Water on T2-weighted images is which signal intensity?

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Study for the Image Modalities Test to enhance your knowledge of various imaging techniques. Prepare with flashcards and multiple choice questions, each accompanied by hints and explanations. Get ready to ace your exam!

Multiple Choice

Water on T2-weighted images is which signal intensity?

Explanation:
On T2-weighted MRI, contrast emphasizes differences in T2 decay. Water has a very long T2, so its transverse magnetization persists longer and it emits a strong signal on T2 sequences. That makes water appear bright, or hyperintense, compared with surrounding tissues. So the best description among the options is bright. (For contrast, water tends to be dark on T1-weighted images, which helps remember why it’s bright on T2.)

On T2-weighted MRI, contrast emphasizes differences in T2 decay. Water has a very long T2, so its transverse magnetization persists longer and it emits a strong signal on T2 sequences. That makes water appear bright, or hyperintense, compared with surrounding tissues. So the best description among the options is bright. (For contrast, water tends to be dark on T1-weighted images, which helps remember why it’s bright on T2.)

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