1|Page
NVCC RAD 105 FINAL EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
xrays are emitted through - .....ANSWER ...✔✔ a
window in the xray tube
xrays are measured in the form of - .....ANSWER
...✔✔ a spectrum of energies
xray beams are characterized by their (2) -
.....ANSWER ...✔✔ number of xrays in the beam and
their average energy
quality of the beam is also - .....ANSWER ...✔✔
penetrability/energy
qualtity=intensity
,2|Page
_________ in xray is the amount of xray energy that
passes through the object and reaches the detector -
.....ANSWER ...✔✔ intensity
intensity is measured in - .....ANSWER ...✔✔ mGya
and is the air kerma or kinetic energy released in matter
The mGya is a measure of the number of _______
________ produced in air by a quantity of X-rays -
.....ANSWER ...✔✔ ion pairs
does ionization of air increase of decrease as the
number of xrays in the beam increases? - .....ANSWER
...✔✔ increase
what factors affect xray quantity/intensity -
.....ANSWER ...✔✔ mAs, kVp, distance, filtration
if you increase kvp or mas what happens to your
intensity? - .....ANSWER ...✔✔ increase
if you decrease distance and filtration what happens to
your intensity? - .....ANSWER ...✔✔ increase
,3|Page
xray intensity is directly proportional to the -
.....ANSWER ...✔✔ mAs
xray intensity varies inversly with the square of the
distance from the xray tube target - .....ANSWER
...✔✔ inverse square law
when SID is increased mAs must be increased by what to
maintain constant exposure? - .....ANSWER ...✔✔
SID^2
compensating for and SID change by changing mAs -
.....ANSWER ...✔✔ direct square law
xray imaging systems use filters made of ______
usually how much aluminum is positioned in the useful
beam? - .....ANSWER ...✔✔ metal
1-5mm
calculating how much dose is reduced by filtration is
used with the - .....ANSWER ...✔✔ HVL
, 4|Page
as the energy of the beam increases, so does the -
.....ANSWER ...✔✔ penetrability
high quality xrays penetrate ___________ than low
quality xrays - .....ANSWER ...✔✔ deeper
principal factors influencing xray beam energy are (2) -
.....ANSWER ...✔✔ kvp and added filtration
distance and mAs DONT affect radiation - .....ANSWER
...✔✔ quality/energy
distance and mAs DO affect radiation - .....ANSWER
...✔✔ intensity/quantity
the reduction in the intensity of the xray beam as it
passes through different materials - .....ANSWER
...✔✔ attenuation
xrays of any given energy are more penetrating in
material of ________ atomic number than _______
atomic number - .....ANSWER ...✔✔ low
high
NVCC RAD 105 FINAL EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
xrays are emitted through - .....ANSWER ...✔✔ a
window in the xray tube
xrays are measured in the form of - .....ANSWER
...✔✔ a spectrum of energies
xray beams are characterized by their (2) -
.....ANSWER ...✔✔ number of xrays in the beam and
their average energy
quality of the beam is also - .....ANSWER ...✔✔
penetrability/energy
qualtity=intensity
,2|Page
_________ in xray is the amount of xray energy that
passes through the object and reaches the detector -
.....ANSWER ...✔✔ intensity
intensity is measured in - .....ANSWER ...✔✔ mGya
and is the air kerma or kinetic energy released in matter
The mGya is a measure of the number of _______
________ produced in air by a quantity of X-rays -
.....ANSWER ...✔✔ ion pairs
does ionization of air increase of decrease as the
number of xrays in the beam increases? - .....ANSWER
...✔✔ increase
what factors affect xray quantity/intensity -
.....ANSWER ...✔✔ mAs, kVp, distance, filtration
if you increase kvp or mas what happens to your
intensity? - .....ANSWER ...✔✔ increase
if you decrease distance and filtration what happens to
your intensity? - .....ANSWER ...✔✔ increase
,3|Page
xray intensity is directly proportional to the -
.....ANSWER ...✔✔ mAs
xray intensity varies inversly with the square of the
distance from the xray tube target - .....ANSWER
...✔✔ inverse square law
when SID is increased mAs must be increased by what to
maintain constant exposure? - .....ANSWER ...✔✔
SID^2
compensating for and SID change by changing mAs -
.....ANSWER ...✔✔ direct square law
xray imaging systems use filters made of ______
usually how much aluminum is positioned in the useful
beam? - .....ANSWER ...✔✔ metal
1-5mm
calculating how much dose is reduced by filtration is
used with the - .....ANSWER ...✔✔ HVL
, 4|Page
as the energy of the beam increases, so does the -
.....ANSWER ...✔✔ penetrability
high quality xrays penetrate ___________ than low
quality xrays - .....ANSWER ...✔✔ deeper
principal factors influencing xray beam energy are (2) -
.....ANSWER ...✔✔ kvp and added filtration
distance and mAs DONT affect radiation - .....ANSWER
...✔✔ quality/energy
distance and mAs DO affect radiation - .....ANSWER
...✔✔ intensity/quantity
the reduction in the intensity of the xray beam as it
passes through different materials - .....ANSWER
...✔✔ attenuation
xrays of any given energy are more penetrating in
material of ________ atomic number than _______
atomic number - .....ANSWER ...✔✔ low
high
