Conventional Spin-echo - Video Lesson

Hey, everybody. Welcome to today's lesson on pulse sequences in MRI. This lesson focuses on conventional spin echo pulse sequences. We will discuss how conventional spin echo sequences work and discuss their advantages and disadvantages. Conventional spin echo pulse sequences are a fundamental concept and process in MRI, so understanding how they work is important. Let's begin. Conventional spin echo or CSE is a pulse sequence used in MRI to generate high quality images by rephrasing spin dephrasing caused by inhomogeneities, variations in the magnetic field and spin spin interactions. Initially, a ninety degree radio frequency or RF pulse tips the net magnetization vector or NMV from its alignment with the main magnetic field b sub zero into the transverse plane b sub one. This action also causes the spins to precess in phase around the b sub.