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susceptibility_artifact [2019/08/18 21:05] (current)
administrador created
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 +====== Susceptibility artifact ======
 +The magnetic field distortions created by [[susceptibility]] effects result in variations in precessional frequency across the patient and even within individual voxels. These frequency changes, in turn, produce signal loss from T2*-dephasing and spatial mismapping of the MR signal. ​ The MR imaging characteristics reflect both of these physical mechanisms: geometric distortion with focal areas of signal void and regions of very bright signal resulting from "​piling up" signal assigned to the wrong areas.  ​
susceptibility_artifact.txt ยท Last modified: 2019/08/18 21:05 by administrador