MRI

Question 1

Frequency encoding gradient is turned on at time of __

Answer 1

TE

Unlike the phase encoding gradient, the frequency encoding gradient does not change with each acquisition. Increasing the slope of the frequency encoding gradient (larger readout bandwidth) results in decreased signal-to-noise ratio.

Question 2

When is phase encoding gradient turned on?

Answer 2

Phase encoding gradient is turned on at some point between the excitation pulse and TE.