Stroke and Brain Parenchyma. Nima Aghaebrahim August 28, 2008. Stroke. Third leading cause of death and leading cause of disability in the U.S. Incidence: 700,000 per year and increasing about one stroke every minute Every 3.3 minutes, someone dies of a stroke Goal of imaging:
August 28, 2008
weighted MR image
shows an area of mildly increased signal intensity in the right parietal lobe (arrows). The ADC values
in this region were decreased.
(b) Perfusion-weighted MR
image shows a larger area with increased time to peak enhancement (arrows) in the right cerebral hemisphere.
between the perfusion
and diffusion images is indicative
of a large penumbra.