Jeo002

Spin Echo

100

The main characteristic of a Spin Echo sequence is to have a ____ RF pulse.

180

200

A Spin Echo sequence starts with a ___ RF pulse

90

300

The main advantage of a Spin Echo sequence is to be able to produce a "true" ____ image contrast

T2

400

In Spin Echo ___ RF pulses are used

2

500

In Spin Echo, the 180 RF pulse is turned on in between the 90 RF pulse and the ____

Echo

Gradient Echo

100

In Gradient Echo it/they is/are used ___ RF pulse/s

1

200

The GRE sequence is characterized by the first RF pulse being <= _____ degrees and by the absence of the ___ RF pulse

90 180

300

A GRE sequence will produce a ____ image contrast instead of a true T2 image contrast

T2*

400

The main advantage of a GRE sequence is to allow a longer|shorter scan time and to detect fresh ________

Shorter Hemorrage

500

Image contrast in GRE is regulated by TR, TE, and _____

Flip Angle