Title: Differentiate between positive and negative contrast agents.
Course: Radiologic Technology II (14105-II) > Section: Exploring Radiologic Physics

Differentiation should include how the chemical properties of radiologic contrast agents (positive and negative) are used to enhance images.

Process/Skill Questions:

- How does density affect radiation visibility and penetration?
- What is the atomic weight of barium? Iodine?
- What anatomical parts are not visible without a contrast agent?
- What is meant by contrast?
- How does air serve as a contrast agent?
- What are the chemical properties of barium?
- What are the chemical properties of iodine?
- When would air be used vs. barium?