

Fields of Study

  • Medicine
  • Physics

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Medical Imaging.