MRI 2

29 Questions | By ZACKSMOM0312 | Updated: Mar 21, 2022 | Attempts: 1641

Questions

Settings

Create your own Quiz

Questions and Answers

1.

At a field strength of 1.0 tesla, the approximate T2 relaxation time for grey matter is what?
- A.
  
  100MS
- B.
  
  80MS
- C.
  
  90MS
2.

In a T2 weighted image, CSF has a ________ T2 relaxation time and therefore appears _______.
- A.
  
  Long, Bright
- B.
  
  Long, Dark
- C.
  
  Short, Dark
- D.
  
  Short, Bright
3.

At a field strength of 1.0 tesla, the approximate T2 relaxation time for renal cortex tissue is what?
- A.
  
  45MS
- B.
  
  50MS
- C.
  
  60MS
- D.
  
  70MS
4.

At a field strength of 1.0 tesla, the approximate T2 relaxation time for spleen tissue is what?
- A.
  
  60MS
- B.
  
  80MS
- C.
  
  90MS
- D.
  
  100MS
5.

When the phase encoding gradient is activated, steep slopes produce what type of signal amplitude?
- A.
  
  LOW
- B.
  
  HIGH
- C.
  
  MEDIUM
- D.
  
  STRONG
6.

A 180 degree RF pulse is used to ______ the dephasing net vector in the transverse plane.
- A.
  
  MAGNETIZE
- B.
  
  REFOCUS
- C.
  
  DECAY
- D.
  
  DELAY
7.

At a field strength of 1.0 tesla, the approximate T1 relaxation time for CSF is what?
- A.
  
  800MS
- B.
  
  1000MS
- C.
  
  2000MS
- D.
  
  2500MS
8.

At a field strength of 1.0 tesla, the approximate T2 relaxation time of fat is what?
- A.
  
  40
- B.
  
  50
- C.
  
  80
- D.
  
  90
9.

During the acquisition of axial images of the body with the phase direction A/P, frequency encoding is performed by which physical gradient?
- A.
  
  X
- B.
  
  Y
- C.
  
  Z
10.

At a field strength of 1.0 tesla, the approximate T1 relaxation time for muscle tissue is what?
- A.
  
  270
- B.
  
  480
- C.
  
  600
- D.
  
  680
11.

In a T1 weighted image, a short TR is used to do what?
- A.
  
  MAX T2
- B.
  
  MIN T2
- C.
  
  MAX T1
- D.
  
  MIN T2
12.

At a field strength of 1.0 tesla, the approximate T2 relaxation time for renal medulla tissue is what?
- A.
  
  90
- B.
  
  100
- C.
  
  140
- D.
  
  300
13.

During the acquisition of axial images of the body with the frequency direction L/R, phase encoding is performed by which physical gradient?
- A.
  
  X
- B.
  
  Y
- C.
  
  Z
14.

In a T2 weighted image, tissues with long T2 relaxation times appear ______.
- A.
  
  HYPERINTENSE
- B.
  
  HYPOINTENSE
- C.
  
  ISOINTENSE
15.

Which of the following logical gradients is known as the phase encoding gradient?
- A.
  
  X
- B.
  
  Y
- C.
  
  Z
16.

The range of frequencies that is sampled during frequency encoding is known as what?
- A.
  
  RECIEVE BANDWITH
- B.
  
  TRANSMIT BANDWITH
- C.
  
  GRADIENT SLOPE
- D.
  
  RF SLOPE
17.

The Y gradient alters the magnetic field strength along which axis?
- A.
  
  HORIZONTAL
- B.
  
  VERTICAL
- C.
  
  LONG
- D.
  
  SHORT
18.

During slice selection, the Y gradient is used to select slices in which plane?
- A.
  
  CORONAL
- B.
  
  AXIAL
- C.
  
  SAGITTAL
19.

At a field strength of 1.0 tesla, the approximate T1 relaxation time for spleen tissue is what?
- A.
  
  360
- B.
  
  380
- C.
  
  400
- D.
  
  480
20.

At a field strength of 1.0 Tesla, the approximate T1 relaxation time for blood is what?
- A.
  
  540
- B.
  
  680
- C.
  
  800
- D.
  
  1000
21.

The image parameter that primarily affects T1 weighting is known as what
- A.
  
  TE
- B.
  
  TR
- C.
  
  IR
22.

At a field strength of 1.0 tesla, the approximate T1 relaxation time for renal medulla tissue is what?
- A.
  
  520
- B.
  
  600
- C.
  
  680
- D.
  
  800
23.

At a field strength of 1.0 tesla, the approximate T1 relaxation time for renal cortex tissue is what?
- A.
  
  80
- B.
  
  270
- C.
  
  360
- D.
  
  390
24.

The X gradient alters the magnetic field strength along which axis
- A.
  
  HORIZONTIAL
- B.
  
  VERTICAL
- C.
  
  LONG
- D.
  
  SHORT
25.

The time between the 90 degree RF pulse and the spin echo signal in a spin echo pulse sequence is known as what?
- A.
  
  TR
- B.
  
  TE
- C.
  
  INVERSION TIME
- D.
  
  RELAXATION TIME