Echo-planar imaging of intravoxel incoherent motion.

摘要: The recently established single-shot technique of echo-planar imaging intravoxel incoherent motion (IVIM) for determining and the variations microscopic motions water has been applied to studies perfusion in phantoms vivo diffusion cat human brains. phantom results demonstrate that levels comparable with those found have easily observable reproducible effects on signal amplitude are consistent previous IVIM theory. Reliable measurements coefficient various types brain tissue obtained. white matter existence anisotropic oriented bundles myelinated nerve fibers. gray can be fitted theory suggest a value up 14% fraction contributed by randomly perfusing fluid normal cerebral cortex.