Tracer kinetic model-driven registration for dynamic contrast enhanced MRI time series

Med Image Comput Comput Assist Interv. 2005;8(Pt 1):91-8. doi: 10.1007/11566465_12.

Abstract

Motion during time-series data acquisition causes model-fitting errors in quantitative dynamic contrast-enhanced (DCE) MRI studies. Motion correction techniques using conventional registration cost functions may produce biased results because they were not designed to deal with the time-varying information content due to contrast enhancement. We present a locally-controlled, 3D translational registration process driven by tracer kinetic modeling that successfully registers abdominal DCE-MRI data at high temporal resolution and compare this method to a similar approach based on registration to the time series mean image in data from 8 patients. When the registration is driven by an appropriate model, we find significant improvements in model-fitting. Also, model-driven registration influences parameter estimates and reduces repeat study variability in measurements of blood volume.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abdomen / anatomy & histology*
  • Algorithms
  • Contrast Media*
  • Humans
  • Image Enhancement / methods*
  • Image Interpretation, Computer-Assisted / methods*
  • Imaging, Three-Dimensional / methods*
  • Kinetics
  • Magnetic Resonance Imaging / methods*
  • Models, Biological
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Subtraction Technique*

Substances

  • Contrast Media