MRI Parameters and Tradeoffs - ARRT Registry Questions and Answers Latest Version Already Passed

MRI Parameters and Tradeoffs - ARRT
Registry Questions and Answers Latest
Version Already Passed
What happens when the repetition time (TR) is increased?

A. T1 contrast is enhanced

B. Scan time decreases


✔✔C. Signal-to-noise ratio (SNR) improves


D. Slice thickness decreases




Which adjustment will improve spatial resolution in MRI?

A. Increasing field of view (FOV)


✔✔B. Increasing matrix size


C. Reducing number of excitations (NEX)

D. Increasing slice thickness




What is the effect of increasing the number of signal averages (NEX)?

A. Increases scan speed

B. Decreases SNR


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, ✔✔C. Reduces image noise


D. Reduces slice thickness




Which parameter directly affects the scan time in MRI?


✔✔A. Repetition time (TR)


B. Echo time (TE)

C. Field of view (FOV)

D. Flip angle




How does decreasing the bandwidth affect image quality?

A. Decreases chemical shift artifact

B. Increases scan time


✔✔C. Improves signal-to-noise ratio (SNR)


D. Reduces motion artifacts




Which of the following changes will reduce motion artifacts in MRI?


✔✔A. Using a shorter TR


B. Increasing TE

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