Apparent water diffusion measurements in electrically stimulated neural tissue

Reproducibility of Apparent Diffusion Coefficient Measurements in Malignant Breast Masses

This study aimed to evaluate the reproducibility of apparent diffusion coefficient (ADC) measurements in malignant breast masses, and to determine the influence of mammographic parenchymal density on this reproducibility. Sixty-six patients with magnetic resonance findings of the mass were included. Two breast radiologists measured the ADC of the malignant breast mass and the same area on the c...

Water and Metabolite Diffusion in Tissue

OVERVIEW In Vivo MR Spectroscopy at large diffusion weighting can specifically look at intracellular components of tissue that are characterized by restricted diffusion and a small apparent diffusion coefficient. Beyond water, H MRS of metabolites at large diffusion weighting proved to be very useful to separate extraand intracellular contributions of metabolites in the brain. Further applicati...

Signal transduction in electrically stimulated bone cells.

BACKGROUND Electrical stimulation is used to treat nonunions and to augment spinal fusions. We studied the biochemical pathways that are activated in signal transduction when various types of electrical stimulation are applied to bone cells. METHODS Cultured MC3T3-E1 bone cells were exposed to capacitive coupling, inductive coupling, or combined electromagnetic fields at appropriate field str...

Electrical characterization of polymeric insulation by electrically stimulated acoustic wave measurements

Widespread use of polymeric insulation has motivated interest in understanding the physics associated with the electrical aging process. Under DC bias, materials such as polyethylene (PE) and poly(methylmethacrylate) (PMMA) have been known to accumulate space charge. As charge builds up within the bulk, the electric field becomes modified with regions of higher and lower field. Detection of the...

Modelling of the Electrically Stimulated Cochlea