MR measurement of alloy magnetic susceptibility: Towards developing tissue-susceptibility matched metals

Tissue Magnetic Susceptibility Matched Pyrolytic Graphite Foam for Improved MRI

Overview of Methods for Magnetic Susceptibility Measurement

In this paper, an overview of methods for magnetic susceptibility measurement is described. Older methods — Faraday’s scale and Guoy’s scale are based on force effects of magnetic filed to magnetized specimen. Another methods — Inductive methods, use change of coil inductance, when magnetically conductive specimen is embedded. Modern methods (SQUID magnetometer) benefits from quantum interferen...

Susceptibility-matched H2O NMR probes for magnetic field monitoring

Measuring magnetic field profiles real-time during imaging acquisition promises reduced level of artifacts arising from B0 offsets, gradient imperfections and/or eddy-currents. Recently, efforts have been made to develop field sensors accurate enough for magnetic field monitoring (MFM) in MRI. The best results so far have been achieved by monitoring phase evolution of a signal from small NMR sa...

Magnetic susceptibility-weighted MR phase imaging of the human brain.

BACKGROUND AND PURPOSE MR gradient echo imaging is sensitive to the magnetic susceptibility of different tissue types. The purpose of this study was to investigate the diagnostic potential of MR phase imaging of the human brain. METHODS High-spatial-resolution, T2*-weighted, single-echo images were acquired in five volunteers and one patient with a brain tumor on a 1.5T system by applying a 3...

Implications of tissue magnetic susceptibility-related distortion on the rotating magnet in an MR-linac design.

PURPOSE One of the recently published concepts that combine the soft-tissue imaging capabilities of MRI with external beam radiotherapy involves the rigid coupling of a linac with a rotating biplanar low-field MR imaging system. While such a system would prevent possible image distortion resulting from relative motion between the magnet and the linac, the rotation of the magnet around the patie...