Stationary Digital Tomosynthesis System for Early Detection of Breast Tumors

Abstract

Stable operation of the new developed s-DBT scanner at 28kVp anode voltage and 38mA tube current was demonstrated with extended lifetime and good source-to-source consistency. For standard imaging protocol of 15 views, 14 degree, 100mAs dose, and 2x2 detector binning the projection resolution along scanning direction is increased from 4.0 lps/mm (at 10% MTF) in DBT to 5.1 lps/mm in s-DBT at magnification factor of 1.1. The improvement is more pronounced for faster scanning speed, wider angular coverage, and smaller detector pixel size. The scanning speed depends on the detector, the number of views, and the imaging dose. With 240ms detector readout time the s-DBT system scanning time is 6.3s for a 15-view, 100mAs scan regardless of the angular coverage. The scanning speed can be reduced to less than 4s when detectors become faster. Initial phantom studies showed good quality reconstructed images.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 2012
Accession Number
ADA589204

Entities

People

  • Xin Qian

Organizations

  • University of North Carolina at Chapel Hill

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Acquisition
  • Algorithms
  • Aluminum Oxides
  • Breast Cancer
  • Carbon Nanotubes
  • Department Of Defense
  • Detection
  • Detectors
  • Diagnostic Imaging
  • Electrical Equipment
  • Electron Beams
  • Equations
  • Field Emission
  • North Carolina
  • Three Dimensional
  • Tomography
  • X Rays

Fields of Study

  • Medicine
  • Physics

Readers

  • Battery Technology and Engineering
  • Human-Computer Interaction (HCI).
  • Nuclear and Radiation Engineering.