Exam (elaborations)
ARMRIT PRACTICE #3 QUESTIONS WITH SOLUTIONS
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Exam of 3 pages for the course ARMRIT at ARMRIT (ARMRIT PRACTICE #3)
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ARMRIT PRACTICE #3An inversion pulse sequence can be which of the following? - answerT1 weighted ,
water suppressed , Fat suppressed, all the above
Combining a metal ion with a liquid reduces their tendency to bind proteins, enzymes or
membranes. The degree to which they disassociate is a measure of? - answerToxicity
In a horizontal magnet field, what is the primary G's for an axial slice - answerGz
For the following spin-echo protocol: FOV: 320/TR: 500/TE: 25/slice thickness: 5mm
slice gap: 1mm/slice#9: NEX:4/Matrix192, Increasing the FOV will: - answerIncrease snr
Which of the following statements is true for gadolinium MRI i.v. enhancement
products? - answerProduces randomly fluctuating magnetic fields in its immediate
enviroment
For the following spin-echo protocol: FOV: 320/TR: 500/TE: 25/slice thickness: 5mm
slice gap: 1mm/slice#9: NEX:4/Matrix192, Decreasing the NEX will: - answerDecrease
the SNR and Resolution
For the following spin-echo protocol: FOV: 320/TR: 500/TE: 25/slice thickness: 5mm
slice gap: 1mm/slice#9: NEX:4/Matrix192, Decreasing the TE will: - answerIncrease The
# of allowable slices
using the following protocol, determine the scan time for this [pulse sequence: (round off
your answer to the nearest minute: FOV: 320 TR: ,2000ms ,TE 20/80ms , NEX:1
Matrix256x128 - answer4minutes
When selecting a volume of slices , which method for providing spatial encoding is
employed? - answer3DFT
A pulse sequence that replaces the second RF pulse with a gradient magnetic field to
rephase the transverse vector and produce an echo is called? - answergradient echo
In a horizontal field what is a primary G's for a coronal slice? - answerGy
Which of the following parameters settings best describes a proton density image? -
answerLong TR / Short TE
Which parameter in a pulse sequence helps to prevent "crosstalk" between two
adjacent slices? - answerSlice interval
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