How Do You Increase MRI SNR?

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| By Larmor63

Larmor63

Community Contributor

Quizzes Created: 2 | Total Attempts: 2,962

Questions: 11 | Attempts: 2,094 | Updated: Jul 5, 2024

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Explore how to enhance Signal-to-Noise Ratio (SNR) in MRI through key parameter adjustments. This quiz covers the impact of changes in B0, T1, T2, TE, TR, and NEX on SNR, essential for professionals in medical imaging and radiology.

Questions and Answers

1.

B₀
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase
2.

T1
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
B. Decrease

Explanation
The answer is "Decrease" because the given options "Increase" and "Decrease" suggest a change in value. Since there is no context or specific variable mentioned in the question, it is unclear what is being referred to. However, based on the options provided, it can be inferred that the value is expected to decrease.

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3.

T2
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase
4.

TE
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
B. Decrease

Explanation
The given question is incomplete and not readable.

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5.

TR
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase

Explanation
Without any additional context or information provided, it is not possible to give a specific explanation for why the correct answer is "Increase." The question is incomplete and lacks the necessary details to provide a comprehensive explanation.

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6.

NEX
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase

Explanation
S/N is proportional to square root of NEX

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7.

Pixel size
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase

Explanation
Spatial resolution degrades

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1
8.

Matrix size
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
B. Decrease

Explanation
Spatial resolution degrades

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1
9.

Slice thickness
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase

Explanation
Spatial resolution degrades

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10.

Field of view
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
A. Increase

Explanation
Spatial resolution degrades; Resolution = FOV/matrix size

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11.

Radiofrequency bandwidth
- A.
  
  Increase
- B.
  
  Decrease
Correct Answer
B. Decrease

Explanation
S/N is inversely related to square root of bandwidth

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1

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Current Version
Jul 05, 2024

Quiz Edited by
ProProfs Editorial Team
Sep 01, 2010

Quiz Created by
Larmor63

How Do You Increase MRI Snr?

B0

T1

T2

TE

TR

NEX

Pixel size

Matrix size

Slice thickness

Field of view

Radiofrequency bandwidth

B₀