S09-042 MRI - A Frequency Offset Cartesian Feedback System An amplifier system providing improved Cartesian feedback is provided. A complex band pass error amplifier is provided. Marta Zanchi Greig Scott
S09-382 Frequency Selective Negative Feedback to Avoid Preamplifier Oscillation in Multi-Channel Arrays A system and method for generating preamplifier feedback in magnetic resonance imaging (MRI) systems are provided. Fraser Robb Thomas Grafendorfer Greig Scott Shreyas Vasanawala James Tropp Paul Calderon
S08-179 MRI - Ensuring Implant Safety During MRI Procedures Using Reversed RF Polarization A method for detecting coupled RF current magnetic resonance (MR) objects in a body and determining MR risk is provided. The body is scanned with reverse circularly polarized RF. William Overall Greig Scott