Fluoroscopy Study Guide Exam Q’s and
A’s
Using fluoroscopy to position patients prior to taking routine radiographic
films is______ by the State of California, Radiologic Health Branch - -
Prohibited
- (T/F) Persons who have been instructed in the safe operation of
fluoroscopic equipment must demonstrate competency at their place of
employment before they can operate fluoro equipment - -True
- Radiologists must hold: - -Radiology supervisor and operator license
- Physicians must hold: - -Fluoroscopy supervisor and operator license
- (directly/ indirectly) Fluoroscopic x-ray output, and patient dose, is _______
proportional to the mA used. - -directly
- Tube current for regular, non-digital fluoroscopy typically ranges between
___ to___ mA. - -1.0 - 5.0 mA
- During non-digital spot filming, the mA utilized is typically: - -Over 100 mA
- During digital spot filming, the mA utilized is typically between ___ to ___
mA: - -1-100 mA
- As field of view is reduced with tighter collimation,
1. image will become brighter
2. image will not become brighter
3. image quality will be improved
4. image quality will be reduced - -2 and 3
- Fluoroscopic table tilt for fixed units is ____degrees to the upright position
and ___ degrees in the Trendelenburg position. - -90; 30.
- The exposure rate measured at the panel or tabletop shall be as low as
practicable and may not exceed ____ rads per minute. This converts to _____
Gyt. - -5 rads ; .05 Gyt
- In fluoroscopic systems equipped with automatic brightness control and
under the table x-ray tube, as the image intensifier is moved away from the
patient:
1. patient dose decreases
2. patient dose increases
, 3. more x-rays are intercepted at the image intensifier
4. fewer x-rays are intercepted at the image intensifier - -2 and 4
- a dead-man type fluoroscopic switch:
1. terminates the exposure when pressure is applied
2. terminates the exposure when pressure is released
3. can be operated by the foot switch - -2 and 3
- The blurring of the image as the fluoroscopic camera is moved rapidly
during a procedure is called _________ - -Tube Lag
- A fall-off in brightness at the periphery (edges) of an image is called: - -
vignetting
- Which of the following are true?
1. x-ray tube may be energized by removing the interlocking mechanism
2. the fluoroscopic tube can be energized when in the parked position
3. Must be interlocked in order for the fluoroscopic tube to be energized
4. none of the above are true - -3. Must be interlocked in order for the
fluoroscopic tube to be energized
- Fluoroscopic exposures should be "on" and then "off" as compared to a
"continuous on" time as doubling the exposure time will (increase, double, or
triple) radiation dose to the patient and operator. - -double
- The bucky slot cover and protective curtains/drapes must have a minimum
of ______ mm of _______ equivalency for adequate protection - -0.25 mm;
Lead
- The cumulative manual-reset timer may not exceed _______ minutes - -5
- (T/F) When the fluoroscopic time has exceeded a predetermined time, the
cumulative manual-reset timer must produce an audible signal and interrupt
the x-ray beam - -TRUE
- Excessive lighting in the fluoro room:
1. helps perceive dim images brighter
2. may result in an increase in technical factors
3. enhances visualization of the black and white TV images
4. helps properly adjust the overall luminescence of the TV image - -2. an
increase in technical factors
- Which of the following can adjust the mottle level of an image?
1. changing mA
2. changing kVp
3. changing exposure factors
A’s
Using fluoroscopy to position patients prior to taking routine radiographic
films is______ by the State of California, Radiologic Health Branch - -
Prohibited
- (T/F) Persons who have been instructed in the safe operation of
fluoroscopic equipment must demonstrate competency at their place of
employment before they can operate fluoro equipment - -True
- Radiologists must hold: - -Radiology supervisor and operator license
- Physicians must hold: - -Fluoroscopy supervisor and operator license
- (directly/ indirectly) Fluoroscopic x-ray output, and patient dose, is _______
proportional to the mA used. - -directly
- Tube current for regular, non-digital fluoroscopy typically ranges between
___ to___ mA. - -1.0 - 5.0 mA
- During non-digital spot filming, the mA utilized is typically: - -Over 100 mA
- During digital spot filming, the mA utilized is typically between ___ to ___
mA: - -1-100 mA
- As field of view is reduced with tighter collimation,
1. image will become brighter
2. image will not become brighter
3. image quality will be improved
4. image quality will be reduced - -2 and 3
- Fluoroscopic table tilt for fixed units is ____degrees to the upright position
and ___ degrees in the Trendelenburg position. - -90; 30.
- The exposure rate measured at the panel or tabletop shall be as low as
practicable and may not exceed ____ rads per minute. This converts to _____
Gyt. - -5 rads ; .05 Gyt
- In fluoroscopic systems equipped with automatic brightness control and
under the table x-ray tube, as the image intensifier is moved away from the
patient:
1. patient dose decreases
2. patient dose increases
, 3. more x-rays are intercepted at the image intensifier
4. fewer x-rays are intercepted at the image intensifier - -2 and 4
- a dead-man type fluoroscopic switch:
1. terminates the exposure when pressure is applied
2. terminates the exposure when pressure is released
3. can be operated by the foot switch - -2 and 3
- The blurring of the image as the fluoroscopic camera is moved rapidly
during a procedure is called _________ - -Tube Lag
- A fall-off in brightness at the periphery (edges) of an image is called: - -
vignetting
- Which of the following are true?
1. x-ray tube may be energized by removing the interlocking mechanism
2. the fluoroscopic tube can be energized when in the parked position
3. Must be interlocked in order for the fluoroscopic tube to be energized
4. none of the above are true - -3. Must be interlocked in order for the
fluoroscopic tube to be energized
- Fluoroscopic exposures should be "on" and then "off" as compared to a
"continuous on" time as doubling the exposure time will (increase, double, or
triple) radiation dose to the patient and operator. - -double
- The bucky slot cover and protective curtains/drapes must have a minimum
of ______ mm of _______ equivalency for adequate protection - -0.25 mm;
Lead
- The cumulative manual-reset timer may not exceed _______ minutes - -5
- (T/F) When the fluoroscopic time has exceeded a predetermined time, the
cumulative manual-reset timer must produce an audible signal and interrupt
the x-ray beam - -TRUE
- Excessive lighting in the fluoro room:
1. helps perceive dim images brighter
2. may result in an increase in technical factors
3. enhances visualization of the black and white TV images
4. helps properly adjust the overall luminescence of the TV image - -2. an
increase in technical factors
- Which of the following can adjust the mottle level of an image?
1. changing mA
2. changing kVp
3. changing exposure factors
