unit 1 pri

Muscle tissue absorbs more radiation than fat tissue because muscle tissue has a:

• higher atomic number.

• lower atomic number

• higher tissue density

• lower tissue density

Radiographic images of structures are always magnified when compared to the actual structure.

• true

• false

When an image is distorted, spatial resolution is increased.

• true

• false

With a standard x-ray tube, ______________% of the x-ray beam produced with 65 kVp is the result of characteristic interactions.

• 0

• 15

• 85

• 100

When making an exposure, which of the following does not occur when just the rotor, or prep button, is activated?

• The anode begins to rotate.

• Voltage is applied across the tube

• Current is applied to the filament

• A space charge is created

The quality of the x-ray beam indicates:

• the number of photons

• the ability of the photons to penetrate.

• the quantity of radiation

• whether or not the photons were made well

Decreasing the exposure time results in:

• fewer x-ray photons

• more x-ray photons

• higher photon energy.

• lower photon energy.

____ results in the process of image formation, whereby the x-ray beam interacts with the anatomic tissue, and a portion of the beam passes through the part and strikes the image receptor.

• Transference

• Differential absorption

• Molecular modeling

• Compensating filtration

____ is the loss of some of the energy from the x-ray beam as it passes through the tissue being imaged.

• Compensating filtration

• Attenuation

• Photon transmission

• Photoelectric scattering

When the x-ray photon travels completely through the part, that activity is called:

• a. acceleration

• b. attenuation

• c. transmission

• d. absorption