Magnetic Resonance Imaging (MRI) Practice Test

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Study for the Magnetic Resonance Imaging (MRI) Test. Utilize flashcards and multiple choice questions with detailed hints and explanations. Get thoroughly prepared for your MRI exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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In MRI, what effect does increasing the TE have on image quality?

Improves resolution
Decreases SNR
Does not affect quality
Increases T1 contrast

The correct answer is: Decreases SNR

Increasing the echo time (TE) in MRI primarily affects the signal-to-noise ratio (SNR). As TE increases, the time allowed for the transverse magnetization to decay also increases, leading to a weaker signal detected by the MRI system by the time the echo is captured. This reduction in signal strength results in decreased SNR, which can compromise image quality. While the other options discuss aspects of image quality or contrast, they do not directly relate to the effect of TE in the same way. For instance, increasing the TE does not enhance resolution or directly influence T1 contrast. Additionally, although the impact of TE on quality might not be immediately evident in all cases, it does indeed have a significant and measurable effect on the SNR, making it the most relevant consequence of increasing TE.