In brain MRI reporting, which aspect should be described regarding diffusion restriction?

In brain MRI reporting, which aspect should be described regarding diffusion restriction?

• A. Not mention diffusion
• B. Presence or absence of diffusion restriction
• C. Only the T1 signal
• D. The patient's height

Answer: (B)

Diffusion restriction on diffusion-weighted imaging signals acute pathology, most commonly acute ischemia, so the report should clearly state whether diffusion restriction is present or absent. If restriction is seen, describing its location and extent (which brain regions are involved) helps guide urgent management, and mentioning the corresponding ADC map pattern (true restriction showing high signal on DWI with low ADC) reinforces the interpretation. If there is no diffusion restriction, that finding still informs the diagnostic context. Other details like T1 signal or unrelated data (for example, height) do not address diffusion status and aren’t the focus of this assessment.

Diffusion restriction on diffusion-weighted imaging signals acute pathology, most commonly acute ischemia, so the report should clearly state whether diffusion restriction is present or absent. If restriction is seen, describing its location and extent (which brain regions are involved) helps guide urgent management, and mentioning the corresponding ADC map pattern (true restriction showing high signal on DWI with low ADC) reinforces the interpretation. If there is no diffusion restriction, that finding still informs the diagnostic context. Other details like T1 signal or unrelated data (for example, height) do not address diffusion status and aren’t the focus of this assessment.