Measure: To estimate the cranial capacity of each skull in the Gizmo, measure the area of the part of the cranium that houses the brain. This part of the cranium is roughly behind the red line in the diagram at right.
Chemical dyes are sometimes injected into patients prior to an MRI (magnetic resonance imaging) to enhance internal images. However, certain widely used MRI dyes may cause a number of side effects, including a serious, potentially fatal disease known as nephrogenic systemic fibrosis, or NSF.
Magnetic resonance imaging (MRI) is a type of noninvasive imaging test that uses magnets and radio waves to create pictures of the inside of your body. Unlike a CT scan, an MRI uses no radiation and is considered a safer alternative, especially for pregnant women. In a chest MRI, magnets and radio waves create black and white images of your chest.