MRI Quiz Ch 3 and 4

Which of the following describe an RF configuration 90 - 180 - 180 - 180 - 90 ?

Fast spin echo

STIR sequences can suppress the signal from all of the following EXCEPT:

Fluid(CSF)

The gradient that is on during the production of the echo is the:

Frequency

In a fast spin echo sequence, the effective TE is the echo that is performed with the

Low amplitude(high signal) phase encoding gradients

Which of the following use stimulated echoes?

Steady state three precession

Gradient echo sequences can yield either T1 or T2* characteristics.

True

An inversion recovery (IR) spin echo sequence begins with a:

180° RF pulse

A typical spin echo (SE) sequence uses pulses:

90°, 180°

Which of the following best describes a SE sequence?

90°, 180°

Which of the following best describes an EPI sequence?

A train of gradient echoes

Which of the following best describes an FSE sequence?

A train of spin echoes

A typical gradient echo sequence begins with a:

Alpha pulse( variable flip angle) That varies with desired image contrast

A FLAIR sequence is utilized to suppress the signal from:

CSF

Gradient echo sequences acquired for high signal from FLUID are known as all of the following EXCEPT:

Incoherent gradient echoes

Which of the following use a spoiler RF and/or gradient?

Incoherent gradients

A gradient echo sequence in which any residual transverse magnetization is removed prior to the next excitation pulse is known as:

Incoherent/spoiled

Phase encoding is performed

Prior to the frequency encoding

Which of the following is a problem found with steady state imaging?

Residual transverse magnetism

In a Fast spin echo (FSE) sequence, blurring can be reduced by the selection of

Shorter ETL

Which the following are only seen with a gradient echo sequence?

T2* contrast

In a fast spin echo sequence, the effective TE are the echoes that are placed in:

The center of K space, low amplitude phase encoding gradients

Which the following collect patient information very quickly using alternating phase and frequency encoding gradients!

echo planar imaging