ARRT mock registry rad review

ARRT mock registry rad review
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 - Answerc

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 - Answerc

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 - Answerc

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 - Answerc

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 - Answerd

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 - Answerd

:
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 - Answera

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 - Answerb

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 -
Answerb, 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 - Answera

Which of the following is correct regarding the relationship between pixel size, pixel
pitch, and spatial resolution?
A
As pixel size decreases, pixel pitch increases, and spatial resolution increases
B
As pixel size decreases, pixel pitch decreases, and spatial resolution increases
C
As pixel size increases, pixel pitch increases, and spatial resolution increases
D
As pixel size increases, pixel pitch decreases, and spatial resolution decreases -
Answerb

A patient arrives at the emergency room by ambulance with a possible left humeral
fracture. Due to the patient's condition, a transthoracic lateral projection will be
performed to assess the proximal humerus. Which of the following is the correct position
of the patient's left arm?
A
Left arm in a neutral position
B
Left arm in an internal rotation
C
Left arm in an external rotation

, D
Left arm is elevated above the patient's head - Answera

Which of the following is responsible for correcting the brightness and contrast of an
image, regardless of the technique used?
A
Rescaling
B
Smoothing
C
Edge Enhancement
D
Quantization - Answera

Which of the following is/are considered long-term somatic effect(s) of radiation
exposure?
1. Carcinogenesis
2. Nausea, vomiting, and diarrhea
3. Cataractogenesis
A
1 only
B
1, 2, and 3
C
1 and 3 only
D
2 only - Answerc

Which of the following digital imaging post-processing functions provides quantitative
information of the pixels in a defined area?
A
Region of interest
B
Values of interest
C
Dynamic range
D
Window level - Answera

Which of the following cells do not undergo cell division, are mature bone cells, and
maintain the metabolism of bone tissue?
A
Osteoblasts
B
Chondroblasts
C