Technology Listings

Compensated RF Pulse to Provide T1rho Weighting to Medical Images Made Using Nuclear Magnetic Resonance


Method to improve medical imaging ability.

Technical Summary

This invention is a "pre-pulse" that can be added to most existing imaging pulse sequences. It produces image contrast between tissues having different T1rho values. Muscle (short T1rho) is made darker then blood (long T1rho), which aids in imaging the heart. This pulse differs from the majority of earlier T1rho methods serving as a source of image contrast in that it is compensated against spatial variations of the main imaging field. These variations cause regional loss of magnetization (the source of image signal) in a way independent of T1rho (losses therefore not contributing to contrast). When imaging flowing blood, this problem is exacerbated and no longer just regional. This invention overcomes these difficulties by providing a new method of magnetizing the object.

Patent Information
App Type Country Serial No. Patent No. File Date Issued Date Expire Date
Utility(parent) United States 08/515,679 5,614,826 8/18/1995 3/25/1997 8/18/2015
Tech ID: 95032
Published: 2/24/2009

Cliff Michaels
Assistant Director
Emory University

W. Thomas Dixon