TEST BANK For Radiographic Imaging and Exposure 5th Edition// With Rationales Questions & Answers /Rated A+
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Course
Radiographic Imaging and Exposure 5t
Institution
Radiographic Imaging And Exposure 5t
TEST BANK For Radiographic Imaging and Exposure 5th
Edition// With Rationales Questions & Answers /Rated A+.
Differentail Absorption and Image formation relationship - CORRECT ANSWERS-Image
created when xray beams passes through a patient and then interacts with an image
receptor.
Variations o...
TEST BANK For Radiographic Imaging and Exposure 5th
Edition// With Rationales Questions & Answers /Rated A+.
Differentail Absorption and Image formation relationship - CORRECT ANSWERS-Image
created when xray beams passes through a patient and then interacts with an image
receptor.
Variations of absorption and transmission of the exiting x-ray beam structurally
represent the anatomic area of interest
Beam Attenuation - CORRECT ANSWERS-The reduction of intensity when x-rays pass
through the anatomic tissue.
Two process occur
1. Absorption
2. Scattering
Absorption - CORRECT ANSWERS-Complete absorption occurs when the x-ray has
enough energy to remove an inner shell electron, the ejected electron is called a
photoelectron
Photoelectron - CORRECT ANSWERS-The ejected electron from the inner-shell
quickly loses energy as it interacts with nearby tissues
Ionization - CORRECT ANSWERS-The ability for x-rays to remove an inner shell
electron(s)
In diagnostic range this x-ray interaction is called the photoelectric effect
Photoelectric effect - CORRECT ANSWERS-Ionized atom has a vacancy so an electron
from teh outer shell drops down to fill the hole.
The difference in binding energies a secondary xray photon is emitted.
Has a very low energy and is unlikely to exit the patient
Xray phonton absorption - CORRECT ANSWERS-During attenuation, the photoelectric
effect is responsible for the total absorption of the incoming x-ray photon
According to the line focus principle, as the target angle decreases, the..... - CORRECT
ANSWERS-Effective focal spot size decreases
Calculating mAs - CORRECT ANSWERS-mAs = mA x seconds
, Differential Absorption - CORRECT ANSWERS-A process whereby some amount of the
x-ray beam is absorbed in the tissue and some passes through (transmits) the anatomic
part.
Compton effect - CORRECT ANSWERS-The loss of energy of the incoming photon
occurs when it ejects an outer shell electron form a tissue atom.
Scattering - CORRECT ANSWERS-The incoming x-ray photon may lose energy and
change direction as a result of the compton effect
Factors of Attenuation: Tissue Atomic Number - CORRECT ANSWERS-Increase A#
BA - up
Abs - up
Trans - down
Decrease A#
BA - down
Abs - down
Trans - up
Factors of Attenuation: Tissue Density - CORRECT ANSWERS-Increase TD
BA - up
Abs - up
Trans - down
Decrease TD
BA - down
Abs - down
Trans - up
Factors of Attenuation: X-ray Beam Quality - CORRECT ANSWERS-Increase Quality
BA -down
Abs - down
Trans - up
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