Purpose Automated lesion segmentation is increasingly used in acute ischemic stroke magnetic resonance imaging (MRI). We explored detail the performance of apparent diffusion coefficient (ADC) thresholding for delineating baseline diffusion-weighted (DWI) lesions. Methods Retrospective, exploratory analysis prospective observational single-center 1000Plus study from September 2008 to June 2013 ...

PURPOSE To characterize the diffusion coefficient of human blood for accurate results in intravoxel incoherent motion imaging. METHODS Diffusion-weighted MRI of blood samples from 10 healthy volunteers was acquired with a single-shot echo-planar-imaging sequence at body temperature. Effects of gradient profile (monopolar or flow-compensated), diffusion time (40-100 ms), and echo time (60-200 ...

1. Introduction PFG NMR experiment is in principle capable to provide important transport-structural parameters of system consisting of a liquid confined in a porous matrix such as surface-to-volume ratio and tortuosity. The apparent diffusion coefficient is easily obtained in the case of Gaussian shape of the diffusion propagator. Dependence of these values on the diffusion time in a short tim...