California Fluoroscopy Exam Questions with
CORRECT verified detailed Answers latest
update 2025
The overall luminescence of the TV image may be properly adjusted by:
1. increasing room lighting
2. adjusting the contrast control button on the TV monitor
3. adjusting the brightness control button on the TV monitor --- correct
answers ---2 and 3 only
Which of the following statements is true concerning fluoroscopic grids?
a. Reduces scattered radiation produced in the image intensifier
b. The typical grid ratio is 12:1
c. High ratio grids are preferred
d. Located between the patient and input layer of the image intensifier ---
correct answers ---Located between the patient and input layer of the image
intensifier
One of the most important actions a fluoroscopist can take to avoid
unnecessary radiation exposure to the patient is to use appropriate:
a. Illumination
b. Primary beam filtration
,c. Collimation
d. Protective lead curtains --- correct answers ---Collimation
The increase in effective brightness due to the size reduction of the output
image size is referred to as:
a. Total gain
b. Minification gain
c. Output gain
d. Electronic gain --- correct answers ---b. Minification gain
In a TV camera, the proportional electron charge is converted into a
proportional voltage which is sent to the:
a. Camera control unit
b. Electron gun
c. TV monitor
d. Output phosphor --- correct answers ---Camera control unit
The greatest limiting factor concerning resolution for fluoroscopic systems
is the:
a. Output phosphor
b. Video monitor
c. Input phosphor
,d. TV camera --- correct answers ---Video monitor
Since the Bucky tray cover is directly in line with the fluoroscopists gonads,
the opening must be automatically covered with ___ equivalent material.
a. 2.5 mm aluminum
b. 2.5 mm lead
c. 0.25 mm aluminum
d. 0.25 mm lead --- correct answers ---0.25 mm lead
What percentage of incident photons will emerge unaffected by the patients
tissues?
a. 50%
b. 10%
c. 1%
d. 5%
. --- correct answers ---5%
The primary purpose of protective drapes or sliding panels is to:
1. Reduce scatter to the patient
2. Reduce scatter to the operator
3. Reduce scatter to the image intensifier
, 4. Reduce radiation coming primarily from the patient --- correct answers --
-2 and 4
The components of the closed-circuit television system are:
1. vidicon camera
2. imaging intensifier
3. camera control unit
4. television monitor --- correct answers ---1, 3 and 4 only
For fluoroscopic installations, the primary barrier is considered to be the:
1. Floor
2. Ceiling
3. Walls
4. Image intensifier assembly --- correct answers ---4 only
The component in an image intensifier that regulates or changes the amount
of magnification in the virtual image is the:
a. Accelerating anode
b. Electrostatic lens
c. Magnifying lens
d. Focusing cup
CORRECT verified detailed Answers latest
update 2025
The overall luminescence of the TV image may be properly adjusted by:
1. increasing room lighting
2. adjusting the contrast control button on the TV monitor
3. adjusting the brightness control button on the TV monitor --- correct
answers ---2 and 3 only
Which of the following statements is true concerning fluoroscopic grids?
a. Reduces scattered radiation produced in the image intensifier
b. The typical grid ratio is 12:1
c. High ratio grids are preferred
d. Located between the patient and input layer of the image intensifier ---
correct answers ---Located between the patient and input layer of the image
intensifier
One of the most important actions a fluoroscopist can take to avoid
unnecessary radiation exposure to the patient is to use appropriate:
a. Illumination
b. Primary beam filtration
,c. Collimation
d. Protective lead curtains --- correct answers ---Collimation
The increase in effective brightness due to the size reduction of the output
image size is referred to as:
a. Total gain
b. Minification gain
c. Output gain
d. Electronic gain --- correct answers ---b. Minification gain
In a TV camera, the proportional electron charge is converted into a
proportional voltage which is sent to the:
a. Camera control unit
b. Electron gun
c. TV monitor
d. Output phosphor --- correct answers ---Camera control unit
The greatest limiting factor concerning resolution for fluoroscopic systems
is the:
a. Output phosphor
b. Video monitor
c. Input phosphor
,d. TV camera --- correct answers ---Video monitor
Since the Bucky tray cover is directly in line with the fluoroscopists gonads,
the opening must be automatically covered with ___ equivalent material.
a. 2.5 mm aluminum
b. 2.5 mm lead
c. 0.25 mm aluminum
d. 0.25 mm lead --- correct answers ---0.25 mm lead
What percentage of incident photons will emerge unaffected by the patients
tissues?
a. 50%
b. 10%
c. 1%
d. 5%
. --- correct answers ---5%
The primary purpose of protective drapes or sliding panels is to:
1. Reduce scatter to the patient
2. Reduce scatter to the operator
3. Reduce scatter to the image intensifier
, 4. Reduce radiation coming primarily from the patient --- correct answers --
-2 and 4
The components of the closed-circuit television system are:
1. vidicon camera
2. imaging intensifier
3. camera control unit
4. television monitor --- correct answers ---1, 3 and 4 only
For fluoroscopic installations, the primary barrier is considered to be the:
1. Floor
2. Ceiling
3. Walls
4. Image intensifier assembly --- correct answers ---4 only
The component in an image intensifier that regulates or changes the amount
of magnification in the virtual image is the:
a. Accelerating anode
b. Electrostatic lens
c. Magnifying lens
d. Focusing cup
