Negative contrast agents
A)appear white on images.
B)have low atomic numbers.
C)provide high x-ray beam attenuation and absorption.
D)are materials such as bone and metal.

Question

Quizplus · Accepted Answer

X-ray photons are easily transmitted or scattered through radiolucent contrast media.As the name implies,these media are relatively lucent to x-rays.Because the anatomic areas filled by these agents appear dark (increased density)on radiographs,they are also called negative contrast agents.These media are composed of elements with low atomic numbers.

Negative Contrast Agents