Parameter Trade-offs (MRI QUIZ)

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Description and Tags

Vocabulary review flashcards covering MRI parameter trade-offs and their effects on SNR, scan time, and spatial resolution.

41 Terms

1
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Increasing TR (Effect on SNR)

Increases SNR.

2
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Increasing TR (Effect on Scan Time)

Increases scan time.

3
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Increasing TR (Effect on Spatial Resolution)

Does nothing to spatial resolution.

4
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Increasing TE (Effect on SNR)

Decreases SNR.

5
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Increasing FOV (Effect on SNR)

Increases SNR.

6
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Increasing NSA/NEX (Effect on SNR)

Increases SNR.

7
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Increasing ETL (Effect on SNR)

Decreases SNR.

8
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Increasing TI (Inversion Time) (Effect on SNR)

Decreases SNR.

9
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Increasing Phase Matrix (Effect on SNR)

Decreases SNR.

10
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Increasing Flip Angle (Effect on SNR)

Increases SNR.

11
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Increasing rBw (Effect on SNR)

Decreases SNR.

12
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Increasing P Reduction Factor (Effect on SNR)

Decreases SNR.

13
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Increasing DWI b-value (Effect on SNR)

Decreases SNR.

14
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Increasing # SAT Bands (Effect on SNR)

Decreases SNR.

15
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Increasing Slice Thickness (Effect on SNR)

Increases SNR.

16
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Increasing # of Slices (Effect on SNR)

Does nothing to SNR.

17
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Increasing TE (Effect on Scan Time)

Increases scan time.

18
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Increasing FOV (Effect on Scan Time)

Does nothing to scan time.

19
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Increasing NSA/NEX (Effect on Scan Time)

Increases scan time.

20
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Increasing ETL (Effect on Scan Time)

Decreases scan time.

21
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Increasing TI (Inversion Time) (Effect on Scan Time)

Increases scan time due to increased TR requirements.

22
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Increasing Phase Matrix (Effect on Scan Time)

Increases scan time.

23
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Increasing Flip Angle (Effect on Scan Time)

Does nothing to scan time.

24
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Increasing rBw (Effect on Scan Time)

Decreases scan time.

25
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Increasing P Reduction Factor (Effect on Scan Time)

Decreases scan time.

26
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Increasing DWI b-value (Effect on Scan Time)

Increases scan time due to increased TR required.

27
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Increasing # of SAT Bands (Effect on Scan Time)

Increases scan time.

28
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Increasing Slice Thickness (Effect on Scan Time)

Does nothing to scan time.

29
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Increasing # of Slices (Effect on Scan Time)

Increases scan time due to increased TR required.

30
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Increasing TE (Effect on Spatial Resolution)

Does nothing to spatial resolution.

31
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Increasing FOV (Effect on Spatial Resolution)

Decreases spatial resolution.

32
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Increasing NSA/NEX (Effect on Spatial Resolution)

Does nothing to spatial resolution.

33
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Increasing ETL (Effect on Spatial Resolution)

Does nothing to spatial resolution.

34
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Increasing TI (Effect on Spatial Resolution)

Does nothing to spatial resolution.

35
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Increasing Phase Matrix (Effect on Spatial Resolution)

Increases spatial resolution.

36
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Increasing Flip Angle (Effect on Spatial Resolution)

Does nothing to spatial resolution.

37
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Increasing rBw (Effect on Spatial Resolution)

Does nothing to spatial resolution.

38
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Increasing P Reduction Factor (Effect on Spatial Resolution)

Does nothing to spatial resolution.

39
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Increasing DWI b-value (Effect on Spatial Resolution)

Does nothing to spatial resolution.

40
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Increasing Slice Thickness (Effect on Spatial Resolution)

Decreases spatial resolution.

41
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Increasing # of Slices (Effect on Spatial Resolution)

Does nothing to spatial resolution.