Christopher Hess, MD, PhD, Neuroimaging Part 2: Fundamentals of Image Interpretation

The easiest way to seperate an MRI from a CT scan is to look at the outside of the head. CT has little tissue contrast, but the bone is bright. With an MRI, tissue contrast is more visible, including soft tissues. This allows for great flexibility in what it emphasizes.
There are three Standard Imaging Planes, or cardinal planes -- Axial, Coronal, and Sagittal.
Because the human eye can't see the entire range of density detected by a CT scan, 'windows' are needed to reveal these levels. CT has relatively few densities, so they are easier to read.
More on Dr. Hess: profiles.ucsf.edu/christopher....
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• Neuroimaging Lecture b...
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