TCDHA Radiography Theory | | |
Midterm review questions | | |
with verified solutions | |
Scatter radiation - Correct answer ✔- form of secondary radiation
| | | | | | | | |
- result of xray photon deflected in all directions travelling to all parts of client's
| | | | | | | | | | | | | | |
body and to all areas of the op
| | | | | | |
- detrimental to client and radiographer
| | | | |
Compton scatter - Correct answer ✔- Evidence of ionization
| | | | | | | |
- xra photon collides w outer shell + gives up part of its energy to eject electron
| | | | | | | | | | | | | | | | |
from it's orbit | |
- ejected electron is known as compton or recoil electron
| | | | | | | | |
Coherent scatter - Correct answer ✔- unmodified scatter
| | | | | | |
- when low energy photons interact with outer shell electron
| | | | | | | | |
- no changes in atom
| | | |
- no ionization
| |
- 8% percent of xradiation
| | | |
PID (positioning indicating device) - Correct answer ✔- projects from tube head
| | | | | | | | | | |
and used to direct xradiation to client's face
| | | | | | | | |
- lead lined to prevent scatter radiation
| | | | | |
,- cones are short or long (8" or 16")
| | | | | | | |
Milliamperage - Correct answer ✔- refers to totaly quantity of xrays produced
| | | | | | | | | | |
- controls film blackening
| | |
Higher mA, darker the xray
| | | |
kV - Correct answer ✔Higher kVp = higher penetrating power
| | | | | | | | |
Tungsten target - Correct answer ✔Aka wolfram
| | | | | |
Attached to copper stem | | |
Speeding electrons hit the tungsten target
| | | | |
Aluminum filter - Correct answer ✔Filters out long wavelengths with poor
| | | | | | | | | | |
penetration power |
Ionization - Correct answer ✔The production of ions, or the process of
| | | | | | | | | | | |
converting an atom into ions | | | |
Deals with only electrons
| | |
Primary Radiation - Correct answer ✔- xray thats produced at target or anode
| | | | | | | | | | | | |
and exit the tubehead
| | |
, Secondary Radiation - Correct answer ✔x-radiation that is created when the
| | | | | | | | | | |
primary beam interacts with matter. | | | |
Eg. Soft tissue of head, cranial bones and teeth
| | | | | | | |
Scatter radiation - Correct answer ✔- secondary radiation
| | | | | | |
- result of xray photon deflected in all directions travelling to all parts of the
| | | | | | | | | | | | | | |
clien'ts body and to all areas of the operatory
| | | | | | | |
Electrical force (Binding force) - Correct answer ✔- electrostatic force or
| | | | | | | | | | |
attraction between the positive nucleus and the negative electrons
| | | | | | | |
- k shell is strongest
| | | |
Cathode - Correct answer ✔Negative charge terminal
| | | | | |
Hotter the filament. More electrons produced
| | | | |
Anode - Correct answer ✔Positive charge terminal
| | | | | |
Mostly made up of copper rod
| | | | |
Copper like oil used to dissipate heat
| | | | | |
Matter - Correct answer ✔Anything that has mass and occupies space
| | | | | | | | | |
When matter is altered, energy results
| | | | |
All matter is composed of atoms
| | | | |
Midterm review questions | | |
with verified solutions | |
Scatter radiation - Correct answer ✔- form of secondary radiation
| | | | | | | | |
- result of xray photon deflected in all directions travelling to all parts of client's
| | | | | | | | | | | | | | |
body and to all areas of the op
| | | | | | |
- detrimental to client and radiographer
| | | | |
Compton scatter - Correct answer ✔- Evidence of ionization
| | | | | | | |
- xra photon collides w outer shell + gives up part of its energy to eject electron
| | | | | | | | | | | | | | | | |
from it's orbit | |
- ejected electron is known as compton or recoil electron
| | | | | | | | |
Coherent scatter - Correct answer ✔- unmodified scatter
| | | | | | |
- when low energy photons interact with outer shell electron
| | | | | | | | |
- no changes in atom
| | | |
- no ionization
| |
- 8% percent of xradiation
| | | |
PID (positioning indicating device) - Correct answer ✔- projects from tube head
| | | | | | | | | | |
and used to direct xradiation to client's face
| | | | | | | | |
- lead lined to prevent scatter radiation
| | | | | |
,- cones are short or long (8" or 16")
| | | | | | | |
Milliamperage - Correct answer ✔- refers to totaly quantity of xrays produced
| | | | | | | | | | |
- controls film blackening
| | |
Higher mA, darker the xray
| | | |
kV - Correct answer ✔Higher kVp = higher penetrating power
| | | | | | | | |
Tungsten target - Correct answer ✔Aka wolfram
| | | | | |
Attached to copper stem | | |
Speeding electrons hit the tungsten target
| | | | |
Aluminum filter - Correct answer ✔Filters out long wavelengths with poor
| | | | | | | | | | |
penetration power |
Ionization - Correct answer ✔The production of ions, or the process of
| | | | | | | | | | | |
converting an atom into ions | | | |
Deals with only electrons
| | |
Primary Radiation - Correct answer ✔- xray thats produced at target or anode
| | | | | | | | | | | | |
and exit the tubehead
| | |
, Secondary Radiation - Correct answer ✔x-radiation that is created when the
| | | | | | | | | | |
primary beam interacts with matter. | | | |
Eg. Soft tissue of head, cranial bones and teeth
| | | | | | | |
Scatter radiation - Correct answer ✔- secondary radiation
| | | | | | |
- result of xray photon deflected in all directions travelling to all parts of the
| | | | | | | | | | | | | | |
clien'ts body and to all areas of the operatory
| | | | | | | |
Electrical force (Binding force) - Correct answer ✔- electrostatic force or
| | | | | | | | | | |
attraction between the positive nucleus and the negative electrons
| | | | | | | |
- k shell is strongest
| | | |
Cathode - Correct answer ✔Negative charge terminal
| | | | | |
Hotter the filament. More electrons produced
| | | | |
Anode - Correct answer ✔Positive charge terminal
| | | | | |
Mostly made up of copper rod
| | | | |
Copper like oil used to dissipate heat
| | | | | |
Matter - Correct answer ✔Anything that has mass and occupies space
| | | | | | | | | |
When matter is altered, energy results
| | | | |
All matter is composed of atoms
| | | | |
