Time-Varying Gradient Basic: Pulse Sequences

Question 1

What is the first kind of scan that comes to mind when thinking about EPI (echo planar imaging)

Answer 1

DWI

Question 2

Which type of pulse sequence is likely to produce the least peripheral nerve stimulation?

Answer 2

Spin echos (SE)

Question 3

Which type of common sequence is likely to produce more stimulation?

Answer 3

DWI (which is a type of EPI)

Question 4

Does peripheral nerve stimulation come from RF pulses or gradient fields?

Answer 4

Gradient

Question 5

How will slice thickness influence peripheral nerve stimulation?

Answer 5

Thinner slices require a steeper gradient and therefore are more prone to PNS