RAD 112 Midterm Review | Latest study |
Questions and verified Answers
In the diagnostic range, most x-rays are ______________.
a. low energy
b. visible
c. characteristic
d. brems - ANSW-d. brems
What is the most common material added to an x-ray system for filtration?
a. plastic
b. tungsten
c. wood
d. aluminium - ANSW-d. aluminium
Which combination of technical factors results in a lower patient dose?
a. low kV, low mAs
b. high kV, low mAs
c. low kV, high mAs
d. high kV, high mAs - ANSW-b. high kV, low mAs
With regards to an emission spectrum chart, increasing the mA or time will have what effect?
a. increase amplitude
b. decrease amplitude
c. shift to the right
d. increase in amplitude AND a shift to the right - ANSW-a. increase amplitude
If a technologist receives 3 mR of exposure at a distance of 3 meters from the patient, how much
exposure will he/she receive at a new distance of 5 meters?
a. 4.1
b. 1.8 mR
c. 1.1 mR
d. 2.2 mR - ANSW-c. 1.1 mR
When the average energy of an x-ray beam increases, the beam is said to have been
___________________.
a. weakend
b. softened
c. attenuated
d. hardened - ANSW-d. hardened
An exposure was taken with the following factors and yielding satisfactory density; 80kV, 200mA, 0.7
seconds, 60" SID. A repeat image will be taken from a new distance of 72". What change will be
necessary to maintain the density recorded on the first image?
a. decrease kV to 68
b. increase mAs to 202
, c. increase kV to 82
decrease mAs to 98 - ANSW-c. increase kV to 82
The HVL for a particular exposure is 3 cm of soft tissue and the body part being imaged is 6 cm thick. If
there were 120,000 x-rays striking the patient, how many will be exiting the patient to create an image
by interacting with the IR?
a. 60,000
b. 30,000
c. 15,000
d. 7.500 - ANSW-b. 30,000
High contrast images are always preferred over low contrast images.
a. true
b. false - ANSW-b. false
What material/s represent added filtration; A.) Mirror Backing, B.) Sheet of aluminum, C.) Glass window
of tube enclosure?
a. B only
b. C only
c. A only
d. A & B
e. A & C - ANSW-d. A & B
Which technical factor controls the penetrability of the beam?
a. time
b. SID
c. mA
d. kVp - ANSW-d. kVp
With regards to an emission spectrum chart, increasing the kVp will have what effect; A.) Shift to the
right, B.) Increase the Amplitude, C.) Shift to the left, D.) Decrease the Amplitude?
a. A & B
b. C & D
c. D only
d. B only - ANSW-a. A & B
Any material can constitute a HVL given the appropriate thickness of said material is used.
a. true
b. false - ANSW-a. true
HVL is dependent on which technical factor selected by the technologist?
a. kVp
b. distance
c. mA
d. time - ANSW-a. kVp
When using a compensating filter, which part of the body with the thick portion of the filter be aligned
with?
Questions and verified Answers
In the diagnostic range, most x-rays are ______________.
a. low energy
b. visible
c. characteristic
d. brems - ANSW-d. brems
What is the most common material added to an x-ray system for filtration?
a. plastic
b. tungsten
c. wood
d. aluminium - ANSW-d. aluminium
Which combination of technical factors results in a lower patient dose?
a. low kV, low mAs
b. high kV, low mAs
c. low kV, high mAs
d. high kV, high mAs - ANSW-b. high kV, low mAs
With regards to an emission spectrum chart, increasing the mA or time will have what effect?
a. increase amplitude
b. decrease amplitude
c. shift to the right
d. increase in amplitude AND a shift to the right - ANSW-a. increase amplitude
If a technologist receives 3 mR of exposure at a distance of 3 meters from the patient, how much
exposure will he/she receive at a new distance of 5 meters?
a. 4.1
b. 1.8 mR
c. 1.1 mR
d. 2.2 mR - ANSW-c. 1.1 mR
When the average energy of an x-ray beam increases, the beam is said to have been
___________________.
a. weakend
b. softened
c. attenuated
d. hardened - ANSW-d. hardened
An exposure was taken with the following factors and yielding satisfactory density; 80kV, 200mA, 0.7
seconds, 60" SID. A repeat image will be taken from a new distance of 72". What change will be
necessary to maintain the density recorded on the first image?
a. decrease kV to 68
b. increase mAs to 202
, c. increase kV to 82
decrease mAs to 98 - ANSW-c. increase kV to 82
The HVL for a particular exposure is 3 cm of soft tissue and the body part being imaged is 6 cm thick. If
there were 120,000 x-rays striking the patient, how many will be exiting the patient to create an image
by interacting with the IR?
a. 60,000
b. 30,000
c. 15,000
d. 7.500 - ANSW-b. 30,000
High contrast images are always preferred over low contrast images.
a. true
b. false - ANSW-b. false
What material/s represent added filtration; A.) Mirror Backing, B.) Sheet of aluminum, C.) Glass window
of tube enclosure?
a. B only
b. C only
c. A only
d. A & B
e. A & C - ANSW-d. A & B
Which technical factor controls the penetrability of the beam?
a. time
b. SID
c. mA
d. kVp - ANSW-d. kVp
With regards to an emission spectrum chart, increasing the kVp will have what effect; A.) Shift to the
right, B.) Increase the Amplitude, C.) Shift to the left, D.) Decrease the Amplitude?
a. A & B
b. C & D
c. D only
d. B only - ANSW-a. A & B
Any material can constitute a HVL given the appropriate thickness of said material is used.
a. true
b. false - ANSW-a. true
HVL is dependent on which technical factor selected by the technologist?
a. kVp
b. distance
c. mA
d. time - ANSW-a. kVp
When using a compensating filter, which part of the body with the thick portion of the filter be aligned
with?
