Assuming all other parameters are the same, a ____ms echo time provides the strongest
T2 contrast.
a. 15
b. 30
c. 90
d. 110
Give this one a try later!
d.
TE goes UP/ T2 contrast goes UP
,A given MR system claims its maximum gradient amplitude is 30mT/meter. Imagine an
ideal case in which the field strength at all points inside the magnet is 1.500 Tesla. If a
pulse sequence drives the z-gradient to its maximum amplitude, the field strength at
the center of the magnet is ____ Tesla.
a. 1.500 T
b. 1.510 T
c. 1.600 T
d. 1.490 T
Give this one a try later!
a.
at isocenter
Which of the following motion artifact control techniques is the most effective at
suppressing cardiac motion?
a. respiratory compensation
b. ECG triggering
c. fat saturation
d. flow compensation
Give this one a try later!
b.
electroCARDIOgram
,If a velocity encoding gradient of 90cm/sec is chosen for a phase contrast MRA study,
____ cm/sec flow will appear darker than 30 cm/sec flow.
a. 20
b. 40
c. 60
d. 80
Give this one a try later!
a.
(?)
slower flow than chosen gradient will appear darker
If seventeen 5mm slices are prescribed and a gap of 1mm is chosen, the total
anatomical coverage is ____cm.
a. 10.0
b. 10.1
c. 10.2
d. 10.3
Give this one a try later!
b.
(17 slices x 5mm slices) + (16 gaps x 1mm gaps)
85 slices + 16 gaps = 101 mm
101/10 = 10.1 cm
, Which of the following is a method of reducing chemical shift artifact in MR image?
a. use wider receiver bandwidth
b. apply a saturation region
c. use a wider transmitter bandwidth
d. apply a rawdata filter
Give this one a try later!
a.
chemical shift does DOWN/ receiver bandwidth goes UP
Which of the following is a result of PCA?
1. sensitivity to any desired rate of blood flow
2. sensitivity to motion
3. saturation of blood causes it to lose intensity as it moves through the volume
4. excellent stationary background suppression
Give this one a try later!
1, 2, and 4
A region of interest extends about 5cm below the surface of the skin. if you only have
four circular coils to choose from, a ____cm diameter coil will have the best sensitivity
to signal from the region of interest and at the same time provide the highest signal-
to-noise ratio.
a. 3
b. 10
T2 contrast.
a. 15
b. 30
c. 90
d. 110
Give this one a try later!
d.
TE goes UP/ T2 contrast goes UP
,A given MR system claims its maximum gradient amplitude is 30mT/meter. Imagine an
ideal case in which the field strength at all points inside the magnet is 1.500 Tesla. If a
pulse sequence drives the z-gradient to its maximum amplitude, the field strength at
the center of the magnet is ____ Tesla.
a. 1.500 T
b. 1.510 T
c. 1.600 T
d. 1.490 T
Give this one a try later!
a.
at isocenter
Which of the following motion artifact control techniques is the most effective at
suppressing cardiac motion?
a. respiratory compensation
b. ECG triggering
c. fat saturation
d. flow compensation
Give this one a try later!
b.
electroCARDIOgram
,If a velocity encoding gradient of 90cm/sec is chosen for a phase contrast MRA study,
____ cm/sec flow will appear darker than 30 cm/sec flow.
a. 20
b. 40
c. 60
d. 80
Give this one a try later!
a.
(?)
slower flow than chosen gradient will appear darker
If seventeen 5mm slices are prescribed and a gap of 1mm is chosen, the total
anatomical coverage is ____cm.
a. 10.0
b. 10.1
c. 10.2
d. 10.3
Give this one a try later!
b.
(17 slices x 5mm slices) + (16 gaps x 1mm gaps)
85 slices + 16 gaps = 101 mm
101/10 = 10.1 cm
, Which of the following is a method of reducing chemical shift artifact in MR image?
a. use wider receiver bandwidth
b. apply a saturation region
c. use a wider transmitter bandwidth
d. apply a rawdata filter
Give this one a try later!
a.
chemical shift does DOWN/ receiver bandwidth goes UP
Which of the following is a result of PCA?
1. sensitivity to any desired rate of blood flow
2. sensitivity to motion
3. saturation of blood causes it to lose intensity as it moves through the volume
4. excellent stationary background suppression
Give this one a try later!
1, 2, and 4
A region of interest extends about 5cm below the surface of the skin. if you only have
four circular coils to choose from, a ____cm diameter coil will have the best sensitivity
to signal from the region of interest and at the same time provide the highest signal-
to-noise ratio.
a. 3
b. 10
