Enhanced or Unenhanced: That is the question… DMI 57

Why enhance? Increase attenuation coefficient Differentiate tissue densities Observe infusion of vascularity, tumors, or other structures Timing becomes important Commonly used contrast agents –IV – Iodinated –Oral – Barium or Iodinated, sometimes H 2 O –Intrathecal – Iodinated –Air – Negative contrast

Differing Tissue Densities in the Neck DMI 57

The Grocery List List the structures you would expect to see in the neck Now, divide them into categories: –Air filled structures –Tissue structures –Vascular structures

On this next slide, let’s look at the difference between arteries and veins

Vein Artery

Now, let’s look at some air-filled structures

Let’s look at some soft tissue structures