記憶度
6問
14問
0問
0問
0問
アカウント登録して、解答結果を保存しよう
問題一覧
1
z gradient
maxwell
2
What is the purpose of RF transmitter
Transmits rf energy to excite the nucleus
3
Gold Standard Pulse Sequence
spin echo
4
Signal to noise relationship
Cleared and more detailed images
5
Detecting For early stroke
DWI
6
provide better homogeneity of the RF in the area of interest, commonly used for imaging of the knee. what coil?
Paired Saddle Coil
7
Purpose of faraday cage
Shielding against RF interference
8
What happens during MRI quench?
Liquid cryogen would evaporate
9
Which term refers to an item that poses no hazard
MR Safe
10
What is the role of DTI?
Location and orientation of your white matter plaques
11
Which imaging technique suppresses your csf?
FLAIR
12
What is the key disadvantage of FSE fast spin echo?
Prone to imaging artifacts because its fast
13
The contrast agent of gadolinium?
B. manganese?
14
How does an increase in repetition time affect your signal to noise?
Increases SNR
15
Purpose of fat suppression technique like STIR (short tau inversion recovery)
Suppressing from adipose tissue
16
Which coil offers the best RF homogeneity
Bird cage (for large body parts)
17
What plane is X gradient
Sagittal
18
What is the primary function of gradient coils?
To provide spatial encoding of the MR signals
19
Factor that directly increases the voxel
Increase Slice thickness
20
Flip angle
Increases SNR
21
Pulse sequence involving 180° inversion followed by 90 deg pulse
Inversion Recovery
22
Which mri technique used to evaluate blood oxygen levels
Bold Imaging
23
Suppress fat
STIR
24
What is the cause of multiple sclerosis
DIR
25
Primary purpose of gadolinium
Shorten the T1 of relaxation time
26
Combination of several fat suppression
Dixon
27
Most common adverse reaction
Headache
28
Unwanted currents
Eddy Currents
29
Dangerous projectiles that contains missile effect
D
30
Artifacts from patient move
Ghosting
31
Pulse sequence primarily used for mri
Bold Imaging
32
Term for the collection of all signals
K Shell
33
Imaging turbulent blood flow
Fast Gradient Recoil Echo
34
Significance of t1 relaxation
Longitudinal Relaxation
35
Influencing the other t of your t2 relaxation
Spin Spin
36
Increase Echo Time
Increase t2 weighted contrast
37
Freezes motion in cardiac mri
Echo Planar Imaging
38
Made application of EPI
Dynamic …
39
External source of RF
RF Interference
40
If quench does occur
Evacuate