Fast magnetization transfer MR imaging

Simon Vinitski, Feroze B. Mohamed, Scott Faro, Carlos Gonzalez, Hector V. Ortega, Donald G. Mitchell, Eric K. Outwater

Research output: Contribution to journalConference articlepeer-review

Abstract

We have implemented a new magnetization transfer (MT) technique, to decrease total imaging time and thus improve efficiency of MT based MRI. By judiciously rescaling different RF pulses, and utilizing maximum transmitter gain, we were able to generate very short and powerful Mt pulse(s). MRI and MRA in normal and patients with MS were performed, with and without MT application. Phantom experiments indicated 1-2 kHz offset to be the optimal. MT based MRA demonstrated substantial improvement in conspicuity of small vessels with minimum increase in imaging time. MT based MRI showed 30% improvement in MT contrast as well. Importantly, both peak and average SAR values were within FDA approved safety limits.

Original languageEnglish (US)
Pages (from-to)580-581
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume16
Issue numberpt 1
StatePublished - Dec 1 1994
EventProceedings of the 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 (of 2) - Baltimore, MD, USA
Duration: Nov 3 1994Nov 6 1994

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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