The time between a 90-degree pulse and the echo during a spin-echo pulse sequence is
A)spin density ($\rho$).
B)repetition time (TR).
C)echo time (TE).
D)inversion time (TI).

Question

Quizplus · Accepted Answer

The time between a 90-degree pulse and the echo during a spin-echo pulse sequence is known as the echo time (TE). This is the time that it takes for the signal to be emitted by the excited protons and then return to the receiver coil. Choices A, B, and D are not correct, as spin density, repetition time, and inversion time respectively, all refer to different aspects of the pulse sequence.

The Time Between a 90-Degree Pulse and the Echo During ρ\rhoρ

The Time Between a 90-Degree Pulse and the Echo During $\rho$