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.
It will also help your radiologist see the dye as it moves through your joint. The contrast used for your arthrogram is a mix of X-ray dye, lidocaine, and MRI contrast. This mixture helps the radiologist see the contrast during both the arthrogram and the MRI.