University of Minnesota

Xiaoping Wu

Kamil Ugurbil

Pierre-Francois Van De Moortele

J Thomas Vaughan, Jr

Gregor Adriany

Anand Gopinath

Heather Diane Orser

Carl J Snyder

Peter M Anderson

Sebastian Schmitter

Lance DelaBarre

Edward Auerbach

Can E Akgun

Jinfeng Tian

J Thomas Vaughan

John Strupp

Peter M Andersen

Christopher C Olson

Gregor Adiany

Xiaodong Ma

Lance Delabarre

Chris Olson

Magnetic resonance images with improved image quality consistent with those obtained using parallel radio frequency ('RF') transmission (“pTx”) techniques are generated from data acquired using single transmission hardware (e.g., single channel RF transmission). A deep-learning framework is used to train a deep neural network to convert images obtained with single transmission into pTx-like images. The pTx-like images have reduced signal variations and dropouts that may otherwise be attributable to B1+ inhomogeneities.

Parallel transmission magnetic resonance imaging with a single transmission channel RF coil using deep learning

A method for designing one or more multichannel, multiband radio frequency ('RF') pulses for use with a magnetic resonance imaging ('MRI') system is provided. The method includes determining a number of RF amplitude modulations and a number of RF phase modulations for each channel in a multichannel RF coil by minimizing an objective function that includes a complex-valued vector. The objective function also contains a system matrix that accounts for both a spatial sensitivity profile of each channel in the multichannel RF coil and a magnetic field map for each excitation band in the multiband RF pulse.

Multiband RF/MRI pulse design for multichannel transmitter

Systems and methods for designing and/or using radio frequency ('RF') pulses for in-vivo MRI applications, where the RF pulses are robust against errors due to physiological motion of organs during the respiratory cycle. For example, RF pulses are designed based on multi-channel B1+ maps correlated to different positions of the respiratory cycle.

Systems and methods for designing magnetic resonance imaging radio frequency pulses that are robust against physiological motion errors

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

Growing community of inventors

Shoreview, MN, United States of America

Xiaoping Wu