TCDHA Radiography Theory Midterm review
Study online at https://quizlet.com/_flfoah
1. Scatter radiation - 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
2. Compton scatter - 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
3. Coherent scatter - unmodified scatter
- when low energy photons interact with outer shell electron
- no changes in atom
- no ionization
- 8% percent of xradiation
4. PID (positioning indi- - projects from tube head and used to direct xradiation to client's face
cating device) - lead lined to prevent scatter radiation
- cones are short or long (8" or 16")
5. Milliamperage - refers to totaly quantity of xrays produced
- controls film blackening
Higher mA, darker the xray
6. kV Higher kVp = higher penetrating power
7. Tungsten target Aka wolfram
Attached to copper stem
Speeding electrons hit the tungsten target
8. Aluminum filter Filters out long wavelengths with poor penetration power
9. Ionization
, TCDHA Radiography Theory Midterm review
Study online at https://quizlet.com/_flfoah
The production of ions, or the process of converting an atom into ions
Deals with only electrons
10. Primary Radiation - xray thats produced at target or anode and exit the tubehead
11. Secondary Radiation x-radiation that is created when the primary beam interacts with matter.
Eg. Soft tissue of head, cranial bones and teeth
12. Scatter radiation - 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
13. Electrical force (Bind- - electrostatic force or attraction between the positive nucleus and the
ing force) negative electrons
- k shell is strongest
14. Cathode Negative charge terminal
Hotter the filament. More electrons produced
15. Anode Positive charge terminal
Mostly made up of copper rod
Copper like oil used to dissipate heat
16. Matter Anything that has mass and occupies space
When matter is altered, energy results
All matter is composed of atoms
17. Atom Tiny, invisible particle thats the fundamental unit of matter
Consists of 2 parts: nucleus and orbital electrons
118 different atoms identified (periodic table)
18. Nucleus
, TCDHA Radiography Theory Midterm review
Study online at https://quizlet.com/_flfoah
Core of atom
Composed of protons, neutrons and electrons
Atom= football stadium nucleus = football
19. Atomic weight/mass Number of protons and neutrons in the nucleus
number
20. Atomic number # of protons inside nucleus = number of electrons outside nucleus
21. How are atoms joined? By chemical bonds
22. How can molecules Transfer of electrons or by the sharing of electrons
forms?
23. Ion An atom or molecule which has lost or gained one or more electrons,
making it positively or negatively charged
24. Ionizing radiation Radiation that is capable of producing ions by removing or adding an
electron to an atom
25. 2 classifications of ion- Particulate and electromagnetic
izing radiation
26. Particulate radiation tiny particles of matter that possess mass and travel in straight lines and
at high speeds; transmits kinetic energy
27. Beta particles Fast moving electrons emitting from the nucleus
28. Cathode ray Stream of high speed electrons originating in an x-ray tube
29. Alpha particles Protons and neutrons emitting from the nuclei of heavy metals
30. Electromagnetic radia- Radiation thats manmade or occurs naturally
tion Possesses no mass, weight or electrical charge
Study online at https://quizlet.com/_flfoah
1. Scatter radiation - 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
2. Compton scatter - 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
3. Coherent scatter - unmodified scatter
- when low energy photons interact with outer shell electron
- no changes in atom
- no ionization
- 8% percent of xradiation
4. PID (positioning indi- - projects from tube head and used to direct xradiation to client's face
cating device) - lead lined to prevent scatter radiation
- cones are short or long (8" or 16")
5. Milliamperage - refers to totaly quantity of xrays produced
- controls film blackening
Higher mA, darker the xray
6. kV Higher kVp = higher penetrating power
7. Tungsten target Aka wolfram
Attached to copper stem
Speeding electrons hit the tungsten target
8. Aluminum filter Filters out long wavelengths with poor penetration power
9. Ionization
, TCDHA Radiography Theory Midterm review
Study online at https://quizlet.com/_flfoah
The production of ions, or the process of converting an atom into ions
Deals with only electrons
10. Primary Radiation - xray thats produced at target or anode and exit the tubehead
11. Secondary Radiation x-radiation that is created when the primary beam interacts with matter.
Eg. Soft tissue of head, cranial bones and teeth
12. Scatter radiation - 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
13. Electrical force (Bind- - electrostatic force or attraction between the positive nucleus and the
ing force) negative electrons
- k shell is strongest
14. Cathode Negative charge terminal
Hotter the filament. More electrons produced
15. Anode Positive charge terminal
Mostly made up of copper rod
Copper like oil used to dissipate heat
16. Matter Anything that has mass and occupies space
When matter is altered, energy results
All matter is composed of atoms
17. Atom Tiny, invisible particle thats the fundamental unit of matter
Consists of 2 parts: nucleus and orbital electrons
118 different atoms identified (periodic table)
18. Nucleus
, TCDHA Radiography Theory Midterm review
Study online at https://quizlet.com/_flfoah
Core of atom
Composed of protons, neutrons and electrons
Atom= football stadium nucleus = football
19. Atomic weight/mass Number of protons and neutrons in the nucleus
number
20. Atomic number # of protons inside nucleus = number of electrons outside nucleus
21. How are atoms joined? By chemical bonds
22. How can molecules Transfer of electrons or by the sharing of electrons
forms?
23. Ion An atom or molecule which has lost or gained one or more electrons,
making it positively or negatively charged
24. Ionizing radiation Radiation that is capable of producing ions by removing or adding an
electron to an atom
25. 2 classifications of ion- Particulate and electromagnetic
izing radiation
26. Particulate radiation tiny particles of matter that possess mass and travel in straight lines and
at high speeds; transmits kinetic energy
27. Beta particles Fast moving electrons emitting from the nucleus
28. Cathode ray Stream of high speed electrons originating in an x-ray tube
29. Alpha particles Protons and neutrons emitting from the nuclei of heavy metals
30. Electromagnetic radia- Radiation thats manmade or occurs naturally
tion Possesses no mass, weight or electrical charge
