Radiography Exam Radiology Tech 3

Question 1

What is the annual occupational whole-body effective dose limit for radiation workers in the US?

Accepted Answer

50 mSv

Answer

The NRC and NCRP set the annual occupational effective dose limit at 50 mSv (5 rem) for radiation workers.

Question 2

Which property of X-rays allows them to penetrate matter?

Accepted Answer

They are high-energy photons with no mass or charge

Answer

X-rays are electromagnetic radiation with no mass or charge, enabling them to penetrate matter with their interaction determined by photon energy and tissue density.

Question 3

What does the term 'attenuation' mean in radiography?

Accepted Answer

The reduction of X-ray beam intensity as it passes through matter

Answer

Attenuation refers to the reduction in X-ray beam intensity caused by absorption and scatter as it passes through matter.

Question 4

Which radiographic positioning term describes the patient lying face down?

Accepted Answer

Prone

Answer

Prone describes the patient positioned face down on the table, opposite to the supine (face up) position.

Question 5

What is the effect of increasing kVp on radiographic contrast?

Accepted Answer

Decreases contrast (more gray scale)

Answer

Higher kVp produces a more penetrating beam with greater Compton scatter, resulting in a longer gray scale and lower (reduced) contrast.

Radiography Exam Practice Test

Radiography Exam Practice Test

Radiography Exam Radiology Tech 3