We try using the pulse sequence shown in Figure P12.2 to image the human brain. A pulse...

We try using the pulse sequence shown in Figure P12.2 to image the human brain. A pulse is applied to the brain while in equilibrium.

Suppose the duration of the RF pulse is negligible. The FID signal is sampled at time and the pulse repetition interval is

If not, what modification is needed to obtain -weighted images?

(b) Sketch the modified pulse sequence.

(c) Provide some reasonable values of tip angle, and other parameters that should be used in the new pulse sequence.