FLUOROSCOPY EXAM QUESTIONS
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1. Which camera type has the greatest vidcom
lag?
2. This personnel monitoring device c) Pocket chamber, and.
discharges a capacitor by the ioniza- d) Pocket ionization chamber.
tion of air when in the presence of
radiation: Explanation:
Pocket ionization chambers discharge a capacitor by
a) Audible warning device. ionization of air within a chamber when in the pres-
ence of ionizing radiation. The self-reading versions
b) Thermoluminescent Dosimeter. allow immediate reading of radiation exposure by
the operator.
c) Pocket chamber.
d) Pocket ionization chamber.
3. The following may cause long-term Prior high-dose exposure, and.
effects from radiation exposure: Chronic low-dose exposure over years.
a) Prior low-dose exposure (<25 Explanation:
rads). Long-term effects may result from high-dose expo-
sures or chronic low-dose exposures. Exposure to
b) Prior high-dose exposure. 25 rads or less of radiation is not thought to cause
injury.
c) Chronic low-dose exposure over
years.
4. In California, how frequently must Weekly
tube potential k.V.p. and current m.A.
must be monitored?
5. This area is defined as one in which High Radiation Area
an individual could receive a dose
Explanation: A "high radiation area" is one in which
, FLUOROSCOPY EXAM QUESTIONS
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equivalent greater than 1 m.S.v. in 1 there exists radiation levels that could result in an
hour. individual receiving a dose equivalent in excess of 1
m.S.v. in 1 hour at 30 cm from the radiation source.
6. If you decrease the target-to-panel Increase.,
distance for patients, Patients dose Explanation: The target is the origin of the x-ray
is: 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 increas-
es the patient dose.
7. What documentation is necessary in I. Technologist fluoroscopy permit.
order to expose human beings to II. Supervisor and Operator radiology certificate.
X-rays for diagnostic purposes? III. Supervisor and Operator fluoroscopy permit.
Explanation: Only persons who possess proper,
valid, and up-to-date Supervisor and Operator Ra-
diology certificates, Supervisor and Operator Fluo-
roscopy permits or Technologists Fluoroscopy per-
mits issued by the State.
8. How many horizontal lines do televi- 525 lines
sion monitors typically have?
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.
9. Which of the following diseases was Leukemia
seen in early radiologists?
Explanation:
Kidney cancer. Early radiologists manifested a significant increase
in skin malignancies and leukemias.
, FLUOROSCOPY EXAM QUESTIONS
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Leukemia.
Osteosarcoma.
Neuroblastoma.
10. Scatter radiation could be as high 1 foot
as 500 millirads per hour at how far
from the patient. Explanation:
At 1 foot from the patient typical exposure can be as
6 inches high as 500
1 foot
3 feet
6 feet
11. How thick (in lead equivalent) must 0.25 mm
protective curtains be?
Explanation:
0.25 mm Protective curtains must be at least 0.25 mm lead
equivalent and should be positioned between the
0.5 mm patient and the fluoroscopist.
2.0 mm
5 mm
12. According to the National Council on 10 to 14 days
Radiation Protection and Measure-
ments (NCRP), how many days after Explanation:
the onset of menses is it safest to According to the N.C.R.P. , 10 to 14 days after the
perform x-rays? onset of menses it is improbable that a woman
, FLUOROSCOPY EXAM QUESTIONS
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would be pregnant and so this is the safest time to
Greater than 2 weeks perform x-ray examinations.
10-14 days
0-5 days
6-9 days
13. The smallest element of a digital im- Pixel.
age is known as a:
Explanation:
Matrix The smallest element of a digital image is a pixel.
A two-dimensional array of pixels is known as a
Pixel matrix. Binary is a way of encoding values using only
0 and 1, whereas decimals use 0 through 9.
Decimal
Binary
Explanation:
The smallest element of a digital im-
age is a pixel. A two-dimensional ar-
ray 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.
14. At what height above the tabletop All heights
should an unexposed border on the
fluoroscopic screen be visible when Explanation:
automatic collimating devices are An unexposed border must be visible when the
used? screen carriage is positioned 14 inches above the
tabletop and collimators are fully opened and at
Study online at https://quizlet.com/_co0ypb
1. Which camera type has the greatest vidcom
lag?
2. This personnel monitoring device c) Pocket chamber, and.
discharges a capacitor by the ioniza- d) Pocket ionization chamber.
tion of air when in the presence of
radiation: Explanation:
Pocket ionization chambers discharge a capacitor by
a) Audible warning device. ionization of air within a chamber when in the pres-
ence of ionizing radiation. The self-reading versions
b) Thermoluminescent Dosimeter. allow immediate reading of radiation exposure by
the operator.
c) Pocket chamber.
d) Pocket ionization chamber.
3. The following may cause long-term Prior high-dose exposure, and.
effects from radiation exposure: Chronic low-dose exposure over years.
a) Prior low-dose exposure (<25 Explanation:
rads). Long-term effects may result from high-dose expo-
sures or chronic low-dose exposures. Exposure to
b) Prior high-dose exposure. 25 rads or less of radiation is not thought to cause
injury.
c) Chronic low-dose exposure over
years.
4. In California, how frequently must Weekly
tube potential k.V.p. and current m.A.
must be monitored?
5. This area is defined as one in which High Radiation Area
an individual could receive a dose
Explanation: A "high radiation area" is one in which
, FLUOROSCOPY EXAM QUESTIONS
Study online at https://quizlet.com/_co0ypb
equivalent greater than 1 m.S.v. in 1 there exists radiation levels that could result in an
hour. individual receiving a dose equivalent in excess of 1
m.S.v. in 1 hour at 30 cm from the radiation source.
6. If you decrease the target-to-panel Increase.,
distance for patients, Patients dose Explanation: The target is the origin of the x-ray
is: 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 increas-
es the patient dose.
7. What documentation is necessary in I. Technologist fluoroscopy permit.
order to expose human beings to II. Supervisor and Operator radiology certificate.
X-rays for diagnostic purposes? III. Supervisor and Operator fluoroscopy permit.
Explanation: Only persons who possess proper,
valid, and up-to-date Supervisor and Operator Ra-
diology certificates, Supervisor and Operator Fluo-
roscopy permits or Technologists Fluoroscopy per-
mits issued by the State.
8. How many horizontal lines do televi- 525 lines
sion monitors typically have?
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.
9. Which of the following diseases was Leukemia
seen in early radiologists?
Explanation:
Kidney cancer. Early radiologists manifested a significant increase
in skin malignancies and leukemias.
, FLUOROSCOPY EXAM QUESTIONS
Study online at https://quizlet.com/_co0ypb
Leukemia.
Osteosarcoma.
Neuroblastoma.
10. Scatter radiation could be as high 1 foot
as 500 millirads per hour at how far
from the patient. Explanation:
At 1 foot from the patient typical exposure can be as
6 inches high as 500
1 foot
3 feet
6 feet
11. How thick (in lead equivalent) must 0.25 mm
protective curtains be?
Explanation:
0.25 mm Protective curtains must be at least 0.25 mm lead
equivalent and should be positioned between the
0.5 mm patient and the fluoroscopist.
2.0 mm
5 mm
12. According to the National Council on 10 to 14 days
Radiation Protection and Measure-
ments (NCRP), how many days after Explanation:
the onset of menses is it safest to According to the N.C.R.P. , 10 to 14 days after the
perform x-rays? onset of menses it is improbable that a woman
, FLUOROSCOPY EXAM QUESTIONS
Study online at https://quizlet.com/_co0ypb
would be pregnant and so this is the safest time to
Greater than 2 weeks perform x-ray examinations.
10-14 days
0-5 days
6-9 days
13. The smallest element of a digital im- Pixel.
age is known as a:
Explanation:
Matrix The smallest element of a digital image is a pixel.
A two-dimensional array of pixels is known as a
Pixel matrix. Binary is a way of encoding values using only
0 and 1, whereas decimals use 0 through 9.
Decimal
Binary
Explanation:
The smallest element of a digital im-
age is a pixel. A two-dimensional ar-
ray 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.
14. At what height above the tabletop All heights
should an unexposed border on the
fluoroscopic screen be visible when Explanation:
automatic collimating devices are An unexposed border must be visible when the
used? screen carriage is positioned 14 inches above the
tabletop and collimators are fully opened and at
