The slice thickness in MRI can significantly affect which of the following?

Prepare for the ARRT MRI Registry Exam with focused quizzes and detailed explanations. Master complex concepts with targeted practice questions and advance your career in diagnostic imaging.

The slice thickness in MRI is a crucial factor that directly influences image resolution. When the slice thickness is reduced, the MRI can provide finer detail within the image, resulting in higher spatial resolution. Thinner slices allow for more precise localization of anatomy and pathology, which is vital for accurate diagnosis and assessment.

This relationship is because thinner slices provide less volume-averaging of tissues, allowing for clearer differentiation between adjacent structures. In contrast, if the slice thickness is increased, the image can appear blurrier because more tissue types are averaged together, potentially obscuring important details.

The other options are less directly influenced by slice thickness. While gradient strength and signal duration can play roles in the quality of the MRI image, they are not as directly related to slice thickness as image resolution is. Temporal resolution primarily pertains to how quickly images are acquired and may relate more to the repetition time (TR) and echo time (TE) settings rather than slice thickness alone.

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