ARRT Mock Registry Review Top latest complete solution.

An increase in technical factors is likely to be required for the following condition(s) 1. Emphysema 2. Atelectasis 3. Ascites A 1 only B 1 and 2 only C 2 and 3 only D 1, 2, and 3 - c Which of the following help(s) to reduce patient dose? 1. Tube filtration 2. Proper beam alignment 3. Operator shield 4. Automatic Exposure Control (AEC) A 1 and 2 only B 2 and 3 only C 1, 2, and 4 only D 1, 3, and 4 only - c Which of the following is used to express the effectiveness of a detector to absorb x-ray photons? A FPD B PPI C DQE D DXA - c Which of the following are true regarding bone marrow dose? 1. Bone marrow dose can be directly measured 2. It is relevant for measurement due to the association between bone marrow and radiation-induced leukemia 3. Bone marrow dose is estimated utilizing the ESE 4. The mean marrow dose is typically lower in children A 2 and 4 only B 1 and 4 only C 2, 3, and 4 only D 1, 2, and 4 only - c All of the following statements regarding SNR are true, except A SNR is directly related to image quality B SNR is directly related to patient dose C Insufficient SNR results in quantum noise D Excessive SNR is associated with underexposure - d Which of the following is an SI quantity that can be used for radiation concentration transferred to a point that may be at the surface of a patient's or radiographer's body? A Absorbed dose B Dose equivalent C Effect dose D Air kerma - d : If a structure having less tissue density than the part of interest is positioned over the AEC detector, which of the following will result? A Underexposure B Overexposure C Distorted image D Correct exposure - a When irradiated in an oxygenated (aerobic) state, biologic tissue _______________to radiation compared to when it is exposed to radiation under anoxic or hypoxic conditions. A Is less sensitive B Is more sensitive C Has the same sensitivity D Becomes more immune - b Select the three correct statements below regarding fixed vs. variable kV technique charts A mAs is variable when using a variable kV chart B the fixed kV chart is most commonly used C each body part has a specific kV when using a variable kV chart D kV is increased by 2 for each cm increase in thickness when using a variable kV chart E accurate caliper measurement is required when using a variable kV chart F mAs compensates for patient size and condition variation in a variable kV chart - b, d, e The energy of the incident photon is completely absorbed during which of the following x-ray interactions with matter? A Photoelectric absorption B Bremsstrahlung C Compton interaction D Coherent scattering - a