Spectral-Tagging Technique for Improving Resolution of Dynamic Echo-Planar Imaging

Case ID:

This invention is a spectral-tagging method that allows for 3X faster speed of acquisition with improved resolution of the targeted physiology. The invention improves upon echo-planar imaging by band-pass filtering different signals to reconstruct a specific spectral peak, resulting in high quality images without aliasing artifacts from multi-band echo-planar imaging signals.


Echo-planar imaging is the most widely used pulse sequence for dynamic magnetic resonance imaging. The drawbacks with this process are that conventional protocols result in artifacts, multi-band imaging is not feasible for in-plane parallel imaging, and simultaneous echo refocusing results in compromised spatial-resolution and accuracy when used with multi-band imaging. Therefore there is a need for improved echo-planar imaging spatial-temporal resolution for accurately capturing physiology.



  • Healthcare MRI equipment
  • Space exploration
  • Optics


  • Produces high quality images where conventional echo-planar imaging protocols are limited
  • The method is compatible with and can be integrated into conventional echo-planar imaging protocols
  • Shorter readout acquisition window and echo-spacing time
Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Nan-kuei Chen