[5] Plain and Contrast X-Ray Studies

Question 1

5 Basic Densities on XRay

1. Gas
2. Fat
3. Soft Tissue/Fluid
4. Bone/Calcification
5. Metal

Answer 1

1. Black
2. Dark Gray
3. Light Gray
4. White
5. Intense White

Question 2

Define: NPO

Answer 2

Nothing Per Orem
4-6 Hours before examination
Nothing, even water, for those with complications

Question 3

Why should patients be dehydrated for NPO?

Answer 3

Easier absorption of contrast media

Question 4

Most common contrast material

Answer 4

Barium Sulfate/Sulfide

Question 5

How much contrast is usually ingested?

Answer 5

1L to image the whole tract

Another 250cc introduced midway