Test 1 Medimage 201 Practice

X-radiation is classified in which spectrum? Select one alternative:

• Radiation

• Energy

• Atomic

• Electromagnetic

X-rays have a dual nature, which means that they behave like both:

• Atoms and molecules

• Photons and quanta

• Waves and particles

• Charged and uncharged particles

According to the line-focus principle, as the target angle decreases, the __________

• Actual focal spot size decreases

• Actual focal spot size increases

• Effective focal spot size decreases

• Effective focal spot size increases

Which type of target interaction is responsible for most of the x-rays in the diagnostic beam?

• Characteristic interaction

• Thermionic emission

• Bremsstrahlung interaction

• None of the above

What value of mAs is produced when the radiographer sets a kilovoltage peak of 70 kVp, a milliamperage of 600 mA, and an exposure time of 50 ms?

• 3.5 mAs

• 30 mAs

• 300 mAs

• 350 mAs

An anatomic part that transmits the incoming x-ray photon would create an area of on the radiographic image:

• Fog

• High brightness

• Low brightness

• Noise

Which of the following factors would affect beam attenuation?

(1) Tissue atomic number (2) Beam quality (3) Fog

• 1 and 2 only

• 1 and 3 only

• 2 and 3 only

• 1, 2 and 3