Test Bank Introduction To Radiologic
Technology 8th Edition By Callaway
What are the two components of the x-ray tube? - ANSWER ✔️
Anode & Cathode
What is needed to create x-rays? - ANSWER ✔️ 1. Source of
electrons
2. Means to accelerate the electrons
3. Means to bring electrons to a sudden stop
Cathode has a filament which contains... - ANSWER ✔️ A
thermionic cloud of electrons
When the filament is heated and electrons are emitted - ANSWER
✔️ Thermionic Emission
Law of Energy Conversion - ANSWER ✔️ Energy cannot be
created or destroyed, ONLY converted from one type of energy to
another
By product of x-ray tube energy conversion - ANSWER ✔️ >99%
heat
<1% x-radiation
2 primary advantages of digital imaging - ANSWER ✔️ 1. Post-
processing image enhancement
2. Images are stored on computer
,What's a further advantage of the post-processing image
enhancement of digital imaging - ANSWER ✔️ May alter density
of contrast of image after patient has had exam
What's a further advantage of digital images being able to be
stored on a computer? - ANSWER ✔️ Having the ability to
transfer to multiple locations via network, email, or CD/Rom
An imaging plate is coated with - ANSWER ✔️ Photostimuable
phosphor
Once the photostimuable phosphor of an imaging plate is struck
with x-rays it becomes - ANSWER ✔️ Excited and remains so
until processed
Once the IP is placed in reader (processor) it is scanned with a
laser and... - ANSWER ✔️ 1. Releases the energized phosphor
2. Phosphor are converted to visible image by computer
3. Viewed on Hi-res monitor
When struck by x-ray Phosphor crystals do what - ANSWER ✔️
Glow
1 x-ray photon= - ANSWER ✔️ 1000's light photons
Photon - ANSWER ✔️ Value of electromagnetic radiation
,Purpose of an intensifying screen - ANSWER ✔️ Reduce patient
exposure
Intensifying screen is coated with what emulsion on both sides -
ANSWER ✔️ Gelatin, silver compounds, protective coating
Processed film = - ANSWER ✔️ Permanent record and legal
document
Spot film - ANSWER ✔️ Still photo from fluoro
Computed tomography - ANSWER ✔️ Provides cross sectional
views of the body
Gantry - ANSWER ✔️ X-ray tube and detectors on circular path
in CT
MRI - ANSWER ✔️ Exposed to a magnetic field and radio wave
transmission
PET - ANSWER ✔️ Positron Emission Tomography
What is injected into circulatory system for PET scan? - ANSWER
✔️ Radiopharmaceuticals
Radiopharmaceuticals - ANSWER ✔️ Mimic the body's own
components
, PET scan is used to... - ANSWER ✔️ Check function of body
organ or system
In Nuclear medicine what are introduced? - ANSWER ✔️
Radioisotopes are introduced
Radioisotopes in Nuclear Medicine attracted to - ANSWER ✔️
Areas currently in disease process
The radioisotopes of Nuclear Medicine Emit radiation that is -
ANSWER ✔️ Detected
Where is the C-arm used most? - ANSWER ✔️ OR
When is shielding extremely important? - ANSWER ✔️ When
using the C-arm
Sonography - ANSWER ✔️ Non-ionizing, high frequency sound
waves
Doppler - ANSWER ✔️ Sonography used to evaluate blood flow
PACS - ANSWER ✔️ Picture Archiving & Communications
System
Tomography - conventional - ANSWER ✔️ Tube & receptor are
set in motion going different directions
Technology 8th Edition By Callaway
What are the two components of the x-ray tube? - ANSWER ✔️
Anode & Cathode
What is needed to create x-rays? - ANSWER ✔️ 1. Source of
electrons
2. Means to accelerate the electrons
3. Means to bring electrons to a sudden stop
Cathode has a filament which contains... - ANSWER ✔️ A
thermionic cloud of electrons
When the filament is heated and electrons are emitted - ANSWER
✔️ Thermionic Emission
Law of Energy Conversion - ANSWER ✔️ Energy cannot be
created or destroyed, ONLY converted from one type of energy to
another
By product of x-ray tube energy conversion - ANSWER ✔️ >99%
heat
<1% x-radiation
2 primary advantages of digital imaging - ANSWER ✔️ 1. Post-
processing image enhancement
2. Images are stored on computer
,What's a further advantage of the post-processing image
enhancement of digital imaging - ANSWER ✔️ May alter density
of contrast of image after patient has had exam
What's a further advantage of digital images being able to be
stored on a computer? - ANSWER ✔️ Having the ability to
transfer to multiple locations via network, email, or CD/Rom
An imaging plate is coated with - ANSWER ✔️ Photostimuable
phosphor
Once the photostimuable phosphor of an imaging plate is struck
with x-rays it becomes - ANSWER ✔️ Excited and remains so
until processed
Once the IP is placed in reader (processor) it is scanned with a
laser and... - ANSWER ✔️ 1. Releases the energized phosphor
2. Phosphor are converted to visible image by computer
3. Viewed on Hi-res monitor
When struck by x-ray Phosphor crystals do what - ANSWER ✔️
Glow
1 x-ray photon= - ANSWER ✔️ 1000's light photons
Photon - ANSWER ✔️ Value of electromagnetic radiation
,Purpose of an intensifying screen - ANSWER ✔️ Reduce patient
exposure
Intensifying screen is coated with what emulsion on both sides -
ANSWER ✔️ Gelatin, silver compounds, protective coating
Processed film = - ANSWER ✔️ Permanent record and legal
document
Spot film - ANSWER ✔️ Still photo from fluoro
Computed tomography - ANSWER ✔️ Provides cross sectional
views of the body
Gantry - ANSWER ✔️ X-ray tube and detectors on circular path
in CT
MRI - ANSWER ✔️ Exposed to a magnetic field and radio wave
transmission
PET - ANSWER ✔️ Positron Emission Tomography
What is injected into circulatory system for PET scan? - ANSWER
✔️ Radiopharmaceuticals
Radiopharmaceuticals - ANSWER ✔️ Mimic the body's own
components
, PET scan is used to... - ANSWER ✔️ Check function of body
organ or system
In Nuclear medicine what are introduced? - ANSWER ✔️
Radioisotopes are introduced
Radioisotopes in Nuclear Medicine attracted to - ANSWER ✔️
Areas currently in disease process
The radioisotopes of Nuclear Medicine Emit radiation that is -
ANSWER ✔️ Detected
Where is the C-arm used most? - ANSWER ✔️ OR
When is shielding extremely important? - ANSWER ✔️ When
using the C-arm
Sonography - ANSWER ✔️ Non-ionizing, high frequency sound
waves
Doppler - ANSWER ✔️ Sonography used to evaluate blood flow
PACS - ANSWER ✔️ Picture Archiving & Communications
System
Tomography - conventional - ANSWER ✔️ Tube & receptor are
set in motion going different directions
