Question

1. “x - rays” produce pictures of what type of body tissue and bones?

o transparent
o epithelia
o soft
o dense

1. which of the following is a noninvasive roentgenography diagnostic technique?

o angiogram
o pet scan
o cat scan
o gamma knife surgery

Explanation:

X - rays are good at imaging dense tissues like bones because they are absorbed differently by different densities of materials in the body. Dense materials absorb more X - rays. For the second question, a CAT scan (Computed Axial Tomography) is a non - invasive roentgenography diagnostic technique. An angiogram usually involves injection of a contrast agent (invasive), a PET scan uses radioactive tracers but is not roentgenography, and Gamma Knife Surgery is a treatment, not a diagnostic technique.

Answer:

1. D. dense
2. C. CAT scan