Multi‐echo dipole inversion for magnetic susceptibility mapping

Quantitative Susceptibility Mapping Using the Multiple Dipole-inversion Combination with k-space Segmentation Method

Quantitative susceptibility mapping (QSM) is a new magnetic resonance imaging (MRI) technique for noninvasively estimating the magnetic susceptibility of biological tissue. Several methods for QSM have been proposed. One of these methods can estimate susceptibility with high accuracy in tissues whose contrast is consistent between magnitude images and susceptibility maps, such as deep gray-matt...

Integrated strategy for improving functional connectivity mapping using multiecho fMRI.

Functional connectivity analysis of resting state blood oxygen level-dependent (BOLD) functional MRI is widely used for noninvasively studying brain functional networks. Recent findings have indicated, however, that even small (≤1 mm) amounts of head movement during scanning can disproportionately bias connectivity estimates, despite various preprocessing efforts. Further complications for inte...

Dipole Mapping on Magnetic Resonance Images of Patients with Epilepsy

| The commercial software BESA (Brain Electromagnetic Source Analysis) is used to solve the inverse eld problem, i.e. starting with the potentials on the scalp, the electric source is located in the cortex. The exact electrode positions on the patient's head are obtained automatically from the magnetic resonance (MR) images with a custom designed program. Using these exact locations instead of ...

Automatic Mapping Extraction from Multiecho T2-Star Weighted Magnetic Resonance Images for Improving Morphological Evaluations in Human Brain

Mapping extraction is useful in medical image analysis. Similarity coefficient mapping (SCM) replaced signal response to time course in tissue similarity mapping with signal response to TE changes in multiecho T2-star weighted magnetic resonance imaging without contrast agent. Since different tissues are with different sensitivities to reference signals, a new algorithm is proposed by adding a ...

Dipole - Dipole Interactions of Charged - Magnetic Grains