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ARRT CT REGISTRY QUESTIONS And Answers 100% Solved
Which factor(s) has no measurable effect on the spatial resolution?
A 1. kVp
2.Focal spot size
The following factors affect the spatial 3.Detector sampling frequency
resolution of a CT image: focal spot size, 4. Matrix size
detector size, spacing, field of view, pixel
dimension, matrix size, and detector a. 1 only
sampling rate. The kVp does not have an b. 2 only
effect on spatial resolution. c. 1 and 2 only
d. 3 and 4 only
1. The internal and external jugular veins empty into the:
a.subclavian veins.
A b. superior vena cava.
c. brachiocephalic veins.
d. vertebral veins.
1. The arrow on the image below points to the:
a.rectus abdominis.
C. b. psoas.
c. pectoralis minor.
d. pectoralis major.
1._______________Modern multidetector CT scanners can discriminate
objects with density differences of or less.
a.0.10%
B
b. 0.50%
c. 1%
d. 1.50%
1/12
, 1. The large opening on the inferior aspect of the occipital bone through which
the spinal cord descends from the skull is the:
a.foramen magnum.
A
b. foramen ovale.
c. foramen spinosum.
d. foramen rotundum.
1. Which of the following is true of retrospective ECG gating?
a.It results in a lower radiation dose than prospective gating.
C b. It uses a sequential (axial) scan mode.
c. It acquires data during the entire heart cycle.
d. It depicts the heart as motionless.
1. Pixel size is equal to:
a.Slice thickness divided by matrix size.
C b. Matrix size divided by slice thickness.
c. field of view divided by matrix size.
d. matrix size divided by field of view.
1. For routine AP CT, the scan range begins above the dome of the liver and
extends through the:
a.iliac crests.
C
b. anterior superior iliac spines.
c. pubic symphysis.
d. ischial tuberosities.
1. A high-spatial-frequency algorithm is generally applied to a chest exam to display:
a.mediastinal structures.
C b. soft tissue.
c. air-filled spaces.
lung vasculature.
1. Which of the following is considered a mild reaction to contrast media?
a. Hoarseness
D b. Hypertensive urgency
c. Itching
d. Nasal congestion
1.__________________________________________Adjusting the window width changes the of
an image.
B a. brightness
b. contrast
c. density
d. resolution
1. The arrow on the image below points to the:
a. spleen.
C b. stomach.
c. pancreas.
d. gallbladder.
1. A ring artifact usually results from:
a.missing data from a detector element.
A b. beam hardening.
c. insufficient projection data.
d. increased pitch.
2/12
ARRT CT REGISTRY QUESTIONS And Answers 100% Solved
Which factor(s) has no measurable effect on the spatial resolution?
A 1. kVp
2.Focal spot size
The following factors affect the spatial 3.Detector sampling frequency
resolution of a CT image: focal spot size, 4. Matrix size
detector size, spacing, field of view, pixel
dimension, matrix size, and detector a. 1 only
sampling rate. The kVp does not have an b. 2 only
effect on spatial resolution. c. 1 and 2 only
d. 3 and 4 only
1. The internal and external jugular veins empty into the:
a.subclavian veins.
A b. superior vena cava.
c. brachiocephalic veins.
d. vertebral veins.
1. The arrow on the image below points to the:
a.rectus abdominis.
C. b. psoas.
c. pectoralis minor.
d. pectoralis major.
1._______________Modern multidetector CT scanners can discriminate
objects with density differences of or less.
a.0.10%
B
b. 0.50%
c. 1%
d. 1.50%
1/12
, 1. The large opening on the inferior aspect of the occipital bone through which
the spinal cord descends from the skull is the:
a.foramen magnum.
A
b. foramen ovale.
c. foramen spinosum.
d. foramen rotundum.
1. Which of the following is true of retrospective ECG gating?
a.It results in a lower radiation dose than prospective gating.
C b. It uses a sequential (axial) scan mode.
c. It acquires data during the entire heart cycle.
d. It depicts the heart as motionless.
1. Pixel size is equal to:
a.Slice thickness divided by matrix size.
C b. Matrix size divided by slice thickness.
c. field of view divided by matrix size.
d. matrix size divided by field of view.
1. For routine AP CT, the scan range begins above the dome of the liver and
extends through the:
a.iliac crests.
C
b. anterior superior iliac spines.
c. pubic symphysis.
d. ischial tuberosities.
1. A high-spatial-frequency algorithm is generally applied to a chest exam to display:
a.mediastinal structures.
C b. soft tissue.
c. air-filled spaces.
lung vasculature.
1. Which of the following is considered a mild reaction to contrast media?
a. Hoarseness
D b. Hypertensive urgency
c. Itching
d. Nasal congestion
1.__________________________________________Adjusting the window width changes the of
an image.
B a. brightness
b. contrast
c. density
d. resolution
1. The arrow on the image below points to the:
a. spleen.
C b. stomach.
c. pancreas.
d. gallbladder.
1. A ring artifact usually results from:
a.missing data from a detector element.
A b. beam hardening.
c. insufficient projection data.
d. increased pitch.
2/12
