FLUOROSCOPY EXAM QUESTIONS & ANSWERS
Which camera type has the greatest lag? - Answers - vidcom
This personnel monitoring device discharges a capacitor by the ionization of air when in
the presence of radiation:
a) Audible warning device.
b) Thermoluminescent Dosimeter.
c) Pocket chamber.
d) Pocket ionization chamber. - Answers - c) Pocket chamber, and.
d) Pocket ionization chamber.
Explanation:
Pocket ionization chambers discharge a capacitor by ionization of air within a chamber
when in the presence of ionizing radiation. The self-reading versions allow immediate
reading of radiation exposure by the operator.
The following may cause long-term effects from radiation exposure:
a) Prior low-dose exposure (<25 rads).
b) Prior high-dose exposure.
c) Chronic low-dose exposure over years. - Answers - Prior high-dose exposure, and.
Chronic low-dose exposure over years.
Explanation:
Long-term effects may result from high-dose exposures or chronic low-dose exposures.
Exposure to 25 rads or less of radiation is not thought to cause injury.
In California, how frequently must tube potential k.V.p. and current m.A. must be
monitored? - Answers - Weekly
This area is defined as one in which an individual could receive a dose equivalent
greater than 1 m.S.v. in 1 hour. - Answers - High Radiation Area
Explanation: A "high radiation area" is one in which there exists radiation levels that
could result in an individual receiving a dose equivalent in excess of 1 m.S.v. in 1 hour
at 30 cm from the radiation source.
,If you decrease the target-to-panel distance for patients, Patients dose is: - Answers -
Increase.,
Explanation: The target is the origin of the x-ray beam. Decreasing the target-to-panel
distance puts the patient closer to the x-ray beam source. Patient dose is inversely
proportional to the target-to-panel distance, such that decreasing this distance
increases the patient dose.
According to the National Council on Radiation Protection and Measurements (NCRP),
how many days after the onset of menses is it safest to perform x-rays?
Greater than 2 weeks
10-14 days
0-5 days
6-9 days - Answers - 10 to 14 days
Explanation:
According to the N.C.R.P. , 10 to 14 days after the onset of menses it is improbable that
a woman would be pregnant and so this is the safest time to perform x-ray
examinations.
The smallest element of a digital image is known as a:
Matrix
Pixel
Decimal
Binary
Explanation:
The smallest element of a digital image is a pixel. A two-dimensional array of pixels is
known as a matrix. Binary is a way of encoding values using only 0 and 1, whereas
decimals use 0 through 9. - Answers - Pixel.
Explanation:
The smallest element of a digital image is a pixel. A two-dimensional array of pixels is
known as a matrix. Binary is a way of encoding values using only 0 and 1, whereas
decimals use 0 through 9.
At what height above the tabletop should an unexposed border on the fluoroscopic
screen be visible when automatic collimating devices are used?
,1 inch
6 inches
14 inches
All heights - Answers - All heights
Explanation:
An unexposed border must be visible when the screen carriage is positioned 14 inches
above the tabletop and collimators are fully opened and at all heights when automatic
collimating devices are used.
Fluoroscopy technologists can do which of the following: select all that apply.
a) Use fluoroscopic equipment without an order.
b) Report a diagnosis to a patient if ordered by doctor.
c) Make a diagnosis based on a fluoroscopic image.
d) Position patients correctly during fluoroscopy. - Answers - A. Position patients
correctly during fluoroscopy, and. D. Report a diagnosis to a patient if ordered by a
doctor.
Explanation:
Fluoroscopy technologists are only allowed to perform fluoroscopy with a specific order
from a physician.
And, report a diagnosis if ordered by a physician.
What documentation is necessary in order to expose human beings to X-rays for
diagnostic purposes? - Answers - I. Technologist fluoroscopy permit.
II. Supervisor and Operator radiology certificate.
III. Supervisor and Operator fluoroscopy permit.
Explanation: Only persons who possess proper, valid, and up-to-date Supervisor and
Operator Radiology certificates, Supervisor and Operator Fluoroscopy permits or
Technologists Fluoroscopy permits issued by the State.
How many horizontal lines do television monitors typically have? - Answers - 525 lines
Explanation:
Horizontal scan lines represent the total number of lines in a picture and is generally
fixed at 525 lines. This number is independent of television size.
Which of the following diseases was seen in early radiologists?
, Kidney cancer.
Leukemia.
Osteosarcoma.
Neuroblastoma. - Answers - Leukemia
Explanation:
Early radiologists manifested a significant increase in skin malignancies and leukemias.
Scatter radiation could be as high as 500 millirads per hour at how far from the patient.
6 inches
1 foot
3 feet
6 feet - Answers - 1 foot
Explanation:
At 1 foot from the patient typical exposure can be as high as 500
How thick (in lead equivalent) must protective curtains be?
0.25 mm
0.5 mm
2.0 mm
5 mm - Answers - 0.25 mm
Explanation:
Protective curtains must be at least 0.25 mm lead equivalent and should be positioned
between the patient and the fluoroscopist.
Too much lighting during a fluoroscopy exam:
a) Helps to see images better
b) Improves visualization of television images
c) May increase fluoroscopy time
Which camera type has the greatest lag? - Answers - vidcom
This personnel monitoring device discharges a capacitor by the ionization of air when in
the presence of radiation:
a) Audible warning device.
b) Thermoluminescent Dosimeter.
c) Pocket chamber.
d) Pocket ionization chamber. - Answers - c) Pocket chamber, and.
d) Pocket ionization chamber.
Explanation:
Pocket ionization chambers discharge a capacitor by ionization of air within a chamber
when in the presence of ionizing radiation. The self-reading versions allow immediate
reading of radiation exposure by the operator.
The following may cause long-term effects from radiation exposure:
a) Prior low-dose exposure (<25 rads).
b) Prior high-dose exposure.
c) Chronic low-dose exposure over years. - Answers - Prior high-dose exposure, and.
Chronic low-dose exposure over years.
Explanation:
Long-term effects may result from high-dose exposures or chronic low-dose exposures.
Exposure to 25 rads or less of radiation is not thought to cause injury.
In California, how frequently must tube potential k.V.p. and current m.A. must be
monitored? - Answers - Weekly
This area is defined as one in which an individual could receive a dose equivalent
greater than 1 m.S.v. in 1 hour. - Answers - High Radiation Area
Explanation: A "high radiation area" is one in which there exists radiation levels that
could result in an individual receiving a dose equivalent in excess of 1 m.S.v. in 1 hour
at 30 cm from the radiation source.
,If you decrease the target-to-panel distance for patients, Patients dose is: - Answers -
Increase.,
Explanation: The target is the origin of the x-ray beam. Decreasing the target-to-panel
distance puts the patient closer to the x-ray beam source. Patient dose is inversely
proportional to the target-to-panel distance, such that decreasing this distance
increases the patient dose.
According to the National Council on Radiation Protection and Measurements (NCRP),
how many days after the onset of menses is it safest to perform x-rays?
Greater than 2 weeks
10-14 days
0-5 days
6-9 days - Answers - 10 to 14 days
Explanation:
According to the N.C.R.P. , 10 to 14 days after the onset of menses it is improbable that
a woman would be pregnant and so this is the safest time to perform x-ray
examinations.
The smallest element of a digital image is known as a:
Matrix
Pixel
Decimal
Binary
Explanation:
The smallest element of a digital image is a pixel. A two-dimensional array of pixels is
known as a matrix. Binary is a way of encoding values using only 0 and 1, whereas
decimals use 0 through 9. - Answers - Pixel.
Explanation:
The smallest element of a digital image is a pixel. A two-dimensional array of pixels is
known as a matrix. Binary is a way of encoding values using only 0 and 1, whereas
decimals use 0 through 9.
At what height above the tabletop should an unexposed border on the fluoroscopic
screen be visible when automatic collimating devices are used?
,1 inch
6 inches
14 inches
All heights - Answers - All heights
Explanation:
An unexposed border must be visible when the screen carriage is positioned 14 inches
above the tabletop and collimators are fully opened and at all heights when automatic
collimating devices are used.
Fluoroscopy technologists can do which of the following: select all that apply.
a) Use fluoroscopic equipment without an order.
b) Report a diagnosis to a patient if ordered by doctor.
c) Make a diagnosis based on a fluoroscopic image.
d) Position patients correctly during fluoroscopy. - Answers - A. Position patients
correctly during fluoroscopy, and. D. Report a diagnosis to a patient if ordered by a
doctor.
Explanation:
Fluoroscopy technologists are only allowed to perform fluoroscopy with a specific order
from a physician.
And, report a diagnosis if ordered by a physician.
What documentation is necessary in order to expose human beings to X-rays for
diagnostic purposes? - Answers - I. Technologist fluoroscopy permit.
II. Supervisor and Operator radiology certificate.
III. Supervisor and Operator fluoroscopy permit.
Explanation: Only persons who possess proper, valid, and up-to-date Supervisor and
Operator Radiology certificates, Supervisor and Operator Fluoroscopy permits or
Technologists Fluoroscopy permits issued by the State.
How many horizontal lines do television monitors typically have? - Answers - 525 lines
Explanation:
Horizontal scan lines represent the total number of lines in a picture and is generally
fixed at 525 lines. This number is independent of television size.
Which of the following diseases was seen in early radiologists?
, Kidney cancer.
Leukemia.
Osteosarcoma.
Neuroblastoma. - Answers - Leukemia
Explanation:
Early radiologists manifested a significant increase in skin malignancies and leukemias.
Scatter radiation could be as high as 500 millirads per hour at how far from the patient.
6 inches
1 foot
3 feet
6 feet - Answers - 1 foot
Explanation:
At 1 foot from the patient typical exposure can be as high as 500
How thick (in lead equivalent) must protective curtains be?
0.25 mm
0.5 mm
2.0 mm
5 mm - Answers - 0.25 mm
Explanation:
Protective curtains must be at least 0.25 mm lead equivalent and should be positioned
between the patient and the fluoroscopist.
Too much lighting during a fluoroscopy exam:
a) Helps to see images better
b) Improves visualization of television images
c) May increase fluoroscopy time
