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Questions and Answers
What is CNR?
What is CNR?
What is the most critical factor affecting image quality?
What is the most critical factor affecting image quality?
How can CNR be increased?
How can CNR be increased?
What is a hyperintense area on an MR image?
What is a hyperintense area on an MR image?
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What is the proton density of a tissue?
What is the proton density of a tissue?
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What factors affect TI and T2 relaxation?
What factors affect TI and T2 relaxation?
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Which artifact produces replications of moving anatomy across the image in the phase encoding direction?
Which artifact produces replications of moving anatomy across the image in the phase encoding direction?
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What can cause motion artifacts in MRI images?
What can cause motion artifacts in MRI images?
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Which technique can be used as a remedy for motion artifacts in MRI?
Which technique can be used as a remedy for motion artifacts in MRI?
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Which artifact is caused by anatomy outside the FOV being folded onto the top of anatomy inside the FOV?
Which artifact is caused by anatomy outside the FOV being folded onto the top of anatomy inside the FOV?
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What causes anatomy outside the FOV to produce a signal within the receiving volume of the receiver coil?
What causes anatomy outside the FOV to produce a signal within the receiving volume of the receiver coil?
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What happens to the frequencies of the signal from anatomy outside the FOV?
What happens to the frequencies of the signal from anatomy outside the FOV?
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What is the artifact called when frequencies outside the FOV are aliased along the frequency encoding axis?
What is the artifact called when frequencies outside the FOV are aliased along the frequency encoding axis?
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Which direction of the FOV is smaller than the anterior-to-posterior dimensions of the head in Figure 8.10?
Which direction of the FOV is smaller than the anterior-to-posterior dimensions of the head in Figure 8.10?
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Which artifact is caused by anatomy outside the FOV being folded onto the top of anatomy inside the FOV?
Which artifact is caused by anatomy outside the FOV being folded onto the top of anatomy inside the FOV?
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What is the artifact called when frequencies outside the FOV are aliased along the frequency encoding axis?
What is the artifact called when frequencies outside the FOV are aliased along the frequency encoding axis?
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What is the artifact called when anatomy outside the FOV is folded onto the top of anatomy inside the FOV?
What is the artifact called when anatomy outside the FOV is folded onto the top of anatomy inside the FOV?
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What causes anatomy outside the FOV to produce a signal within the receiving volume of the receiver coil?
What causes anatomy outside the FOV to produce a signal within the receiving volume of the receiver coil?
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What happens to the frequencies of the signal from anatomy outside the FOV?
What happens to the frequencies of the signal from anatomy outside the FOV?
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Description
Test your understanding of image quality with this quiz focused on Contrast-to-Noise Ratio (CNR). Learn about the factors that impact CNR and how it affects image contrast. Sharpen your knowledge with this informative quiz.
