University of Minnesota

Peter M Andersen

Kamil Ugurbil

John Strupp

J Thomas Vaughan, Jr

Anand Gopinath

Gregor Adriany

Pierre-Francois Van De Moortele

Heather Diane Orser

Carl J Snyder

Lance DelaBarre

Can E Akgun

Jinfeng Tian

Xiaoping Wu

J Thomas Vaughan

Christopher C Olson

Chris E Olson

Gregor Adiany

A magnetic resonance system is disclosed. The system includes a transceiver having a multichannel receiver and a multichannel transmitter, where each channel of the transmitter is configured for independent selection of frequency, phase, time, space, and magnitude, and each channel of the receiver is configured for independent selection of space, time, frequency, phase and gain. The system also includes a magnetic resonance coil having a plurality of current elements, with each element coupled in one to one relation with a channel of the receiver and a channel of the transmitter. The system further includes a processor coupled to the transceiver, such that the processor is configured to execute instructions to control a current in each element and to perform a non-linear algorithm to shim the coil.

High field magnetic resonance

An excitation and detection circuit having individually controllable elements for use with a multi-element radio frequency coil. Characteristics of the driving signal, including, for example, the phase, amplitude, frequency and timing, from each element of the circuit is separately controllable using small signals. Negative feedback for the driving signal associated with each coil element is derived from a receiver coupled to that coil element.

Parallel transceiver for nuclear magnetic resonance system

Growing community of inventors

Maple Plain, MN, United States of America

Peter M Andersen