CT Mosby's Simulated Exam 1
Questions with Accurate Answers
106. Which number on the figure corresponds to the anterior horn
of the lateral ventricle?
a. 1
b. 5
c. 3
d. 2 correct answer b. 5
A 16-slice MDCT system utilizes an adaptive array of 24
detectors, each ranging in size from 0.625 to 1.25 mm. What is the
maximum number of sections the system can acquire with each
rotation of the gantry?
a. 8
b. 16
c. 32
d. 64 correct answer b. 16
A common site for the IV administration of iodinated contrast
media is the anterior recess of the elbow, otherwise known as the:
a. brachial fossa
b. olecranon fossa
c. retroulnar space
d. antecubital space correct answer d. antecubital space
,A complete CT study of the orbits should include:
a. Thick section (5-10 mm) axial images only
b. Thick section (5-10 mm) axial and coronal images
c. Thin section (1-3 mm) coronal sections only
d. Thin section (1-3 mm) axial and coronal sections correct answer d. Thin section
(1-3 mm) axial and coronal sections
A CT image is displayed in a window with a level of 0 and a
width of 500. Which of the following statements is correct?
a. Pixels with values between 0 HU and 500 HU will appear
white.
b. Pixels with values between −250 HU and +250 HU will be
assigned shades of gray.
c. Pixels with values greater than +500 HU will be black.
d. Pixels with values less than 0 HU will appear white. correct answer b. Pixels
with values between −250 HU and +250 HU will be
assigned shades of gray.
A CT image is formed in part by projecting back all of the
attenuation values recorded during data acquisition onto a:
a. pixel
b. voxel
c. matrix
d. reformat correct answer c. matrix
,A decrease in the focus-to-detector distance of a multidetector
CT (MDCT) system would result in:
a. increased patient dose
b. decreased patient dose
c. magnification of the image
d. loss of contrast resolution correct answer a. increased patient dose
A first-generation CT scanner consists of an x-ray tube and two
detectors that translate across the patient's head while rotating in
1-degree increments for a total of:
a. 45 degrees
b. 90 degrees
c. 180 degrees
d. 360 degrees correct answer c. 180 degrees
A modern CT system may employ complex collimation along
the z-axis to reduce patient radiation exposure due to:
a. binning
b. beam hardening
c. overbeaming
d. interpolation correct answer c. overbeaming
A normal range for diastolic blood pressure in an adult is:
, a. 40-60 mm Hg
b. 60-90 mm Hg
c. 80-120 mm Hg
d. 95-140 mm Hg correct answer b. 60-90 mm Hg
A patient in shock may exhibit which of the following symptoms?
1. tachycardia
2. rapid, shallow breathing
3. cyanosis
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3 correct answer d. 1, 2, and 3
A patient who appears drowsy but can be aroused is said to be:
a. comatose
b. lethargic
c. obtunded
d. semicomatose correct answer b. lethargic
A standard CT image reconstructed on a 5122 matrix has a
digital size of approximately:
a. 0.5 MB
b. 3.0 MB
Questions with Accurate Answers
106. Which number on the figure corresponds to the anterior horn
of the lateral ventricle?
a. 1
b. 5
c. 3
d. 2 correct answer b. 5
A 16-slice MDCT system utilizes an adaptive array of 24
detectors, each ranging in size from 0.625 to 1.25 mm. What is the
maximum number of sections the system can acquire with each
rotation of the gantry?
a. 8
b. 16
c. 32
d. 64 correct answer b. 16
A common site for the IV administration of iodinated contrast
media is the anterior recess of the elbow, otherwise known as the:
a. brachial fossa
b. olecranon fossa
c. retroulnar space
d. antecubital space correct answer d. antecubital space
,A complete CT study of the orbits should include:
a. Thick section (5-10 mm) axial images only
b. Thick section (5-10 mm) axial and coronal images
c. Thin section (1-3 mm) coronal sections only
d. Thin section (1-3 mm) axial and coronal sections correct answer d. Thin section
(1-3 mm) axial and coronal sections
A CT image is displayed in a window with a level of 0 and a
width of 500. Which of the following statements is correct?
a. Pixels with values between 0 HU and 500 HU will appear
white.
b. Pixels with values between −250 HU and +250 HU will be
assigned shades of gray.
c. Pixels with values greater than +500 HU will be black.
d. Pixels with values less than 0 HU will appear white. correct answer b. Pixels
with values between −250 HU and +250 HU will be
assigned shades of gray.
A CT image is formed in part by projecting back all of the
attenuation values recorded during data acquisition onto a:
a. pixel
b. voxel
c. matrix
d. reformat correct answer c. matrix
,A decrease in the focus-to-detector distance of a multidetector
CT (MDCT) system would result in:
a. increased patient dose
b. decreased patient dose
c. magnification of the image
d. loss of contrast resolution correct answer a. increased patient dose
A first-generation CT scanner consists of an x-ray tube and two
detectors that translate across the patient's head while rotating in
1-degree increments for a total of:
a. 45 degrees
b. 90 degrees
c. 180 degrees
d. 360 degrees correct answer c. 180 degrees
A modern CT system may employ complex collimation along
the z-axis to reduce patient radiation exposure due to:
a. binning
b. beam hardening
c. overbeaming
d. interpolation correct answer c. overbeaming
A normal range for diastolic blood pressure in an adult is:
, a. 40-60 mm Hg
b. 60-90 mm Hg
c. 80-120 mm Hg
d. 95-140 mm Hg correct answer b. 60-90 mm Hg
A patient in shock may exhibit which of the following symptoms?
1. tachycardia
2. rapid, shallow breathing
3. cyanosis
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3 correct answer d. 1, 2, and 3
A patient who appears drowsy but can be aroused is said to be:
a. comatose
b. lethargic
c. obtunded
d. semicomatose correct answer b. lethargic
A standard CT image reconstructed on a 5122 matrix has a
digital size of approximately:
a. 0.5 MB
b. 3.0 MB
