RADT 1010 Exam 3 Questions With Correct
Answers
What |are |the |two |main |components |of |the |X-ray |tube? |- |CORRECT |ANSWER✔✔-anode |and |
cathode
anode |electrons |are... |- |CORRECT |ANSWER✔✔-positive
cathode |electrons |are... |- |CORRECT |ANSWER✔✔-negative
part |of |the |X-ray |tube |that |maintains |a |vacuum |and |is |made |of |pyrex |glass |- |CORRECT |
ANSWER✔✔-evacuated |glass |tube
filament |emits |electrons |through... |- |CORRECT |ANSWER✔✔-thermionic |emission
what |is |the |anode |and |the |cathode |made |of |and |why? |- |CORRECT |ANSWER✔✔-tungsten, |to |
withstand |high |heat
describe |the |flow |of |electrons |in |the |x-ray |tube |- |CORRECT |ANSWER✔✔-filaments |in |the |
cathode |give |off |electrons |when |heated, |they |travel |a |short |distance |at |a |high |speed, |they |
strike |the |anode |with |high |kinetic |energy, |electrons |convert |into |heat |and |x-rays
percentage |of |heat |and |x-rays |created |at |the |anode |- |CORRECT |ANSWER✔✔-99% |heat |1% |x-
rays
collimator |- |CORRECT |ANSWER✔✔-open |lead |shutters |that |permit |the |radiographer |to |
determine |size |of |exposure |field |on |the |patient
, 2 |advantages |of |direct |digital |radiography |- |CORRECT |ANSWER✔✔-the |speed |of |image |
acquisition |and |the |ability |to |postprocess |images
list |from |least |dense |to |most |dense |6 |radiographic |densities |- |CORRECT |ANSWER✔✔-1. |air |or |
gas
2. |fat
3. |water
4. |muscle
5. |bone
6. |tooth |enamel
the |thicker |the |part |the... |- |CORRECT |ANSWER✔✔-greater |the |radiation |absorption
name |3 |factors |controlled |by |the |radiographer |(prime |factors) |- |CORRECT |ANSWER✔✔-mAs, |
kVp, |and |distance
define |milliamperage |- |CORRECT |ANSWER✔✔-determines |the |amount |of |x-rays |produced |per |
unit |of |time
define |kilvoltage |- |CORRECT |ANSWER✔✔-determines |the |wavelength/penetrating |power |of |
the |x-rays
the |greater |the |kVp... |- |CORRECT |ANSWER✔✔-1. |the |lower |the |patient |dose
2. |increases |contrast
the |greater |the |mAs... |- |CORRECT |ANSWER✔✔-1. |the |greater |the |patient |dose
2. |the |greater |the |image |darkness
Answers
What |are |the |two |main |components |of |the |X-ray |tube? |- |CORRECT |ANSWER✔✔-anode |and |
cathode
anode |electrons |are... |- |CORRECT |ANSWER✔✔-positive
cathode |electrons |are... |- |CORRECT |ANSWER✔✔-negative
part |of |the |X-ray |tube |that |maintains |a |vacuum |and |is |made |of |pyrex |glass |- |CORRECT |
ANSWER✔✔-evacuated |glass |tube
filament |emits |electrons |through... |- |CORRECT |ANSWER✔✔-thermionic |emission
what |is |the |anode |and |the |cathode |made |of |and |why? |- |CORRECT |ANSWER✔✔-tungsten, |to |
withstand |high |heat
describe |the |flow |of |electrons |in |the |x-ray |tube |- |CORRECT |ANSWER✔✔-filaments |in |the |
cathode |give |off |electrons |when |heated, |they |travel |a |short |distance |at |a |high |speed, |they |
strike |the |anode |with |high |kinetic |energy, |electrons |convert |into |heat |and |x-rays
percentage |of |heat |and |x-rays |created |at |the |anode |- |CORRECT |ANSWER✔✔-99% |heat |1% |x-
rays
collimator |- |CORRECT |ANSWER✔✔-open |lead |shutters |that |permit |the |radiographer |to |
determine |size |of |exposure |field |on |the |patient
, 2 |advantages |of |direct |digital |radiography |- |CORRECT |ANSWER✔✔-the |speed |of |image |
acquisition |and |the |ability |to |postprocess |images
list |from |least |dense |to |most |dense |6 |radiographic |densities |- |CORRECT |ANSWER✔✔-1. |air |or |
gas
2. |fat
3. |water
4. |muscle
5. |bone
6. |tooth |enamel
the |thicker |the |part |the... |- |CORRECT |ANSWER✔✔-greater |the |radiation |absorption
name |3 |factors |controlled |by |the |radiographer |(prime |factors) |- |CORRECT |ANSWER✔✔-mAs, |
kVp, |and |distance
define |milliamperage |- |CORRECT |ANSWER✔✔-determines |the |amount |of |x-rays |produced |per |
unit |of |time
define |kilvoltage |- |CORRECT |ANSWER✔✔-determines |the |wavelength/penetrating |power |of |
the |x-rays
the |greater |the |kVp... |- |CORRECT |ANSWER✔✔-1. |the |lower |the |patient |dose
2. |increases |contrast
the |greater |the |mAs... |- |CORRECT |ANSWER✔✔-1. |the |greater |the |patient |dose
2. |the |greater |the |image |darkness
