Frequency Encoding - Video Lesson

Hey, everybody. Welcome to today's lesson on spatial encoding in MRI. This lesson focuses on frequency encoding, including how and when it occurs in the imaging process. Frequency encoding determines how we delineate the signal across a slice being imaged, so understanding this concept is important. Remember spatial encoding in MRI is how we map the location of signals within the body to create a detailed image. Spatial encoding is performed by the gradient coils in the MRI scanner, which superimpose external magnetic fields on b sub zero, creating what is called a gradient magnetic field. Spatial encoding involves slice selection, frequency encoding, and phase encoding. Let's take a closer look at the process of frequency encoding. Frequency encoding is a method used to encode spatial information of a slice along its long axis. Frequency encoding encodes