FLUOROSCOPY SCRIPT TESTED
QUESTIONS WITH ANSWERS
◉ 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. Answer: 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. Answer: 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? Answer: 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. Answer: 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: Answer: 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.
◉ What documentation is necessary in order to expose human
beings to X-rays for diagnostic purposes? Answer: 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?
Answer: 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. Answer: 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.
QUESTIONS WITH ANSWERS
◉ 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. Answer: 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. Answer: 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? Answer: 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. Answer: 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: Answer: 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.
◉ What documentation is necessary in order to expose human
beings to X-rays for diagnostic purposes? Answer: 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?
Answer: 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. Answer: 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.
