The present disclosure relates to a magnetic resonance imaging (MRI) radio frequency (RF) array coil that includes first and second physical RF coils inductively coupled. A first matching circuit and a second matching circuit are coupled to the first physical RF coil and the second physical RF coil, respectively, and are coupled in a parallel configuration at a first RF port. A third matching circuit and a fourth matching circuit are coupled to the first physical RF coil and the second physical RF coil, respectively, and are coupled in an anti-parallel configuration at a second RF port. A first logical RF coil is formed by the first and second physical RF coils and the first and second matching circuits. A second logical RF coil, which is decoupled from the first logical RF coil, is formed by the first and second physical RF coils and the third and fourth matching circuits.

Disclosed is a single-sided magnetic imaging apparatus, comprising a permanent magnet, wherein a Z axis is defined through the permanent magnetic into a field of view. The single-sided magnetic imaging apparatus further comprises an electromagnet, a gradient coil set, a radio frequency transmission coil, a radio frequency reception coil, and a power source. The power source is configured to generate an electromagnetic field in the field of view along the Z axis. The electromagnetic field comprises a field gradient in the field of view, wherein a timing of the radio frequency transmission coil is configured to target a location within the field gradient in the field of view.

Provided is a quad-core radio-frequency coil circuit. The quad-core radio-frequency coil circuit includes a coil module (1) and a front-end module (2). The coil module (1) is configured to receive a nuclear magnetic test signal and, according to the nuclear magnetic test signal, generate an induction signal. The front-end module (2) is connected to the coil module (1) and configured to generate the nuclear magnetic test signal and collect the induction signal.

A transmitter for a magnetic resonance (MR) system, such as nuclear magnetic resonance (NMR) system, is described herein. The transmitter includes a coil for applying NMR pulse sequences to a substance. The coil includes a first coil section and a second coil section. The first coil section and second coil section pass current in opposite polarity. The transmitter may also include a transmitter circuit for generating the NMR pulse sequences and providing the NMR pulse sequences to the coil. The transmitter circuit includes a first switch that selectively powers the first coil section and a second switch that selectively powers the second coil section. Operation of the first switch and the second switch generates the NMR pulse sequences.

This disclosure generally relates to stable water isotope labeling followed by detection via MRI (swiMRI), including deuterium MRI (dMRI) and .sup.17O MRI, for visualizing rapidly dividing immune cells within target and/or lymphoid organ/s and/or tissues affected by chronic graft-versus-host disease (cGVHD). Using deuterated water labeling, followed by dMRI, a distinction in deuterium signal was detected in a target organ (e.g. liver) of the cGVHD-affected mice compared to unaffected mice, i.e. syngeneic HSCT recipient mice, where the host and donor are matched, and normal (unmanipulated) mice.

An MRI system receive coil arrangement 3 for use with a main MRI scanner arrangement. The arrangement includes at least one primary receive coil 6 having a first impedance at a predetermined frequency and a first size defined by a cross-sectional area bounded by the primary receive coil and at least one auxiliary receive coil 7 having a second impedance at said predetermined frequency and a second size defined by a cross-sectional area bounded by the auxiliary receive coil wherein the first impedance is lower than the second impedance and the first size is larger than the second size.

In a method and apparatus for acquiring a magnetic resonance image data set of a scan area of an examination subject, the image data are acquired with a magnetic resonance apparatus having a transmitter coil that emits a radio-frequency signal having at least two transmission channels so that different polarizations of the radio-frequency signal are produced, and a magnetic resonance sequence is used to acquire raw data for the magnetic resonance image data set, wherein raw data are acquired during at least two scanning operations with the magnetic resonance sequence, with different polarizations of the radio-frequency signals being used for at least two of the at least two scanning operations, following which the magnetic resonance image data set is determined by averaging the raw data.

A system includes a multi-nuclear magnetic resonance (MR) receiving coil, wherein the receiving coil includes a frequency tuning component configured operate the receiving coil at either a first frequency or a second frequency. The receiving coil also includes an impedance matching component configured to maintain a substantially constant impedance of the receiving coil when the receiving coil is operated at either the first frequency or the second frequency. Furthermore, the receiving coil is configured to measure a first nucleus when operated at the first frequency, and wherein the receiving coil is configured to measure a second nucleus when operated at the second frequency.

Disclosed is a magnetic resonance imaging (MRI) system. The disclosed MRI system includes a system controller capable of separately acquiring MR image signals of different elements existing in an object. The system controller includes a first system controller capable of acquiring an MR signal of a first element, and a second system controller capable of acquiring an MR signal of a second element different from the first element. The first system controller and the second system controller are physically separated. The first system controller and the second system controller control a first radio frequency (RF) coil element and a second RF coil element of an RF coil, respectively.

An MRI scanner and a method for operation of the MRI scanner are provided. The MRI scanner has a first receiving antenna for receiving a magnetic resonance signal from a patient in a patient tunnel, a second receiving antenna for receiving a signal having the Larmor frequency of the magnetic resonance signal, and a receiver. The second receiving antenna is located outside of the patient tunnel or near an opening thereof. The receiver has a signal connection to the first receiving antenna and the second receiving antenna and is configured to suppress an interference signal by the second receiving antenna in the magnetic resonance signal received by the first receiving antenna.