ARMRIT practice tests questions with
correct answers
The |2 |types |of |enhancement |media |described |by |Lauffer, |the |mechanism |of |T1 |agents |is |- |
CORRECT |ANSWER✔✔-to |decrease |T1 |relaxation |time, |thus |emitting |high |signal
An |analogy |for |the |decoding |of |the |MR |signal |through |Fourier |Transform |- |CORRECT |
ANSWER✔✔-Basilar |membrane |processing |sound
Logically |each |line |of |phase |encoding |data |is |combined |to |allow |the |FT |to |determine |the |
position |along |the |y-axis. |The |number |of |phase |encoding |steps |determines |- |CORRECT |
ANSWER✔✔-the |number |of |pixels |along |the |y-axis
In |a |gradient |echo |pulse |sequence, |which |flip |angle |will |produce |a |T2 |weighted |gradient |echo |
image. |- |CORRECT |ANSWER✔✔->20 |- |<45 |degree |flip |angle
In |a |horizontal |magnet, |what |is |the |primary |Gs |(slice |select |gradient) |for |an |axial |slice |- |
CORRECT |ANSWER✔✔-Gz |(axial |slice)
A |linear |relationship |between |frequency |and |position |is |superimposed |on |Bo |by |the |Gp |(phase
|encoding |gradient). |The |Hydrogen |protons |relative |precessional |frequencies |determine |- |
CORRECT |ANSWER✔✔-phase |shifts
Combining |a |metal |ion |with |a |ligand |reduces |their |tendency |to |bind |to |proteins, |enzymes, |or |
membranes. |The |degree |to |which |they |dissociate |is |a |measure |of |their |- |CORRECT |
ANSWER✔✔-toxicity
,In |a |phase |sequence |employing |2DFT, |the |time |can |be |calculated |using |which |formula |- |
CORRECT |ANSWER✔✔-TR |x |NEX |x |Matrix
What |pulse |imaging |technique |is |in |all |implementations |of |MRA |- |CORRECT |ANSWER✔✔-
gradient |echo
What |year |was |the |first |MRI |enhancement |agent |approved |for |clinical |use |- |CORRECT |
ANSWER✔✔-1988
Increasing |NEX |- |CORRECT |ANSWER✔✔-Increase |SNR |and |Resolution
Inversion |time, |in |an |IR |pulse |sequence, |is |the |time |interval |between |the |- |CORRECT |
ANSWER✔✔-180 |degree |and |90 |degree |pulses
Increasing |the |matrix |- |CORRECT |ANSWER✔✔-increase |resolution
A |pulse |sequence |that |replaces |the |second |RF |pulse |with |a |gradient |magnetic |field |to |rephase |
the |transverse |vector |and |produce |and |echo |is |called |- |CORRECT |ANSWER✔✔-gradient |echo
Increase |FOV, |TE, |Slice |thickness |does |- |CORRECT |ANSWER✔✔-not |affect |scan |time
In |spatial |localization |which |factor |most |affects |slice |thickness |and |position |- |CORRECT |
ANSWER✔✔-bandwidth |and |strength |of |Gs |(slice |select |gradient)
The |two |types |of |enhancement |media |described |by |Lauffer, |the |mechanism |of |T2 |agents |is |- |
CORRECT |ANSWER✔✔-to |decrease |T2 |relaxation |time, |thus |emiting |a |high |signal
A |generation |of |phase |differences |along |a |particular |direction |of |a |slice |- |CORRECT |
ANSWER✔✔-phase |encoding
, Who |described |the |mathematical |method |of |converting |a |time-varying |signal |into |its |
frequency |components |which |are |used |to |obtain |positional |information |from |the |MR |signal |- |
CORRECT |ANSWER✔✔-Jean |Baptiste |- |Joseph |Fourier
A |generation |of |frequency |differences |along |a |particular |direction |of |a |slice |is |called |- |
CORRECT |ANSWER✔✔-frequency |encoding
In |a |horizontal |field |magnet |what |is |the |primary |Gs |(slice |select |gradient) |for |a |sagittal |slice |- |
CORRECT |ANSWER✔✔-Gx |(sagittal |slice)
Pixel |size |formula |- |CORRECT |ANSWER✔✔-FOV/Matrix
In |an |IR |pulse |sequence |what |will |produce |a |STIR |fat |suppressed |pulse |sequence |- |CORRECT |
ANSWER✔✔-IR |of |80 |- |120ms
Decrease |slice |thickness |- |CORRECT |ANSWER✔✔-decreases |SNR
When |selecting |a |volume |of |slices, |which |method |for |providing |spatial |encoding |is |employed |-
|CORRECT |ANSWER✔✔-3DFT
The |purpose |of |the |first |use |of |metal |ions |in |MRI |enhancement |like |Gadolinium |is |to |- |
CORRECT |ANSWER✔✔-Decrease |relaxation |time |for |Hydrogen |in |the |tissue
Which |type |of |MRI |magnet |is |made |up |of |naturally |ferromagnetic |material |- |CORRECT |
ANSWER✔✔-superconductive |magnet
Which |type |of |receiver |RF |coil |is |placed |close |to |the |patients |body |for |the |purpose |of |
superficial |anatomic |structures |- |CORRECT |ANSWER✔✔-surface |coils
correct answers
The |2 |types |of |enhancement |media |described |by |Lauffer, |the |mechanism |of |T1 |agents |is |- |
CORRECT |ANSWER✔✔-to |decrease |T1 |relaxation |time, |thus |emitting |high |signal
An |analogy |for |the |decoding |of |the |MR |signal |through |Fourier |Transform |- |CORRECT |
ANSWER✔✔-Basilar |membrane |processing |sound
Logically |each |line |of |phase |encoding |data |is |combined |to |allow |the |FT |to |determine |the |
position |along |the |y-axis. |The |number |of |phase |encoding |steps |determines |- |CORRECT |
ANSWER✔✔-the |number |of |pixels |along |the |y-axis
In |a |gradient |echo |pulse |sequence, |which |flip |angle |will |produce |a |T2 |weighted |gradient |echo |
image. |- |CORRECT |ANSWER✔✔->20 |- |<45 |degree |flip |angle
In |a |horizontal |magnet, |what |is |the |primary |Gs |(slice |select |gradient) |for |an |axial |slice |- |
CORRECT |ANSWER✔✔-Gz |(axial |slice)
A |linear |relationship |between |frequency |and |position |is |superimposed |on |Bo |by |the |Gp |(phase
|encoding |gradient). |The |Hydrogen |protons |relative |precessional |frequencies |determine |- |
CORRECT |ANSWER✔✔-phase |shifts
Combining |a |metal |ion |with |a |ligand |reduces |their |tendency |to |bind |to |proteins, |enzymes, |or |
membranes. |The |degree |to |which |they |dissociate |is |a |measure |of |their |- |CORRECT |
ANSWER✔✔-toxicity
,In |a |phase |sequence |employing |2DFT, |the |time |can |be |calculated |using |which |formula |- |
CORRECT |ANSWER✔✔-TR |x |NEX |x |Matrix
What |pulse |imaging |technique |is |in |all |implementations |of |MRA |- |CORRECT |ANSWER✔✔-
gradient |echo
What |year |was |the |first |MRI |enhancement |agent |approved |for |clinical |use |- |CORRECT |
ANSWER✔✔-1988
Increasing |NEX |- |CORRECT |ANSWER✔✔-Increase |SNR |and |Resolution
Inversion |time, |in |an |IR |pulse |sequence, |is |the |time |interval |between |the |- |CORRECT |
ANSWER✔✔-180 |degree |and |90 |degree |pulses
Increasing |the |matrix |- |CORRECT |ANSWER✔✔-increase |resolution
A |pulse |sequence |that |replaces |the |second |RF |pulse |with |a |gradient |magnetic |field |to |rephase |
the |transverse |vector |and |produce |and |echo |is |called |- |CORRECT |ANSWER✔✔-gradient |echo
Increase |FOV, |TE, |Slice |thickness |does |- |CORRECT |ANSWER✔✔-not |affect |scan |time
In |spatial |localization |which |factor |most |affects |slice |thickness |and |position |- |CORRECT |
ANSWER✔✔-bandwidth |and |strength |of |Gs |(slice |select |gradient)
The |two |types |of |enhancement |media |described |by |Lauffer, |the |mechanism |of |T2 |agents |is |- |
CORRECT |ANSWER✔✔-to |decrease |T2 |relaxation |time, |thus |emiting |a |high |signal
A |generation |of |phase |differences |along |a |particular |direction |of |a |slice |- |CORRECT |
ANSWER✔✔-phase |encoding
, Who |described |the |mathematical |method |of |converting |a |time-varying |signal |into |its |
frequency |components |which |are |used |to |obtain |positional |information |from |the |MR |signal |- |
CORRECT |ANSWER✔✔-Jean |Baptiste |- |Joseph |Fourier
A |generation |of |frequency |differences |along |a |particular |direction |of |a |slice |is |called |- |
CORRECT |ANSWER✔✔-frequency |encoding
In |a |horizontal |field |magnet |what |is |the |primary |Gs |(slice |select |gradient) |for |a |sagittal |slice |- |
CORRECT |ANSWER✔✔-Gx |(sagittal |slice)
Pixel |size |formula |- |CORRECT |ANSWER✔✔-FOV/Matrix
In |an |IR |pulse |sequence |what |will |produce |a |STIR |fat |suppressed |pulse |sequence |- |CORRECT |
ANSWER✔✔-IR |of |80 |- |120ms
Decrease |slice |thickness |- |CORRECT |ANSWER✔✔-decreases |SNR
When |selecting |a |volume |of |slices, |which |method |for |providing |spatial |encoding |is |employed |-
|CORRECT |ANSWER✔✔-3DFT
The |purpose |of |the |first |use |of |metal |ions |in |MRI |enhancement |like |Gadolinium |is |to |- |
CORRECT |ANSWER✔✔-Decrease |relaxation |time |for |Hydrogen |in |the |tissue
Which |type |of |MRI |magnet |is |made |up |of |naturally |ferromagnetic |material |- |CORRECT |
ANSWER✔✔-superconductive |magnet
Which |type |of |receiver |RF |coil |is |placed |close |to |the |patients |body |for |the |purpose |of |
superficial |anatomic |structures |- |CORRECT |ANSWER✔✔-surface |coils
