Flow Artifact Compensation - Video Lesson

Hey, everybody. Welcome back to today's lesson on artifacts in MRI. This lesson focuses on flow artifact compensation, which are strategies used to manage flow related effects in MRI. Each technique addresses flow from a different physical or timing perspective and selecting the correct method depends on the clinical question and anatomy being imaged. Understanding why flow causes imaging issues and how compensation techniques work allow the MRI technologist to deliberately reduce artifacts or when appropriate exploit flow for clinical information. Let's get started. Remember, in MRI, flowing spins such as blood or cerebrospinal fluid behave differently from stationary tissue. These differences can introduce image artifacts, signal loss or misregistration that degrade diagnostic quality. Compensation techniques aim to either rephrase flowing spins, suppress their signal, or acquire data fast enough that motion effects are minimized. We will