Question

(1) Compute the resonant frequency of 31P, 1H, and 2H at 2.0 Tesla and at 3.0 Tesla

(2)

(a) Given an RF pulse with a bandwidth of 1000 Hz (this is f, not omega) centered at the Larmor frequency for a 2.0 Tesla field, what slice select gradient strength is needed in order to excite a 2-mm slice in a homogeneous water phantom?




(b) (2 pts) How would you excite a 20 mm slice with the exact same RF pulse?





(c) (3 pts) How would you excite a 20 mm slice with the exact same gradients (you can change the pulse sequence.

Answer 1