Cite this: Neuroimaging of Ischemic Stroke With CT and MRI ... She was quickly taken to the MRI scanner and the initial DWI were obtained less than 30 min after the witnessed stroke.

A multimodal MRI scan was completed at 3 h 39 min after symptom onset. The apparent diffusion coefficient and diffusion-weighted imaging (DWI) demonstrated ischemic changes confined predominantly ...

In a study comparing CT, DWI, and standard MRI, we found that abnormal DWI was a very sensitive and specific indicator of ischemic stroke in patients presenting within six hours of symptom onset.

While a DWI MR image ... impacted by the stroke (brighter areas indicated by red arrow), the FLAIR image below, taken at the same time, does not reveal obvious acute ischemic damage.