TCDHA Rad Theory FINAL Exam Questions
with Verified Correct Answers
First invented Xrays
Wilhelm Conrad Roetgen 1895
Classifications of ionizing radiation
electromagnetic, particulate
electromagnetic radiation
man made or occurs naturally, possesses no mass
Particulate radiation
tiny particles of matter that possess mass and travel in straight lines and at high speeds
Tube head is immersed in
oil, to provide electrical insulation and dispense of heat
Cathode
negative charge terminal made of tungsten
anode
postive charge terminal made of copper
Cones
8 or 16 inches
Collimator
Lead disk to restrict the size of the beam
, High mA produces
lighter image
Low kVp produces
High contrast
transformers
A device that increases or decreases the voltage of an electrical current
Compton scattering
62 percent
Roentgen does not have a _____________
SI equivalent
Paralelling technique advantages
accurate, simple, standardized
paralelling technique disadvantages
film placement, discomfort
increased target receptor distance
avoids magnification
central ray is _____degrees to receptor
90
if the lack of parallelism is _______ the image is acceptable
less than 20
with Verified Correct Answers
First invented Xrays
Wilhelm Conrad Roetgen 1895
Classifications of ionizing radiation
electromagnetic, particulate
electromagnetic radiation
man made or occurs naturally, possesses no mass
Particulate radiation
tiny particles of matter that possess mass and travel in straight lines and at high speeds
Tube head is immersed in
oil, to provide electrical insulation and dispense of heat
Cathode
negative charge terminal made of tungsten
anode
postive charge terminal made of copper
Cones
8 or 16 inches
Collimator
Lead disk to restrict the size of the beam
, High mA produces
lighter image
Low kVp produces
High contrast
transformers
A device that increases or decreases the voltage of an electrical current
Compton scattering
62 percent
Roentgen does not have a _____________
SI equivalent
Paralelling technique advantages
accurate, simple, standardized
paralelling technique disadvantages
film placement, discomfort
increased target receptor distance
avoids magnification
central ray is _____degrees to receptor
90
if the lack of parallelism is _______ the image is acceptable
less than 20
