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Clinical Imaging of Microwave Mammography
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Multislice radio-frequency current density imaging.

Dinghui Wang1, Tim P DeMonte, Weijing Ma

  • 1Department of Electrical and Computer Engineeringand Institute of Biomaterial and Biomedical Engineering, University of Toronto,Toronto, ON, M5S 3G9 Canada. dinghui.wang@utoronto.ca

IEEE Transactions on Medical Imaging
|January 20, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces multislice radio-frequency current density imaging (RF-CDI), a novel MRI technique. It enables noninvasive, multi-slice current density mapping, advancing imaging capabilities for various applications.

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Electrical Engineering

Background:

  • Radio-frequency current density imaging (RF-CDI) is an MRI technique for noninvasive current density measurement.
  • Existing RF-CDI methods are limited to single-slice imaging.
  • Clinical MRI scanners are widely available.

Purpose of the Study:

  • To develop and demonstrate the first multislice RF-CDI sequence on a clinical 1.5 T MRI scanner.
  • To reconstruct multislice RF current density images.
  • To investigate the impact of MRI noise on multislice RF-CDI sensitivity.

Main Methods:

  • Implementation of a novel multislice RF-CDI sequence on a 1.5 T clinical MRI system.
  • Reconstruction of multislice RF current density images using phantom data.
  • Theoretical analysis, numerical simulations, and phantom experiments to assess noise influence.

Main Results:

  • Successful reconstruction of multislice RF current density images for two phantoms.
  • Demonstration of RF-CDI capability beyond single-slice imaging.
  • Quantification of MRI random noise effects on measurement sensitivity.

Conclusions:

  • The developed multislice RF-CDI sequence is feasible on a clinical MRI scanner.
  • This advancement enables comprehensive current density mapping in multiple slices.
  • Understanding noise impact is crucial for optimizing multislice RF-CDI performance.