1|Page
TCDHA RAD Midterm Exam 2026 Review with 100 Practice
Questions and Correct Answers/ RAD Midterm TCDHA
Practice Test 2026
Scatter radiation - ..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 - ..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 - ..ANSWER...✓✓ - unmodified scatter
- when low energy photons interact with outer shell
electron
- no changes in atom
- no ionization
- 8% percent of xradiation
,2|Page
PID (positioning indicating device) - ..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 - ..ANSWER...✓✓ - refers to totaly
quantity of xrays produced
- controls film blackening
Higher mA, darker the xray
kV - ..ANSWER...✓✓ Higher kVp = higher penetrating
power
Tungsten target - ..ANSWER...✓✓ Aka wolfram
Attached to copper stem
Speeding electrons hit the tungsten target
Aluminum filter - ..ANSWER...✓✓ Filters out long
wavelengths with poor penetration power
,3|Page
Ionization - ..ANSWER...✓✓ The production of ions, or the
process of converting an atom into ions
Deals with only electrons
Primary Radiation - ..ANSWER...✓✓ - xray thats
produced at target or anode and exit the tubehead
Secondary Radiation - ..ANSWER...✓✓ x-radiation that is
created when the primary beam interacts with matter.
Eg. Soft tissue of head, cranial bones and teeth
Scatter radiation - ..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) - ..ANSWER...✓✓ -
electrostatic force or attraction between the positive
nucleus and the negative electrons
- k shell is strongest
, 4|Page
Cathode - ..ANSWER...✓✓ Negative charge terminal
Hotter the filament. More electrons produced
Anode - ..ANSWER...✓✓ Positive charge terminal
Mostly made up of copper rod
Copper like oil used to dissipate heat
Matter - ..ANSWER...✓✓ Anything that has mass and
occupies space
When matter is altered, energy results
All matter is composed of atoms
Atom - ..ANSWER...✓✓ Tiny, invisible particle thats the
fundamental unit of matter
Consists of 2 parts: nucleus and orbital electrons
118 different atoms identified (periodic table)
Nucleus - ..ANSWER...✓✓ Core of atom
Composed of protons, neutrons and electrons
Atom= football stadium nucleus = football
TCDHA RAD Midterm Exam 2026 Review with 100 Practice
Questions and Correct Answers/ RAD Midterm TCDHA
Practice Test 2026
Scatter radiation - ..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 - ..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 - ..ANSWER...✓✓ - unmodified scatter
- when low energy photons interact with outer shell
electron
- no changes in atom
- no ionization
- 8% percent of xradiation
,2|Page
PID (positioning indicating device) - ..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 - ..ANSWER...✓✓ - refers to totaly
quantity of xrays produced
- controls film blackening
Higher mA, darker the xray
kV - ..ANSWER...✓✓ Higher kVp = higher penetrating
power
Tungsten target - ..ANSWER...✓✓ Aka wolfram
Attached to copper stem
Speeding electrons hit the tungsten target
Aluminum filter - ..ANSWER...✓✓ Filters out long
wavelengths with poor penetration power
,3|Page
Ionization - ..ANSWER...✓✓ The production of ions, or the
process of converting an atom into ions
Deals with only electrons
Primary Radiation - ..ANSWER...✓✓ - xray thats
produced at target or anode and exit the tubehead
Secondary Radiation - ..ANSWER...✓✓ x-radiation that is
created when the primary beam interacts with matter.
Eg. Soft tissue of head, cranial bones and teeth
Scatter radiation - ..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) - ..ANSWER...✓✓ -
electrostatic force or attraction between the positive
nucleus and the negative electrons
- k shell is strongest
, 4|Page
Cathode - ..ANSWER...✓✓ Negative charge terminal
Hotter the filament. More electrons produced
Anode - ..ANSWER...✓✓ Positive charge terminal
Mostly made up of copper rod
Copper like oil used to dissipate heat
Matter - ..ANSWER...✓✓ Anything that has mass and
occupies space
When matter is altered, energy results
All matter is composed of atoms
Atom - ..ANSWER...✓✓ Tiny, invisible particle thats the
fundamental unit of matter
Consists of 2 parts: nucleus and orbital electrons
118 different atoms identified (periodic table)
Nucleus - ..ANSWER...✓✓ Core of atom
Composed of protons, neutrons and electrons
Atom= football stadium nucleus = football
