Radiology Questions
Explore questions in the Radiology category that you can ask Spark.E!
The dose rate at the table top during fluoroscopy cannot exceed _______ R per minute.A. 2B. 5C. 7D. 10
what is the unit for air kerma 1. brem 2. collision kerma3. roentgen 4. gray
How will beam filtration effect the primary beam?A. Make it more homogeneousB. Make it more heterogeneousC. Make it less penetratingD. Reduce its quality
to prevent leakage radiation from exposing the patient, an x-ray tube needs how much protective lead 1. 1.5 mm 2. 2.5 mm3. 3.5 mm4. 4.5 mm
According to 21 CFR, which of the following is/are true concerning fluoroscopic equipment manufactured after June 10, 2006?A. Air kerma rate (AKR) must be updated every 1 secondB. Cumulative air kerma must be updated every 5 secondsC. Irradiation time must be updated every 6 secondsD. All of the above
Which of the following types of beam restricting devices is considered the best at reducing patient exposure?A. ConeB. DiaphragmC. CollimatorD. Extension cylinder
Which of the following is NOT an important factor when attempting to reduce patient exposure?A. Use highest possible mAsB. Use close collimationC. Use gonadal shieldingD. Use well calibrated equipment
which of the following types of equipment has a great effect on reducing population exposure 1. fluoroscopic devices2. tomographic machines 3. automatic exposure controls (AEC) 4. computerized tomography equipment
Which of the following could result from excessive radiation exposure to a fetus during the first trimester?1. Prenatal death2. Neonatal death3. Congenital abnormalities4. All of the above
Which of the following are reasons for using beam restricting devices?1. Reduce scatter radiation2. Reduce patient exposure3. Improve image contrast4. All of the above
X rays that are not in the primary beam are called
which of the following methods is used to determine if an x-ray tube has adequate filtration 1. read tube specifications 2. physical examination of the tube 3. visual inspection of the tube 4. half-value layer (HVL) measurement
the source to skin distance for stationary fluoroscopy must not be less than 1. 5"2. 15"3. 20"4. 40"
which test is test the accepted method for determining beam filtration
What is the effective dose limit a radiography student may receive in one year if he/she is under 18 years old?A. 1 mSv (.1 rem)B. 5 mSv (.5 rem)C. 10 mSv (1 rem)D. 50 mSv (5 rem)
Which of the following is the best protection from radiation?A. DistanceB. Lead glassC. Lead shieldD. Lead apron
Radiation that leaves the tube housing by any means other than through the window is called what?A. PrimaryB. ScatterC. LeakageD. Remnant (exit)
Leakage radiation from the x-ray tube cannot exceed which of the following at a distance of one meter?A. 6.45 x 10-6 Coulomb/kg/hr (25 mR/hr)B. 1.29 x 10-5 Coulomb/kg/hr (50 mR/hr)C. 1.94 x 10-5 Coulomb/kg/hr (75 mR/hr)D. 2.58 x 10-5 Coulomb/kg/hr (100 mR/hr)
Which of the following is a primary factor in protecting radiographers from scatter radiation?A. Increase kVpB. Reduce focal spot sizeC. Use some type of lead shieldingD. Reduce screen speed
Radiation that changes direction as it passes through a material is called what?A. SecondaryB. ScatterC. LeakageD. Remnant (exit)