Motion‐compensated gradient waveforms for tensor‐valued diffusion encoding by constrained numerical optimization SZCZEPANKIEWICZ et al.

Abstract

1## INTRODUCTION Tissue movement during diffusion encoding can lead to phase dispersion that is erroneously attributed to diffusion or cause gross signal dropout. For example, the relatively slow and incoherent movement of blood in capillaries has a measurable impact on the diffusion-weighted signal at low b-values and carries information about the vasculature and can be mistaken for fast diffusion, or so called “pseudo diffusion.”[mrm28551-bib-0001] Other sources of motion include cardiac and pulmonary motion. These influence diffusion measurements in the brain by arterial pulsation[mrm28551-