Mri Quiz Test

Front 1

final result of a perfusion study is..?

Back 1

Set of calculated images which indicates various flow.

Front 2

dynamic enhanced MRA of mesenteric arteires are performed using..?

Back 2

Incoherent

Front 3

Contrast in DWI imaging depends on..?

Back 3

Degree of molecular mobility is impaired

Sensibility to Bronwian motion

Direction of water diffusion

Front 4

2003 FDA RF absorption to the head to..?

Back 4

3.0 w/kg for 10 min.

Front 5

If TR in GRE echo is less than T2 this is a..?

Back 5

Steady state

Front 6

FSE #of shots is..?

Back 6

Phase encoding/ ETL

Front 7

Islet tumor is found in the..?

Back 7

Pancreas

Front 8

Structures comprises rotator cuff..?

Back 8

subcap, infra, supra, and teres

Front 9

Phagocytes blood cell is..?

Back 9

Leukocyte

Front 10

Hemangiomas is best visualized with..?

Back 10

Delayed images

Front 11

Liver cancer is best visualized with..?

Back 11

1st pass dynamic

Front 12

Difference in chemical shift is approximately..?

Back 12

3.5ppm

Front 13

TFCC tear is best visualized in what plane..?

Back 13

Coronal

Front 14

3rd ventricle is dilated and the 4th is not..?

Back 14

Aqueduct of sylvius

Front 15

"goal is to do no harm"

Back 15

Beneficence

Front 16

Phase encoding step is performed when..?

Back 16

Prior to frequency

Front 17

GRE requiring high signal from fluid is all except for..?

Back 17

Incoherent

Front 18

TE increased slices increased or decreased..?

Back 18

Decreased

Front 19

Source of infection where pathogens thrive enough to cause a threat is..?

Back 19

Reservoir

Front 20

Thin slices..?

Back 20

Steep slice selection

High amplitude slice selection

narrow tBW

Front 21

Low freq. (high amp. signal) ? data points in K-space at the start of the scan is aka..?

Back 21

Elliptic centric

Front 22

Height of a peak on a MR spectrum correlates to the ___ of a substance that was detected.

Back 22

Amount

Front 23

GRE echo for fast breath hold contrast enhanced ___ is utilized.

Back 23

Spoiling

additional RF pulses used to spoil away trans. mag.

Front 24

Which field strength would require shortest Ti time to suppress signal from fat when performing STIR sequence?

Back 24

0.5T

Front 25

Ti should be __ percent of the T1 relaxation time to null signal.

Back 25

69 percent

Front 26

Level 2 personnel has..?

Back 26

Extensive MR training / revisit this

Front 27

Another term for fever..?

Back 27

Febrile

Front 28

FA doubled, RF deposition increases by a factor of..?

Back 28

4

Front 29

Partial or fractional echo is..?

Back 29

Half the views of k-space are filled in the freq direction

Front 30

MRA removal of signal from vessel by..?

Back 30

Spatial presat. / for all MRA?

Front 31

FA decreases there is less or more T1 info.

Back 31

less

Front 32

rBW effects..?

Back 32

SNR and chemical shift only?

Front 33

B1 mag. field produced by..?

Back 33

RF coil

Front 34

Shimming should not be turned on and off rapidly.

Back 34

T

Front 35

Latrogenic is..?

Back 35

Adverse reaction caused by treatment

Front 36

Reducing FOV by a factor of 2 will reduce voxel volume by a factor of..?

Back 36

4

Front 37

Dynamic enhanced imaging for vascular structures contrast is administered and K-space is filled ___ to ensure contrast enhancement is well visualized

Back 37

Centric

Front 38

TOF MRA use T1 gre echo with TR and FA selections to suppress signal from stationary tissues, visualizing flowing blood by flow related enhancement

Back 38

T

Front 39

PC /mra use T2 gre echo with parameter selections that suppress tissues and rely on velocity - induced phase shifts for vascular signal

Back 39

T

Front 40

In MRA what parameter aids in signal loss?

Back 40

smaller voxel short TE/ written description