Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
a) Plot of water signal vectors during head motion. Each solid line represents the water signal of a single FID in the complex plane (total 32 FIDs). The length of some of the vectors is decreased (1a), probably due to motion-induced attenuation during fast movements; b) MR spectrum from coherent (blue) and incoherent averaging (red). When using the individual signals represented in 1a (incoherent averaging), the phase of the individual FIDs is random, leading to incoherent averaging.
